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*\/\n.un-popular-wrap{background:transparent}.un-popular-kicker{display:flex;align-items:center;gap:8px;margin-bottom:10px;color:#142b43;font-size:9px;font-weight:900;text-transform:uppercase;letter-spacing:.06em}.un-popular-kicker:before{content:'\u2726';width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#e6f0ff;color:var(--blue);font-size:9px}.un-popular-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.un-popular{position:relative;min-height:116px;padding:13px 13px 12px 38px;border-radius:6px;border-color:#d7e0e9;box-shadow:none}.un-popular:hover,.un-popular:focus-visible{transform:none;border-color:#7fa2ff;box-shadow:0 6px 18px rgba(23,54,91,.08)}.un-popular-no{position:absolute;left:12px;top:13px;width:18px;height:18px;display:grid;place-items:center;border-radius:50%;background:#e8f1ff;color:#1d5dff;font-size:8px;font-weight:900}.un-popular small{font-size:7.6px;letter-spacing:.035em}.un-popular h3{font-size:10.5px;line-height:1.34;margin:5px 0 7px}.un-popular p{display:none}.un-popular-action{display:inline-flex;align-items:center;gap:4px;color:#1766dc;font-size:8.5px;font-weight:800}.un-popular-action:after{content:'\u2192'}\n\/* Search \u2014 a normal-flow block, never overlays the sidebar *\/\n.un-search-panel{position:relative;z-index:1;margin:0 0 18px;padding:12px;background:#fff;border:1px solid #d7e1ea;border-radius:8px;box-shadow:0 5px 18px rgba(18,47,76,.06)}.un-search-panel-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin:0 2px 9px}.un-search-panel-head h2{margin:0;color:#142b43;font-size:14px}.un-search-panel-head p{max-width:620px;margin:0;color:#768697;font-size:9.5px;line-height:1.45}.un-searchbox{position:static;max-width:none;margin:0}.un-searchform{border:1px solid #bfcfe0;border-radius:6px;box-shadow:none;padding:5px 5px 5px 12px;backdrop-filter:none}.un-searchform svg{width:15px;color:#9aa7b3}.un-searchform 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*\/\n.un-explorer{padding:0;background:transparent;border:0;border-radius:0;box-shadow:none;display:grid;gap:8px}.un-cat{border:0;margin:0}.un-cat>summary{grid-template-columns:32px minmax(0,1fr) auto 28px;gap:10px;padding:11px 13px;background:var(--navy);border-radius:6px;color:#fff;box-shadow:0 3px 10px rgba(7,31,54,.07)}.un-cat>summary:hover{background:#103a61}.un-cat[open]>summary{background:var(--navy);border-radius:6px 6px 0 0}.un-cat-no{width:27px;height:27px;border-radius:5px;background:rgba(255,255,255,.08);box-shadow:inset 0 -2px 0 #2f88d8;font-size:8px}.un-cat-main strong{color:#fff;font-size:12px}.un-cat-main span{display:none}.un-cat-topic-count{color:#b8cee1;background:transparent;padding:0;font-size:8px}.un-cat-chevron{width:24px;height:24px;background:rgba(255,255,255,.12);color:#fff;font-size:14px}.un-cat[open] .un-cat-chevron{transform:rotate(45deg)}\n.un-cat-body{padding:13px 13px 15px;background:#fff;border:1px solid #d8e2ec;border-top:0;border-radius:0 0 7px 7px}.un-cat-intro{padding:0 2px 11px}.un-cat-intro p{font-size:10px;color:#677889;line-height:1.5}.un-topic-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.un-topic-group{padding:9px;background:#f7f9fb;border-color:#e7edf3;border-radius:7px}.un-topic-group h3{font-size:7.5px;margin:1px 3px 6px;color:#7f91a2}.un-topic-grid{gap:4px}.un-topic-link{padding:7px 8px;border-radius:5px;font-size:9.4px;border-color:#e2e8ee}.un-topic-link:hover,.un-topic-link:focus-visible,.un-topic-link.active{background:#edf5ff;border-color:#9dbaff;color:#124ec0}.un-topic-link .un-count{font-size:7px}.un-topic-link .arrow{font-size:10px}.un-inline-host{margin-top:10px}.un-inline-panel{border-radius:7px;border-color:#cfdbe7;box-shadow:0 10px 28px rgba(14,41,69,.08)}.un-inline-head{padding:11px 12px;background:#f2f7fc}.un-inline-head h3{font-size:12px}.un-inline-head small{font-size:7px}.un-inline-head button{width:25px;height:25px;font-size:15px}\n.un-inline-list .un-faq>summary{font-size:10.8px;padding-top:11px;padding-bottom:11px}.un-inline-list .un-answer p{font-size:10.8px;line-height:1.62}\n\/* CTA block *\/\n.un-cta{position:relative;overflow:hidden;margin-top:28px;padding:30px 34px;background:linear-gradient(115deg,#050505 0%,#101010 58%,#18110d 100%);color:#fff;border-radius:7px;box-shadow:0 15px 35px rgba(7,38,65,.18)}.un-cta:before,.un-cta:after{content:'';position:absolute;pointer-events:none}.un-cta:before{inset:-80px -20px auto auto;width:340px;height:220px;background:repeating-linear-gradient(135deg,rgba(225,108,10,.10) 0 1px,transparent 1px 30px);transform:rotate(-8deg)}.un-cta:after{right:54px;bottom:-70px;width:160px;height:160px;border:1px solid rgba(225,108,10,.28);border-radius:50%;box-shadow:0 0 0 30px rgba(225,108,10,.03),0 0 0 60px rgba(101,6,17,.035)}.un-cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:20px}.un-cta-icon{width:52px;height:52px;display:grid;place-items:center;border:1px solid #e16c0a;border-radius:50%;color:#e16c0a}.un-cta-icon svg{width:24px}.un-cta-kicker{color:#e16c0a;font-size:8px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.un-cta h2{margin:4px 0 6px;color:#fff;font-size:20px;letter-spacing:-.02em}.un-cta p{max-width:620px;margin:0;color:#d7e3ec;font-size:10.5px;line-height:1.6}.un-cta-button{position:relative;z-index:2;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;text-decoration:none;background:#650611;color:#fff;border-radius:5px;padding:11px 15px;font-size:10px;font-weight:850;box-shadow:0 6px 16px rgba(101,6,17,.28)}.un-cta-button:hover,.un-cta-button:focus-visible{background:#82101d;outline:3px solid rgba(225,108,10,.20)}.un-cta-button:after{content:'\u2192'}\n\/* Static pillar FAQ pages *\/\n.un-pillar-note{border-radius:7px}.un-topic{border-radius:7px}.un-topic>summary{padding:12px 14px}.un-topic-title{font-size:11.5px}.un-faq>summary{font-size:11px}.un-answer p{font-size:11px}\n@media(max-width:1080px){.un-layout{grid-template-columns:235px minmax(0,1fr);gap:20px}.un-popular-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.un-topic-groups{grid-template-columns:1fr}}\n@media(max-width:900px){.un-layout{grid-template-columns:1fr}.un-sidebar{position:relative;top:auto;max-height:430px}.un-search-panel{z-index:1}.un-popular-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}\n@media(max-width:650px){.un-hero{min-height:430px}.un-hero-in{padding:46px 16px 38px}.un-layout{padding:20px 14px 48px}.un-popular-grid{grid-template-columns:1fr}.un-search-panel-head{display:block}.un-search-panel-head p{margin-top:4px}.un-searchform{grid-template-columns:1fr}.un-searchform svg{display:none}.un-searchform button{width:100%}.un-cat>summary{grid-template-columns:28px minmax(0,1fr) 25px}.un-cat-topic-count{display:none}.un-cat-body{padding:10px}.un-topic-groups{grid-template-columns:1fr}.un-cta{padding:24px 20px}.un-cta-inner{grid-template-columns:46px 1fr}.un-cta-icon{width:44px;height:44px}.un-cta-button{grid-column:1\/-1;justify-self:start}.un-cta h2{font-size:18px}}\n\n\n\/* ============================================================\n   V6 \u2014 UNIT N black system + architectural motion + logo FAQs\n   Palette sampled from the supplied UNIT N colour reference:\n   blue #1c5d8c, sky #6f9ec2, wine #650611, orange #e16c0a.\n   ============================================================ *\/\n:root{\n  --navy:#050505;--navy2:#111111;--navy3:#000000;\n  --unit-black:#050505;--unit-charcoal:#151515;\n  --accent-blue:#1c5d8c;--accent-sky:#6f9ec2;\n  --accent-wine:#650611;--accent-orange:#e16c0a;\n  --accent-deep:#181d38;\n}\nbody{background:#f3f3f2}\n.un-shell{position:relative;isolation:isolate;overflow:clip}\n\/* A subtle construction\/renovation blueprint field that remains present as the visitor scrolls. *\/\n.un-shell::before{\n  content:\"\";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.95;\n  background-image:\n    linear-gradient(rgba(28,93,140,.035) 1px,transparent 1px),\n    linear-gradient(90deg,rgba(28,93,140,.035) 1px,transparent 1px),\n    repeating-linear-gradient(135deg,transparent 0 118px,rgba(225,108,10,.022) 118px 119px,transparent 119px 236px),\n    repeating-linear-gradient(45deg,transparent 0 168px,rgba(101,6,17,.018) 168px 169px,transparent 169px 338px);\n  background-size:78px 78px,78px 78px,360px 360px,520px 520px;\n  animation:unBlueprintDrift 34s linear infinite;\n}\n.un-shell::after{\n  content:\"\";position:fixed;top:-18vh;left:-32vw;width:24vw;height:136vh;z-index:0;pointer-events:none;\n  background:linear-gradient(90deg,transparent,rgba(111,158,194,.04),rgba(225,108,10,.022),rgba(101,6,17,.018),transparent);\n  border-left:1px dashed rgba(28,93,140,.08);border-right:1px dashed rgba(225,108,10,.055);\n  transform:skewX(-17deg);animation:unConstructionScan 18s ease-in-out infinite;\n}\n.un-hero,.un-layout,.un-crumbs{position:relative;z-index:1}\n@keyframes unBlueprintDrift{from{background-position:0 0,0 0,0 0,0 0}to{background-position:156px 78px,78px 156px,360px 180px,-260px 260px}}\n@keyframes unConstructionScan{0%,12%{transform:translateX(0) skewX(-17deg);opacity:0}24%{opacity:1}76%{opacity:1}88%,100%{transform:translateX(170vw) skewX(-17deg);opacity:0}}\n\n\/* Dark blue surfaces are now UNIT N black. *\/\n.un-side-head,.un-cat>summary,.un-cat[open]>summary{background:var(--unit-black)!important}\n.un-cat>summary:hover{background:var(--unit-charcoal)!important}\n.un-cat-no{background:#141414!important;box-shadow:inset 0 -2px 0 var(--accent-blue)!important}\n.un-cat-chevron{background:rgba(255,255,255,.11)!important;color:#fff!important}\n.un-cta{background:linear-gradient(115deg,#050505 0%,#101010 58%,#181818 100%)!important;box-shadow:0 15px 35px rgba(0,0,0,.18)!important}\n.un-cta:before{background:repeating-linear-gradient(135deg,rgba(111,158,194,.10) 0 1px,transparent 1px 30px),repeating-linear-gradient(45deg,rgba(225,108,10,.045) 0 1px,transparent 1px 56px)!important}\n.un-cta:after{border-color:rgba(111,158,194,.22)!important;box-shadow:0 0 0 30px rgba(225,108,10,.025),0 0 0 60px rgba(101,6,17,.022)!important}\n.un-top{background:#050505!important}.un-top:hover{background:#171717!important}\n\n\/* Use the supplied multicolour reference lightly in the hero construction drawing. *\/\n.un-grid{background-image:linear-gradient(rgba(28,93,140,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(28,93,140,.16) 1px,transparent 1px)!important}\n.un-motion .measure{stroke:rgba(111,158,194,.72)!important}\n.un-motion .build{stroke:rgba(225,108,10,.72)!important}\n.un-motion .scan{fill:rgba(101,6,17,.075)!important}\n.un-motion .node circle:nth-child(1){fill:#6f9ec2!important}.un-motion .node circle:nth-child(2){fill:#e16c0a!important}.un-motion .node circle:nth-child(3){fill:#9b1d2b!important}.un-motion .node circle:nth-child(4){fill:#1c5d8c!important}\n\n\/* The three hero stat brackets\/cards pick up one reference colour on hover. *\/\n.un-stat{position:relative;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease}\n.un-stat:nth-child(1){--stat-accent:#1c5d8c}.un-stat:nth-child(2){--stat-accent:#e16c0a}.un-stat:nth-child(3){--stat-accent:#650611}\n.un-stat:hover,.un-stat:focus-within{transform:translateY(-4px);border-color:var(--stat-accent);background:rgba(9,9,9,.72);box-shadow:0 14px 30px rgba(0,0,0,.24),inset 0 -3px 0 var(--stat-accent)}\n\n\/* Small, low-intensity palette cues on content cards. *\/\n.un-popular{--card-accent:#1c5d8c;border-top:2px solid color-mix(in srgb,var(--card-accent) 42%,transparent)}\n.un-popular:nth-child(3n+2){--card-accent:#e16c0a}.un-popular:nth-child(3n+3){--card-accent:#650611}\n.un-popular:hover,.un-popular:focus-visible{border-color:color-mix(in srgb,var(--card-accent) 48%,#d7e0e9);box-shadow:0 7px 20px rgba(18,18,18,.07)}\n.un-topic-group:nth-child(4n+1) h3{color:#1c5d8c}.un-topic-group:nth-child(4n+2) h3{color:#9a4b0d}.un-topic-group:nth-child(4n+3) h3{color:#650611}.un-topic-group:nth-child(4n+4) h3{color:#5b7890}\n\n\/* UNIT N logo icon + disclosure arrow form one compact left-hand control beside every FAQ question. *\/\n.un-faq>summary{\n  grid-template-columns:30px 15px minmax(0,1fr)!important;\n  align-items:center!important;column-gap:7px!important;row-gap:0!important;\n  padding-left:18px!important;\n}\n.un-faq>summary>span:empty{display:none!important}\n.un-faq>summary>[itemprop=\"name\"]{grid-column:3!important;grid-row:1!important;min-width:0}\n.un-faq>summary:before{\n  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background:#98adff!important;\n  color:#070b14!important;\n  outline:3px solid rgba(174,190,255,.30)!important;\n}\n\n\/* Softer main category bars: charcoal instead of hard black, off-white instead of pure white. *\/\n.un-explorer .un-cat>summary,\n.un-explorer .un-cat[open]>summary{background:#292929!important;color:#ecebe7!important}\n.un-explorer .un-cat>summary:hover{background:#323232!important}\n.un-explorer .un-cat-no{background:#3a3a3a!important;color:#ecebe7!important;box-shadow:inset 0 -2px 0 rgba(174,190,255,.72)!important}\n.un-explorer .un-cat-main strong{color:#f1f0ec!important}\n.un-explorer .un-cat-topic-count{color:#c8c7c2!important}\n.un-explorer .un-cat-chevron{background:rgba(255,255,255,.075)!important;color:#e1e0dc!important}\n.un-explorer .un-cat-body{background:#fbfaf7!important;border-color:#deddd8!important}\n.un-explorer .un-topic-group{background:#f4f3ef!important;border-color:#e6e4de!important}\n.un-explorer .un-topic-link{background:#fffefa!important;border-color:#e7e4dd!important;color:#383b40!important}\n\n\/* Removed helper copy leaves a clean single-row search heading. *\/\n.un-search-panel-head{align-items:center!important;margin-bottom:11px!important}\n.un-search-panel-head>div{min-width:0}\n\n@media(max-width:650px){\n  .un-search-panel-head h2{font-size:clamp(16.5px,4.8vw,21px)!important;white-space:nowrap!important;letter-spacing:-.015em!important}\n  .un-side-head{font-weight:600!important}\n  .un-side-cat>summary{font-weight:600!important}\n  .un-faq>summary,.un-faq>summary>[itemprop=\"name\"],.un-q-text{font-weight:500!important}\n}\n\n<\/style><style id=\"unitn-v2-host-integration\">.un-faq>summary>.un-q-text{grid-column:3;grid-row:1;min-width:0}@media(min-width:901px){.un-sidebar{top:116px;max-height:calc(100vh - 136px)}}.un-faq,.un-inline-panel{scroll-margin-top:116px}<\/style><div class=\"un-shell unitn-kc-brand\"><a class=\"un-skip\" href=\"#main\">Skip to content<\/a><section class=\"un-hero unitn-icon-surface\"><div aria-hidden=\"true\" class=\"un-hero-bg\"><\/div><div aria-hidden=\"true\" class=\"un-grid\"><\/div><span aria-hidden=\"true\" class=\"unitn-export-icon unitn-exported-product-hero\" data-unitn-icon=\"product-tile\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" class=\"unitn-icon-static\" src=\"https:\/\/i0.wp.com\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon.png?resize=1001%2C1001&#038;ssl=1\" width=\"1001\" height=\"1001\" alt=\"\" data-unitn-size=\"320\" srcset=\"https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-150x150.png?crop=1 150w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-300x300.png 300w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-768x768.png 768w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon.png 1001w\" sizes=\"320px\" decoding=\"async\" loading=\"eager\" \/><img data-recalc-dims=\"1\" class=\"unitn-icon-hover\" src=\"https:\/\/i0.wp.com\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-Hover.png?resize=1001%2C1001&#038;ssl=1\" width=\"1001\" height=\"1001\" alt=\"\" data-unitn-size=\"320\" srcset=\"https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-Hover-150x150.png?crop=1 150w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-Hover-300x300.png 300w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-Hover-768x768.png 768w, https:\/\/unitn.nl\/wp-content\/uploads\/2026\/10\/Unit-N-Tile-Icon-Hover.png 1001w\" sizes=\"auto, 320px\" decoding=\"async\" loading=\"lazy\" fetchpriority=\"low\" \/><\/span><div class=\"un-hero-in\"><div class=\"un-hero-copy\"><div class=\"un-eyebrow\">UNIT N \u00b7 Knowledge Center<\/div><h1>Bathroom preparation: technical decisions and details<\/h1><p>The technical decisions behind a bathroom shape how the design can be installed and maintained. This guide covers service positions, floor build-up, waterproofing, ventilation and checks before work is concealed. Use it to ask focused questions, with the responsible professionals assessing installation details and system suitability for your home.<\/p><div class=\"un-stats\"><div class=\"un-stat\"><b data-count=\"16\" data-locale=\"en\">16<\/b><span>Questions &amp; answers<\/span><\/div><div class=\"un-stat\"><b data-count=\"1\" data-locale=\"en\">1<\/b><span>Knowledge areas<\/span><\/div><div class=\"un-stat\"><b data-count=\"2\" data-locale=\"en\">2<\/b><span>Topics<\/span><\/div><\/div><\/div><\/div><\/section><div class=\"un-layout\"><aside class=\"un-sidebar\"><div class=\"un-side-head\"><svg fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" viewbox=\"0 0 24 24\"><path d=\"M4 6h16M4 12h16M4 18h10\"><\/path><\/svg>Categories<\/div><div class=\"un-side-filter\"><label class=\"un-sr\" for=\"un-side-filter-en\">Filter categories or topics&#8230;<\/label><input autocomplete=\"off\" data-side-filter=\"\" id=\"un-side-filter-en\" placeholder=\"Filter categories or topics...\" type=\"search\"\/><\/div><div class=\"un-side-group\" data-side-group=\"\"><details class=\"un-side-cat\" data-cat=\"bathroom-technical-decisions\" id=\"side-bathroom-technical-decisions\"><summary><span>Bathroom preparation: technical decisions and details<\/span><span class=\"un-side-topic-count\">2<\/span><\/summary><div class=\"un-side-body\"><a class=\"un-side-open\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/\">Open the guide \u2192<\/a><div class=\"un-side-group-label\">Brief &amp; preparation<\/div><a aria-expanded=\"false\" class=\"un-side-link\" data-inline-cat=\"bathroom-technical-decisions\" data-inline-topic=\"Technical starting points\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#technical-baseline\" type=\"button\"><span>Technical starting points<\/span><span class=\"un-count\">9<\/span><\/a><div class=\"un-side-group-label\">Delivery &amp; control<\/div><a aria-expanded=\"false\" class=\"un-side-link\" data-inline-cat=\"bathroom-technical-decisions\" data-inline-topic=\"Details for installation and use\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#installation-details\" type=\"button\"><span>Details for installation and use<\/span><span class=\"un-count\">7<\/span><\/a><\/div><\/details><\/div><\/aside><main class=\"un-main\" id=\"main\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/CollectionPage\"><section class=\"un-section un-popular-wrap\"><div class=\"un-popular-kicker\">Popular questions<\/div><div class=\"un-popular-grid\"><button class=\"un-popular\" data-inline-faq=\"faq-retained-layout\" type=\"button\"><span class=\"un-popular-no\">1<\/span><small>Technical starting points<\/small><h3>What should be checked before relocating bathroom fittings?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><button class=\"un-popular\" data-inline-faq=\"faq-floor-build-up\" type=\"button\"><span class=\"un-popular-no\">2<\/span><small>Technical starting points<\/small><h3>What information is needed to coordinate a bathroom floor build-up?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><button class=\"un-popular\" data-inline-faq=\"faq-waterproofing\" type=\"button\"><span class=\"un-popular-no\">3<\/span><small>Technical starting points<\/small><h3>What should be agreed about waterproofing behind bathroom tiles?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><button class=\"un-popular\" data-inline-faq=\"faq-ventilation\" type=\"button\"><span class=\"un-popular-no\">4<\/span><small>Technical starting points<\/small><h3>Which ventilation questions should be addressed for a new bathroom?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><button class=\"un-popular\" data-inline-faq=\"faq-tile-setout\" type=\"button\"><span class=\"un-popular-no\">5<\/span><small>Details for installation and use<\/small><h3>What should a bathroom tile layout specify?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><button class=\"un-popular\" data-inline-faq=\"faq-maintenance-access\" type=\"button\"><span class=\"un-popular-no\">6<\/span><small>Details for installation and use<\/small><h3>How should maintenance access be included in a bathroom design?<\/h3><span class=\"un-popular-action\">Show answer<\/span><\/button><\/div><\/section><section aria-labelledby=\"un-search-title\" class=\"un-search-panel\"><div class=\"un-search-panel-head\"><div><h2 id=\"un-search-title\">Ask the knowledge center<\/h2><\/div><\/div><div class=\"un-searchbox\"><form class=\"un-searchform\" id=\"un-search-form\" role=\"search\"><svg aria-hidden=\"true\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" viewbox=\"0 0 24 24\"><circle cx=\"11\" cy=\"11\" r=\"7\"><\/circle><path d=\"m20 20-4-4\"><\/path><\/svg><label class=\"un-sr\" for=\"un-search\">Ask the UNIT N knowledge center<\/label><input aria-autocomplete=\"list\" aria-controls=\"un-results\" autocomplete=\"off\" enterkeyhint=\"search\" id=\"un-search\" placeholder=\"For example: how do I determine the right layout before a renovation?\" type=\"search\"\/><button type=\"submit\">Find answer<\/button><\/form><div aria-live=\"polite\" class=\"un-search-meta\" data-results=\"matches\" id=\"un-search-meta\"><\/div><div aria-live=\"polite\" class=\"un-results\" data-best=\"Best match\" data-empty=\"No strong match found. Try phrasing the question differently.\" data-related=\"Related\" id=\"un-results\" role=\"listbox\"><\/div><\/div><\/section><section class=\"un-section\"><div class=\"un-section-head\"><div><h2>Categories &amp; topics<\/h2><\/div><\/div><div class=\"un-explorer\" data-cat-group=\"\" id=\"onderwerpen\"><details class=\"un-cat\" data-cat=\"bathroom-technical-decisions\" id=\"category-bathroom-technical-decisions\"><summary><span class=\"un-cat-no\">01<\/span><span class=\"un-cat-main\"><strong>Bathroom preparation: technical decisions and details<\/strong><span>Prepare bathroom details: service positions, floor build-up, waterproofing, ventilation, tile layout and checks before finishes conceal the installation.<\/span><\/span><span class=\"un-cat-topic-count\">2 topics<\/span><span class=\"un-cat-chevron\">+<\/span><\/summary><div class=\"un-cat-body\"><div class=\"un-cat-intro\"><p>Prepare bathroom details: service positions, floor build-up, waterproofing, ventilation, tile layout and checks before finishes conceal the installation.<\/p><a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/\">Open the guide \u2192<\/a><\/div><div class=\"un-topic-groups\"><section class=\"un-topic-group\"><h3>Brief &amp; preparation<\/h3><div class=\"un-topic-grid\"><a aria-expanded=\"false\" class=\"un-topic-link\" data-inline-cat=\"bathroom-technical-decisions\" data-inline-topic=\"Technical starting points\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#technical-baseline\" type=\"button\"><span>Technical starting points<\/span><span class=\"un-count\">9 questions<\/span><span class=\"arrow\">+<\/span><\/a><\/div><\/section><section class=\"un-topic-group\"><h3>Delivery &amp; control<\/h3><div class=\"un-topic-grid\"><a aria-expanded=\"false\" class=\"un-topic-link\" data-inline-cat=\"bathroom-technical-decisions\" data-inline-topic=\"Details for installation and use\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#installation-details\" type=\"button\"><span>Details for installation and use<\/span><span class=\"un-count\">7 questions<\/span><span class=\"arrow\">+<\/span><\/a><\/div><\/section><div class=\"un-inline-host\" data-inline-cat=\"bathroom-technical-decisions\" data-inline-host=\"\"><section class=\"un-inline-panel\" data-ssr-cat=\"bathroom-technical-decisions\" data-ssr-topic=\"Technical starting points\" hidden=\"\" id=\"technical-baseline\"><div class=\"un-inline-head\"><div><small>9 questions<\/small><h3>Technical starting points<\/h3><\/div><button aria-label=\"Close\" data-inline-close=\"\" type=\"button\">\u00d7<\/button><\/div><div class=\"un-inline-list un-faq-list\"><details class=\"un-faq\" id=\"faq-retained-layout\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What should be checked before relocating bathroom fittings?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-retained-layout\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-retained-layout\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Map the existing water and drainage routes, available floor space and connection options before fixing the new layout. Ask how a relocation would affect floor levels, shafts, access and adjacent rooms. Moving a toilet may create different routing constraints from moving a basin. Compare an option retaining service positions with one that relocates them. Obtain confirmation of feasibility before ordering sanitaryware or fitted furniture that depends on the chosen arrangement.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-floor-build-up\">What information is needed to coordinate a bathroom floor build-up?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-retained-layout\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-retained-layout\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" id=\"faq-floor-build-up\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What information is needed to coordinate a bathroom floor build-up?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-floor-build-up\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-floor-build-up\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Have the full build-up drawn, from the existing supporting floor through additional layers, drainage, any heating system, waterproofing and final finish. Check the resulting height at the doorway and shower transition. Identify who will assess the existing floor\u2019s suitability and loading where changes are proposed. Select the drain and tiles as part of this coordinated assembly, with the responsible parties confirming how each component fits before materials are ordered.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\">What should be agreed about waterproofing behind bathroom tiles?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-floor-build-up\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-floor-build-up\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"What should be agreed about waterproofing behind bathroom tiles\" id=\"faq-waterproofing\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What should be agreed about waterproofing behind bathroom tiles?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-waterproofing\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-waterproofing\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Ask for a coordinated system covering the substrate, waterproofing, junctions and finish, together with the manufacturer\u2019s applicable installation instructions. Record how corners, penetrations, the shower drain and transitions will be detailed, and who is responsible for each connection. Arrange checks before those details disappear behind tiles. Retain photographs and product information in the handover file. A tile specification or visible sealant joint alone does not describe the complete waterproofing assembly.<\/p><p itemprop=\"text\">\u201cMoisture-resistant\u201d board does not make the complete shower wall waterproof. TBA explains that water can reach the substrate through tile joints, seams and penetrations, and that moisture-resistant boards do not form complete waterproofing. Identify the waterproofing layer in the proposed assembly and its junctions at corners and penetrations. The board type and a water-repellent grout do not replace that system description.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-close-up-check\">What should be checked before bathroom work is concealed?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-waterproofing\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" id=\"faq-ventilation\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">Which ventilation questions should be addressed for a new bathroom?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-ventilation\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-ventilation\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Ask how replacement air will enter, how air will be extracted and how the bathroom connects to the existing ventilation system. Discuss suitable controls, noise, maintenance and access to components. Selecting a new fan without considering the complete air path leaves important questions unanswered. Coordinate ventilation before finishing ceilings and walls so routes and provisions can be resolved. For an existing installation, ask whether inspection or adjustment is needed for the proposed bathroom.<\/p><p class=\"un-answer-meta\">Source: <a href=\"https:\/\/www.milieucentraal.nl\/huis-en-tuin\/verbouwen\/nieuwe-badkamer\/\">Milieu Centraal: planning a new bathroom (Dutch)<\/a><\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/insulation-ventilation-renovation\/#vraag-air-paths\">Which airflow routes should be checked after changing a layout or internal doors?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-ventilation\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-ventilation\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"partial bathroom renovation bathroom refresh retain existing sanitaryware\" id=\"faq-bathroom-partial-or-full\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">When does a partial bathroom renovation make sense?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-partial-or-full\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-partial-or-full\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">A partial renovation may suit a change to a vanity, tap or visible finish when the existing layout still works. Start by listing what functions well, what is damaged and the particular problem you want the change to solve.<\/p><p itemprop=\"text\">Have the existing connections, substrate and surrounding finishes assessed for compatibility with the replacement. Persistent moisture, loose tiles or unexplained damage need investigation rather than simply a new surface.<\/p><p itemprop=\"text\">Compare a limited intervention with a coordinated renovation, including making good adjacent finishes and retaining maintenance access. Ask which existing components remain outside the scope and who has assessed their condition. This makes the boundary between new and retained work clear.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-retained-layout\">What should be checked before relocating bathroom fittings?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-partial-or-full\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-partial-or-full\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"bath versus shower bathroom priorities small bathroom brief\" id=\"faq-bathroom-household-brief\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">How do I choose between a bath, a larger shower and more storage?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-household-brief\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-household-brief\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Start with the way your household uses the bathroom. Note who uses it, whether people get ready together, what currently feels awkward and which items need to be close at hand. Separate essential functions from features you could give up if space becomes tight.<\/p><p itemprop=\"text\">Ask for two realistic layouts using actual product dimensions. Look beyond the footprint of the bath or shower: include open doors and drawers, cleaning access, space to dry yourself and somewhere for clothing.<\/p><p itemprop=\"text\">Consider foreseeable household changes as well. Choose the option that supports your most important routines. Adding another fitting is not useful if it makes everyday movement or storage less practical.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-retained-layout\">What should be checked before relocating bathroom fittings?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-household-brief\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-household-brief\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"bathroom storage capacity vanity storage bathroom cabinet planning\" id=\"faq-bathroom-storage-inventory\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">How much storage does my bathroom need?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-storage-inventory\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-storage-inventory\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">List what will actually stay in the bathroom: daily toiletries, towels, spare supplies and cleaning products. Measure tall bottles and larger appliances separately. Then distinguish items you need within reach every day from those that could be stored elsewhere.<\/p><p itemprop=\"text\">For a vanity unit, check usable internal space rather than its overall dimensions alone. A trap, pipework or drawer arrangement may affect capacity. Confirm that drawers and doors can open fully without hitting nearby fittings.<\/p><p itemprop=\"text\">Ask whether the furniture is intended for its proposed position and follow its care instructions. Keep service access clear: an additional shelf should not obstruct an opening needed to maintain concealed components.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-maintenance-access\">How should maintenance access be included in a bathroom design?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-storage-inventory\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-storage-inventory\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"compare bathroom quotes bathroom renovation scope sanitaryware allowances\" id=\"faq-bathroom-quote-comparison\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">Which items must match when comparing bathroom quotations?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-quote-comparison\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-quote-comparison\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Give each contractor the same layout and product choices. Check whether demolition, waste removal, floor and wall preparation, service alterations, waterproofing, tiling, sanitaryware installation and making good outside the room are included. Ask for differences to be identified item by item.<\/p><p itemprop=\"text\">Check quantities, tile allowances and any items that remain estimates. An allowance for sanitaryware you have not chosen is different from a fixed price for an exact model. Clarify work you or another supplier must arrange.<\/p><p itemprop=\"text\">Record the scope, exclusions and process for pricing changes. Compare totals after those points are aligned; a lower quotation may cover different work or preparation.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\">What should be agreed about waterproofing behind bathroom tiles?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-quote-comparison\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-quote-comparison\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"What does a bathroom renovation involve beyond replacing sanitaryware\" id=\"faq-bathroom-renovation-meaning\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What does a bathroom renovation involve beyond replacing sanitaryware?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-renovation-meaning\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-renovation-meaning\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">A bathroom renovation renews an existing bathroom. It may replace visible items, or also change the layout, services, floor and wall assembly, ventilation and finishes. New sanitaryware is one part of the result; it does not establish what work happens behind or beneath the visible surfaces.<\/p><p itemprop=\"text\">The distinction becomes concrete at the work boundary. Replacing a vanity in the same position differs from relocating a shower and rebuilding its floor assembly. For each option, identify retained items, renewed work and adjacent surfaces to be made good. This separates cosmetic renewal from a technical alteration without assuming that a new appearance resolves existing damp or connection problems.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-partial-or-full\">When does a partial bathroom renovation make sense?<\/a> \u00b7 <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-quote-comparison\">Which items must match when comparing bathroom quotations?<\/a> \u00b7 <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\">What should be agreed about waterproofing behind bathroom tiles?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-renovation-meaning\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-renovation-meaning\">Link to this answer<\/a><\/div><\/div><\/details><\/div><\/section><section class=\"un-inline-panel\" data-ssr-cat=\"bathroom-technical-decisions\" data-ssr-topic=\"Details for installation and use\" hidden=\"\" id=\"installation-details\"><div class=\"un-inline-head\"><div><small>7 questions<\/small><h3>Details for installation and use<\/h3><\/div><button aria-label=\"Close\" data-inline-close=\"\" type=\"button\">\u00d7<\/button><\/div><div class=\"un-inline-list un-faq-list\"><details class=\"un-faq\" id=\"faq-tile-setout\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What should a bathroom tile layout specify?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-tile-setout\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-tile-setout\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Specify the actual tile format, grout width, laying direction, starting lines and visible cut pieces. Develop the shower, niche, basin wall and transitions to other materials in particular. Review wall and floor layouts together so alignments are deliberate. Check actual product dimensions and the layout before ordering. Agree how changes will be approved if site measurements differ, preventing an unresolved design decision from being left to the moment tiles are installed.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/layout-interior-design-drawings\/#vraag-material-samples\">How should I assess colours and materials before choosing them?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-tile-setout\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-tile-setout\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" id=\"faq-maintenance-access\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">How should maintenance access be included in a bathroom design?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-maintenance-access\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-maintenance-access\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">List components that need continued access, such as isolation valves, traps, concealed cisterns and ventilation equipment. Confirm the access requirements of the selected products and draw them before cabinetry or service walls are built. Check that an access panel can still open after sanitaryware is installed. Keep product manuals and photographs of concealed routes. An uncluttered design is easier to maintain when access is deliberately integrated into its details.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-close-up-check\">What should be checked before bathroom work is concealed?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-maintenance-access\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-maintenance-access\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" id=\"faq-water-energy\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">How can I compare bathroom products for water and energy use?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-water-energy\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-water-energy\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Compare showerheads using their stated water consumption and confirm compatibility with your hot-water system. For taps, consider how their operation helps avoid unnecessary hot-water use. Multiple shower outlets also change the required provisions and usage. Milieu Centraal discusses options including water-saving showerheads and shower heat recovery. Ask which measures suit your home and what installation would involve; one efficient product does not establish the performance of the entire bathroom.<\/p><p class=\"un-answer-meta\">Source: <a href=\"https:\/\/www.milieucentraal.nl\/huis-en-tuin\/verbouwen\/nieuwe-badkamer\/\">Milieu Centraal: planning a new bathroom (Dutch)<\/a><\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-retained-layout\">What should be checked before relocating bathroom fittings?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-water-energy\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-water-energy\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" id=\"faq-close-up-check\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What should be checked before bathroom work is concealed?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-close-up-check\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-close-up-check\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Agree inspection points for service connections, pipe routes, waterproofing details and other work that will become inaccessible. Ask the responsible trades which tests, product checks or assessments apply to their work, and record the outcome. Photograph identifiable locations and store the images beside the current drawing. Resolve outstanding points before the next layer is installed. This record supports professional inspection by showing what was checked, when and by whom.<\/p><p class=\"un-answer-meta\">Read next: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/renovation-budget-planning\/#vraag-dependencies\">How do I establish a realistic sequence for renovation work?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-close-up-check\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-close-up-check\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"only bathroom renovation temporary shower arrangements living through bathroom work\" id=\"faq-bathroom-temporary-facilities\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">What should I arrange if my only bathroom will be out of use?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-temporary-facilities\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-temporary-facilities\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Before work starts, agree when the toilet, shower and basin will be unavailable and whether any facilities can remain usable. Confirm this by phase. Partial availability is only meaningful when everyone knows when the room can safely be entered.<\/p><p itemprop=\"text\">Arrange a workable alternative for everyone at home, such as showering elsewhere or temporary accommodation. Include toiletries, cleaning, the construction access route and access for the trades.<\/p><p itemprop=\"text\">Identify who will communicate programme changes and confirm when each facility can be used again. Any temporary sanitary connections should be assessed and provided by the responsible supplier or trades rather than improvised by occupants. Keep these practical arrangements alongside the agreed programme.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-close-up-check\">What should be checked before bathroom work is concealed?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-temporary-facilities\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-temporary-facilities\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"bathroom finish maintenance coloured tap care bathroom furniture cleaning\" id=\"faq-bathroom-cleaning-compatible-finishes\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">How should cleaning and care influence bathroom finish choices?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-cleaning-compatible-finishes\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-cleaning-compatible-finishes\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Before ordering, obtain the care instructions for the selected taps, basin, shower screen, furniture and tiles. Check which cleaners and tools are permitted. A cleaner suitable for one surface may be unsuitable for another coating or finish.<\/p><p itemprop=\"text\">Also consider places where water collects and edges, joints or corners that would be difficult to reach. In a showroom, ask to see how doors, drain components and storage compartments can be accessed for normal cleaning.<\/p><p itemprop=\"text\">Keep instructions for each exact product. Use its stated cleaning method and dosage rather than treating the whole bathroom with one universal product. Ask the manufacturer about uncertain existing finishes before experimenting with them.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-maintenance-access\">How should maintenance access be included in a bathroom design?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-cleaning-compatible-finishes\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-cleaning-compatible-finishes\">Link to this answer<\/a><\/div><\/div><\/details><details class=\"un-faq\" data-search-synonyms=\"replace damaged shower tile local bathroom tile repair cracked shower tile\" id=\"faq-bathroom-single-tile-repair\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><summary><span><\/span><span itemprop=\"name\">Can one damaged shower tile be replaced?<\/span><span aria-hidden=\"true\" class=\"un-sr\" id=\"vraag-bathroom-single-tile-repair\"><\/span><\/summary><div class=\"un-answer\" id=\"antwoord-bathroom-single-tile-repair\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\"><p itemprop=\"text\">Local repair may be possible, but first have the cause of the damage and the assembly beneath it assessed. A visible crack may be isolated or associated with movement, a loose substrate or moisture damage. Replacing the tile alone does not establish the cause.<\/p><p itemprop=\"text\">Check whether a suitable spare tile is available: colour or dimensions can differ between batches of the same product. Ask the contractor how the repair will meet existing grout, edges and waterproofing.<\/p><p itemprop=\"text\">Agree what happens if opening the area reveals further damage. In a wet zone, the repair needs to account for the waterproofing behind the tile as well as the visible finish. This requires assessment of the actual assembly.<\/p><p class=\"un-answer-meta\">Read more: <a href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\">What should be agreed about waterproofing behind bathroom tiles?<\/a><\/p><div class=\"un-answer-meta\"><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-single-tile-repair\">Link to this question<\/a><a class=\"un-tag\" href=\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-single-tile-repair\">Link to this answer<\/a><\/div><\/div><\/details><\/div><\/section><\/div><\/div><\/div><\/details><\/div><\/section><style id=\"unitn-published-faq-sources-style\">.un-pub-sources ul{margin:0;padding-left:1.25rem}.un-pub-sources li{margin:.75rem 0;overflow-wrap:anywhere}.un-pub-sources a{text-decoration:underline;text-underline-offset:.18em}.un-pub-sources small{display:block;font-size:.82em;opacity:.8}.un-pub-sources p{max-width:75ch}<\/style><section aria-labelledby=\"unitn-faq-sources-title\" class=\"un-section un-pub-sources\" id=\"unitn-faq-sources\"><div class=\"un-section-head\"><div><h2 id=\"unitn-faq-sources-title\">Sources for these answers<\/h2><p>These sources support the answers on this page. The applicability of rules and technical choices depends on the property and proposed work.<\/p><\/div><\/div><ul><li><a href=\"https:\/\/consument.acm.nl\/checklists\/checklist-offertes-vergelijken\">ACM ConsuWijzer \u2014 Checklist: offertes vergelijken<\/a><small>Accessed: 2026-10-16<\/small><\/li><li><a href=\"https:\/\/eu.schluter.com\/nl-NL\/schimmel-in-de-badkamer-voorkom-het-met-deze-tips-8364.html\">Schl\u00fcter-Systems \u2014 Schimmel in de badkamer: voegen en afdichting<\/a><small>Accessed: 2026-10-16<\/small><\/li><li><a href=\"https:\/\/www.geberit.nl\/badkamerproducten\/inspiratie\/handige-weetjes\/badkamers-functioneel-ontwerpen\/\">Geberit \u2014 Kleine badkamers praktisch inrichten<\/a><small>Accessed: 2026-10-16<\/small><\/li><li><a href=\"https:\/\/www.hansgrohe.com\/service\/faq\/cleaning-care\">Hansgrohe \u2014 Cleaning &amp; care FAQ<\/a><small>Accessed: 2026-10-16<\/small><\/li><li><a href=\"https:\/\/www.tbafbouw.nl\/wp-content\/uploads\/2026\/06\/TBA-kennispaper-6-Waterdicht-membraam-achter-tegelwerk-op-gipsplaten.pdf\">TBA \u2014 Waterdicht membraan achter tegelwerk op gipsplaten, februari2026<\/a><small>Accessed: 2026-10-17<\/small><\/li><\/ul><\/section><section aria-labelledby=\"un-cta-title\" class=\"un-cta\"><div class=\"un-cta-inner\"><div aria-hidden=\"true\" class=\"un-cta-icon\"><svg fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" viewbox=\"0 0 24 24\"><path d=\"M21 11.5a8.4 8.4 0 0 1-9 8.4 9.3 9.3 0 0 1-3.7-.8L3 21l1.7-4.7A8.2 8.2 0 1 1 21 11.5Z\"><\/path><\/svg><\/div><div><div class=\"un-cta-kicker\">Personal next step<\/div><h2 id=\"un-cta-title\">Can\u2019t find your renovation question?<\/h2><p>Try the smart search again with a little more context about your home, design decision, programme or delivery. It will route you to the most relevant knowledge.<\/p><\/div><a class=\"un-cta-button\" href=\"mailto:info@unitn.nl\">Ask your question<\/a><\/div><\/section><\/main><\/div><button aria-label=\"Back to top\" class=\"un-top\" id=\"un-top\" type=\"button\">\u2191<\/button><\/div><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/unitn.nl\/#organization\",\"name\":\"UNIT N\",\"url\":\"https:\/\/unitn.nl\/\"},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/unitn.nl\/#website\",\"url\":\"https:\/\/unitn.nl\/\",\"name\":\"UNIT N\",\"publisher\":{\"@id\":\"https:\/\/unitn.nl\/#organization\"}},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#webpage\",\"url\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/\",\"name\":\"Bathroom preparation: technical decisions and details\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\/\/unitn.nl\/#website\"},\"publisher\":{\"@id\":\"https:\/\/unitn.nl\/#organization\"},\"dateModified\":\"2026-10-17\",\"breadcrumb\":{\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#breadcrumb\"},\"mainEntity\":[{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-retained-layout\",\"name\":\"What should be checked before relocating bathroom fittings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-retained-layout\",\"text\":\"Map the existing water and drainage routes, available floor space and connection options before fixing the new layout. Ask how a relocation would affect floor levels, shafts, access and adjacent rooms. Moving a toilet may create different routing constraints from moving a basin. Compare an option retaining service positions with one that relocates them. Obtain confirmation of feasibility before ordering sanitaryware or fitted furniture that depends on the chosen arrangement.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-floor-build-up\",\"name\":\"What information is needed to coordinate a bathroom floor build-up?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-floor-build-up\",\"text\":\"Have the full build-up drawn, from the existing supporting floor through additional layers, drainage, any heating system, waterproofing and final finish. Check the resulting height at the doorway and shower transition. Identify who will assess the existing floor\u2019s suitability and loading where changes are proposed. Select the drain and tiles as part of this coordinated assembly, with the responsible parties confirming how each component fits before materials are ordered.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-waterproofing\",\"name\":\"What should be agreed about waterproofing behind bathroom tiles?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-waterproofing\",\"text\":\"Ask for a coordinated system covering the substrate, waterproofing, junctions and finish, together with the manufacturer\u2019s applicable installation instructions. Record how corners, penetrations, the shower drain and transitions will be detailed, and who is responsible for each connection. Arrange checks before those details disappear behind tiles. Retain photographs and product information in the handover file. A tile specification or visible sealant joint alone does not describe the complete waterproofing assembly. \u201cMoisture-resistant\u201d board does not make the complete shower wall waterproof. TBA explains that water can reach the substrate through tile joints, seams and penetrations, and that moisture-resistant boards do not form complete waterproofing. Identify the waterproofing layer in the proposed assembly and its junctions at corners and penetrations. The board type and a water-repellent grout do not replace that system description.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-ventilation\",\"name\":\"Which ventilation questions should be addressed for a new bathroom?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-ventilation\",\"text\":\"Ask how replacement air will enter, how air will be extracted and how the bathroom connects to the existing ventilation system. Discuss suitable controls, noise, maintenance and access to components. Selecting a new fan without considering the complete air path leaves important questions unanswered. Coordinate ventilation before finishing ceilings and walls so routes and provisions can be resolved. For an existing installation, ask whether inspection or adjustment is needed for the proposed bathroom.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-tile-setout\",\"name\":\"What should a bathroom tile layout specify?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-tile-setout\",\"text\":\"Specify the actual tile format, grout width, laying direction, starting lines and visible cut pieces. Develop the shower, niche, basin wall and transitions to other materials in particular. Review wall and floor layouts together so alignments are deliberate. Check actual product dimensions and the layout before ordering. Agree how changes will be approved if site measurements differ, preventing an unresolved design decision from being left to the moment tiles are installed.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-maintenance-access\",\"name\":\"How should maintenance access be included in a bathroom design?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-maintenance-access\",\"text\":\"List components that need continued access, such as isolation valves, traps, concealed cisterns and ventilation equipment. Confirm the access requirements of the selected products and draw them before cabinetry or service walls are built. Check that an access panel can still open after sanitaryware is installed. Keep product manuals and photographs of concealed routes. An uncluttered design is easier to maintain when access is deliberately integrated into its details.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-water-energy\",\"name\":\"How can I compare bathroom products for water and energy use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-water-energy\",\"text\":\"Compare showerheads using their stated water consumption and confirm compatibility with your hot-water system. For taps, consider how their operation helps avoid unnecessary hot-water use. Multiple shower outlets also change the required provisions and usage. Milieu Centraal discusses options including water-saving showerheads and shower heat recovery. Ask which measures suit your home and what installation would involve; one efficient product does not establish the performance of the entire bathroom.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-close-up-check\",\"name\":\"What should be checked before bathroom work is concealed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-close-up-check\",\"text\":\"Agree inspection points for service connections, pipe routes, waterproofing details and other work that will become inaccessible. Ask the responsible trades which tests, product checks or assessments apply to their work, and record the outcome. Photograph identifiable locations and store the images beside the current drawing. Resolve outstanding points before the next layer is installed. This record supports professional inspection by showing what was checked, when and by whom.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-partial-or-full\",\"name\":\"When does a partial bathroom renovation make sense?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-partial-or-full\",\"text\":\"A partial renovation may suit a change to a vanity, tap or visible finish when the existing layout still works. Start by listing what functions well, what is damaged and the particular problem you want the change to solve. Have the existing connections, substrate and surrounding finishes assessed for compatibility with the replacement. Persistent moisture, loose tiles or unexplained damage need investigation rather than simply a new surface. Compare a limited intervention with a coordinated renovation, including making good adjacent finishes and retaining maintenance access. Ask which existing components remain outside the scope and who has assessed their condition. This makes the boundary between new and retained work clear.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-household-brief\",\"name\":\"How do I choose between a bath, a larger shower and more storage?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-household-brief\",\"text\":\"Start with the way your household uses the bathroom. Note who uses it, whether people get ready together, what currently feels awkward and which items need to be close at hand. Separate essential functions from features you could give up if space becomes tight. Ask for two realistic layouts using actual product dimensions. Look beyond the footprint of the bath or shower: include open doors and drawers, cleaning access, space to dry yourself and somewhere for clothing. Consider foreseeable household changes as well. Choose the option that supports your most important routines. Adding another fitting is not useful if it makes everyday movement or storage less practical.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-storage-inventory\",\"name\":\"How much storage does my bathroom need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-storage-inventory\",\"text\":\"List what will actually stay in the bathroom: daily toiletries, towels, spare supplies and cleaning products. Measure tall bottles and larger appliances separately. Then distinguish items you need within reach every day from those that could be stored elsewhere. For a vanity unit, check usable internal space rather than its overall dimensions alone. A trap, pipework or drawer arrangement may affect capacity. Confirm that drawers and doors can open fully without hitting nearby fittings. Ask whether the furniture is intended for its proposed position and follow its care instructions. Keep service access clear: an additional shelf should not obstruct an opening needed to maintain concealed components.\"}},{\"@type\":\"Question\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#vraag-bathroom-temporary-facilities\",\"name\":\"What should I arrange if my only bathroom will be out of use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"@id\":\"https:\/\/unitn.nl\/en\/knowledge-center\/bathroom-technical-decisions\/#antwoord-bathroom-temporary-facilities\",\"text\":\"Before work starts, agree when the toilet, shower and basin will be unavailable and whether any facilities can remain usable. Confirm this by phase. Partial availability is only meaningful when everyone knows when the room can safely be entered. Arrange a workable alternative for everyone at home, such as showering elsewhere or temporary accommodation. Include toiletries, cleaning, the construction access route and access for the trades. 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.wp-block-post-title{font-size:24px;margin:6px 0 16px;max-width:none;line-height:1.25}\n#unitn-main .unitn-blog .ub-card .wp-block-post-title a{color:var(--ub-ink);text-decoration:none}\n#unitn-main .unitn-blog .ub-card .wp-block-post-date{font-size:12px;color:var(--ub-muted);margin-bottom:4px}\n#unitn-main .unitn-blog .ub-card .wp-block-post-excerpt{font-size:15px;line-height:1.65;margin-bottom:22px}\n#unitn-main .unitn-blog .ub-card .wp-block-post-excerpt p{margin:0;font-size:inherit}\n#unitn-main .unitn-blog .ub-card .wp-block-read-more{font-size:14px;font-weight:700;margin-top:auto;align-self:flex-start;text-decoration:none;padding-bottom:4px;border-bottom:1px solid var(--ub-red)}\n#unitn-main .unitn-blog .wp-block-query-pagination{display:flex;justify-content:center;gap:20px;margin-top:32px;font-size:15px}\n#unitn-main .unitn-blog .ub-hub-end{padding:30px;border:1px solid var(--ub-line);margin-top:42px;background:var(--ub-cream)}\n#unitn-main .unitn-blog [hidden]{display:none!important}\n#unitn-main .unitn-guide-enrichment{max-width:1160px!important;margin:0 auto 48px!important;padding:36px!important;background:var(--ub-cream);border-top:3px solid var(--ub-red);font-size:16px}\n#unitn-main .unitn-guide-enrichment h2{font-size:30px;margin:0 0 24px}\n#unitn-main .unitn-guide-enrichment h3{font-size:22px;margin:26px 0 14px}\n#unitn-main .unitn-guide-enrichment p{margin:0 0 18px}\n#unitn-main .unitn-guide-enrichment table{border-collapse:collapse;width:100%;font-size:14px;background:#fff}\n#unitn-main .unitn-guide-enrichment :is(th,td){padding:12px;border:1px solid #ddd0c0;text-align:left;vertical-align:top}\n#unitn-main .unitn-guide-enrichment th{background:#eee1d2}\n#unitn-main .unitn-guide-enrichment .wp-block-table{overflow:auto;margin:20px 0}\n#unitn-main .unitn-guide-enrichment a{color:var(--ub-red);text-underline-offset:3px}\n<\/style>\n\n\n<h2 class=\"wp-block-heading\" id=\"unitn-practical-update\">Bathroom planning: agree the checkpoints<\/h2>\n\n\n<h3 class=\"wp-block-heading\">A phase means more than working days<\/h3>\n\n\n<p class=\"wp-block-paragraph\">Discuss the bathroom programme as a sequence of conditions. Active work, deliveries, investigations and drying or curing periods are different elements. Record what must be ready before each next phase begins. This table is a discussion framework, not a fixed project duration.<\/p>\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Phase<\/th><th>What needs definition?<\/th><th>Check before proceeding<\/th><\/tr><\/thead><tbody><tr><td>Preparation<\/td><td>Final layout, products and temporary facilities<\/td><td>Orders, dimensions and work arrangements confirmed<\/td><\/tr><tr><td>Opening and building up<\/td><td>Existing condition and necessary alterations<\/td><td>Investigation points resolved; inspection before closing<\/td><\/tr><tr><td>Finishing and installation<\/td><td>Specified layers and junction details<\/td><td>Drying, curing and installation requirements confirmed<\/td><\/tr><tr><td>Returning to use<\/td><td>Functional checks and maintenance information<\/td><td>Release for use by the responsible contractors<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p class=\"wp-block-paragraph\">Ask separately when the shower can be used again. A finished appearance does not automatically mean that every selected material is ready for service. The relevant trades must confirm this against the installed system and site conditions.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Also record who reports delays and how a revised sequence will be coordinated. If your only bathroom will be unavailable, agree temporary arrangements before work begins. Connect moving or accommodation decisions to confirmed milestones, keeping unresolved assumptions clearly visible.<\/p>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/en\/renovation-blogs\/\">Explore related renovation blogs<\/a><\/p>\n\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>The technical decisions behind a bathroom shape how the design can be installed and maintained. This guide covers service positions, floor build-up, waterproofing, ventilation and checks before work is concealed. Use it to ask focused questions, with the responsible professionals assessing installation details and system suitability for your home.<\/p>\n","protected":false},"author":285631636,"featured_media":27,"parent":99,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"unitn-knowledge-v2","meta":{"advanced_seo_description":"Prepare bathroom details: service positions, floor build-up, waterproofing, ventilation, tile layout and checks before finishes conceal the installation.","jetpack_seo_html_title":"Bathroom Preparation: Technical Decisions | UNIT N","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_locale":"en_US","_original_post":"unitn-kc-pair-bathroom-20261016","_unitn_knowledge_topic_id":"kc:bathroom:en","_unitn_knowledge_locale":"en","_unitn_knowledge_managed":true,"_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":true,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-105","page","type-page","status-publish","has-post-thumbnail","hentry","en-US"],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PhssMP-1H","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/pages\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/users\/285631636"}],"replies":[{"embeddable":true,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":9,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/pages\/105\/revisions"}],"predecessor-version":[{"id":740,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/pages\/105\/revisions\/740"}],"up":[{"embeddable":true,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/pages\/99"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/media\/27"}],"wp:attachment":[{"href":"https:\/\/unitn.nl\/wp-json\/wp\/v2\/media?parent=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}