{"id":88773,"date":"2025-10-09T07:51:00","date_gmt":"2025-10-09T05:51:00","guid":{"rendered":"https:\/\/www.rubi.com\/?p=88773"},"modified":"2026-03-11T16:00:45","modified_gmt":"2026-03-11T14:00:45","slug":"etancheite-sous-carrelage-pourquoi-et-comment-la-garantir","status":"publish","type":"post","link":"https:\/\/www.rubi.com\/fr\/blog\/etancheite-sous-carrelage-pourquoi-et-comment-la-garantir\/","title":{"rendered":"\u00c9tanch\u00e9it\u00e9 sous carrelage : pourquoi et comment la garantir ?"},"content":{"rendered":"\n<p>L\u2019<strong>\u00e9tanch\u00e9it\u00e9 sous carrelage<\/strong> est une \u00e9tape indispensable lorsqu\u2019on souhaite carreler une salle de bain, une douche \u00e0 l\u2019italienne, une cuisine ou encore une terrasse. Contrairement aux id\u00e9es re\u00e7ues, le carrelage et ses joints ne suffisent pas \u00e0 bloquer compl\u00e8tement l\u2019humidit\u00e9. Sans protection adapt\u00e9e, les infiltrations d\u2019eau peuvent provoquer fissures, moisissures, d\u00e9collement et d\u00e9t\u00e9riorer durablement le support.<br>Voyons ensemble pourquoi l\u2019\u00e9tanch\u00e9it\u00e9 sous carrelage est essentielle, quels syst\u00e8mes existent et comment la mettre en \u0153uvre efficacement.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-bda52286-4c1a-4f9b-901e-a4e853e292b2\"><span class=\"hs-cta-node hs-cta-bda52286-4c1a-4f9b-901e-a4e853e292b2\" id=\"hs-cta-bda52286-4c1a-4f9b-901e-a4e853e292b2\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/bda52286-4c1a-4f9b-901e-a4e853e292b2\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-bda52286-4c1a-4f9b-901e-a4e853e292b2\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/bda52286-4c1a-4f9b-901e-a4e853e292b2.png\"  alt=\"* Voulez-vous obtenir le nouveau catalogue RUBI avec tous les outils ?  Cliquez ici et t\u00e9l\u00e9chargez-le gratuitement.\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, 'bda52286-4c1a-4f9b-901e-a4e853e292b2', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi l\u2019\u00e9tanch\u00e9it\u00e9 est-elle indispensable sous le carrelage ?<\/h2>\n\n\n\n<p>Le carrelage est r\u00e9sistant, mais pas totalement imperm\u00e9able. Les joints, soumis \u00e0 la dilatation naturelle des supports, finissent toujours par laisser passer l\u2019humidit\u00e9. R\u00e9sultat :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>infiltrations dans les murs et sols,<\/li>\n\n\n\n<li>apparition de moisissures,<\/li>\n\n\n\n<li>carreaux fissur\u00e9s ou d\u00e9coll\u00e9s,<\/li>\n\n\n\n<li>d\u00e9t\u00e9rioration de la structure du b\u00e2timent.<\/li>\n<\/ul>\n\n\n\n<p>Mettre en place une \u00e9tanch\u00e9it\u00e9 prot\u00e8ge le support, prolonge la dur\u00e9e de vie du rev\u00eatement et assure un confort optimal dans toutes les pi\u00e8ces humides ou zones expos\u00e9es \u00e0 l\u2019eau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les syst\u00e8mes d\u2019\u00e9tanch\u00e9it\u00e9 existants sous carrelage<\/h2>\n\n\n\n<p>Il existe plusieurs solutions pour r\u00e9aliser une <strong>\u00e9tanch\u00e9it\u00e9 sous carrelage<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPEC (Syst\u00e8me de Protection \u00e0 l\u2019Eau sous Carrelage)<\/strong> : principalement pour les murs ou les zones peu expos\u00e9es.<\/li>\n\n\n\n<li><strong>SEL (Syst\u00e8me d\u2019\u00c9tanch\u00e9it\u00e9 Liquide)<\/strong> : sous forme de r\u00e9sine ou p\u00e2te, id\u00e9al pour les sols de douche ou les surfaces directement en contact avec l\u2019eau.<\/li>\n\n\n\n<li><strong>Nattes ou membranes d\u2019\u00e9tanch\u00e9it\u00e9<\/strong> : pos\u00e9es sous le carrelage, elles assurent une barri\u00e8re continue et s\u2019adaptent aux sols comme aux murs.<\/li>\n\n\n\n<li><strong>Panneaux pr\u00eats \u00e0 carreler<\/strong> : \u00e9tanches par nature, ils offrent une solution pratique pour cr\u00e9er des parois ou des receveurs de douche.<\/li>\n<\/ul>\n\n\n\n<p>Chaque syst\u00e8me a ses avantages selon la surface et le niveau d\u2019exposition \u00e0 l\u2019humidit\u00e9.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-52ba610e-fe49-4f38-b5ad-74f19abbedc4\"><span class=\"hs-cta-node hs-cta-52ba610e-fe49-4f38-b5ad-74f19abbedc4\" id=\"hs-cta-52ba610e-fe49-4f38-b5ad-74f19abbedc4\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/52ba610e-fe49-4f38-b5ad-74f19abbedc4\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-52ba610e-fe49-4f38-b5ad-74f19abbedc4\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/52ba610e-fe49-4f38-b5ad-74f19abbedc4.png\"  alt=\"New call-to-action\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, '52ba610e-fe49-4f38-b5ad-74f19abbedc4', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<h2 class=\"wp-block-heading\">O\u00f9 et quand mettre une \u00e9tanch\u00e9it\u00e9 sous carrelage ?<\/h2>\n\n\n\n<p>L\u2019<strong>\u00e9tanch\u00e9it\u00e9 sous carrelage<\/strong> est obligatoire dans toutes les zones humides :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>salle de bain (sols et murs de douche, autour de la baignoire, derri\u00e8re les vasques),<\/li>\n\n\n\n<li>cuisine (cr\u00e9dence, plan de travail),<\/li>\n\n\n\n<li>terrasses et balcons,<\/li>\n\n\n\n<li>piscines et abords de bassins.<\/li>\n<\/ul>\n\n\n\n<p>La r\u00e8gle est simple : plus une surface est expos\u00e9e \u00e0 l\u2019eau, plus l\u2019\u00e9tanch\u00e9it\u00e9  doit \u00eatre renforc\u00e9e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tapes de mise en \u0153uvre <\/h2>\n\n\n\n<p>La r\u00e9ussite  d\u00e9pend du respect des \u00e9tapes suivantes :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Pr\u00e9paration du support<\/strong> : surface propre, plane et s\u00e8che.<\/li>\n\n\n\n<li><strong>Application d\u2019un primaire d\u2019accrochage<\/strong> si n\u00e9cessaire.<\/li>\n\n\n\n<li><strong>Pose du syst\u00e8me d\u2019\u00e9tanch\u00e9it\u00e9 choisi<\/strong> (SPEC, SEL, natte, panneau).<\/li>\n\n\n\n<li><strong>Traitement des points singuliers<\/strong> : angles, jonctions mur\/sol, siphons.<\/li>\n\n\n\n<li><strong>Pose du carrelage<\/strong> avec un mortier colle adapt\u00e9.<\/li>\n\n\n\n<li><strong>Jointoiement hydrofuge<\/strong> pour renforcer la protection.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"677\" src=\"https:\/\/www.rubi.com\/fr\/blog\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-24-122013-compressed-1-1024x677.jpg\" alt=\"\u00e9tanch\u00e9it\u00e9 sous carrelage\" class=\"wp-image-88785\" style=\"width:800px;height:auto\" srcset=\"https:\/\/www.rubi.com\/fr\/blog\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-24-122013-compressed-1-1024x677.jpg 1024w, https:\/\/www.rubi.com\/fr\/blog\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-24-122013-compressed-1-300x198.jpg 300w, https:\/\/www.rubi.com\/fr\/blog\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-24-122013-compressed-1-768x508.jpg 768w, https:\/\/www.rubi.com\/fr\/blog\/wp-content\/uploads\/2025\/09\/Capture-decran-2025-09-24-122013-compressed-1.jpg 1456w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Les erreurs \u00e0 \u00e9viter lors de la pose d\u2019une \u00e9tanch\u00e9it\u00e9<\/h2>\n\n\n\n<p>Certaines erreurs compromettent l\u2019efficacit\u00e9 d\u2019une <strong>\u00e9tanch\u00e9it\u00e9 sous carrelage<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>n\u00e9gliger la pr\u00e9paration du support,<\/li>\n\n\n\n<li>oublier les bandes d\u2019\u00e9tanch\u00e9it\u00e9 dans les angles,<\/li>\n\n\n\n<li>appliquer une \u00e9paisseur insuffisante de produit,<\/li>\n\n\n\n<li>carreler avant le s\u00e9chage complet du syst\u00e8me,<\/li>\n\n\n\n<li>n\u00e9gliger les joints ou ne pas utiliser un mastic adapt\u00e9 aux zones humides.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Contr\u00f4ler l\u2019efficacit\u00e9 de l\u2019\u00e9tanch\u00e9it\u00e9<\/h2>\n\n\n\n<p>Une fois le carrelage pos\u00e9, il est recommand\u00e9 de v\u00e9rifier :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>l\u2019absence d\u2019infiltrations aux jonctions,<\/li>\n\n\n\n<li>la bonne pente des sols vers les \u00e9vacuations (notamment en douche \u00e0 l\u2019italienne),<\/li>\n\n\n\n<li>l\u2019\u00e9tat r\u00e9gulier des joints (\u00e0 refaire tous les quelques ann\u00e9es si n\u00e9cessaire).<\/li>\n<\/ul>\n\n\n\n<p>Un contr\u00f4le visuel et un entretien r\u00e9gulier permettent de conserver une \u00e9tanch\u00e9it\u00e9 durable et fiable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ \/ Questions fr\u00e9quentes <\/h2>\n\n\n\n<p><strong>Le carrelage est-il \u00e9tanche par nature ?<\/strong><br>Non. M\u00eame un carreau de qualit\u00e9 laisse passer l\u2019humidit\u00e9 au niveau des joints et du mortier.<\/p>\n\n\n\n<p><strong>Quelle est la diff\u00e9rence entre un SPEC et un SEL ?<\/strong><br>Le SPEC prot\u00e8ge surtout les murs et zones peu expos\u00e9es, tandis que le SEL est con\u00e7u pour les surfaces directement en contact avec l\u2019eau, comme les sols de douche.<\/p>\n\n\n\n<p><strong>Faut-il mettre une \u00e9tanch\u00e9it\u00e9 sous carrelage \u00e0 l\u2019ext\u00e9rieur ?<\/strong><br>Oui. Terrasses, balcons et piscines n\u00e9cessitent une protection renforc\u00e9e contre les intemp\u00e9ries.<\/p>\n\n\n\n<p><strong>Peut-on r\u00e9aliser soi-m\u00eame une \u00e9tanch\u00e9it\u00e9 sous carrelage ?<\/strong><br>Oui, avec les bons produits (kits pr\u00eats \u00e0 l\u2019emploi, r\u00e9sines ou nattes), mais pour les zones sensibles comme une douche \u00e0 l\u2019italienne, l\u2019intervention d\u2019un professionnel est recommand\u00e9e.<\/p>\n\n\n\n<p>Envie d\u2019en savoir plus ? Consultez nos autres articles disponibles sur le <strong><a href=\"https:\/\/www.rubi.com\/fr\/blog\/\" target=\"_blank\" rel=\"noreferrer noopener\">blog Rubi.<\/a><\/strong><\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-67f7d764-a4ea-4907-9ae7-243980831078\"><span class=\"hs-cta-node hs-cta-67f7d764-a4ea-4907-9ae7-243980831078\" id=\"hs-cta-67f7d764-a4ea-4907-9ae7-243980831078\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/67f7d764-a4ea-4907-9ae7-243980831078\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-67f7d764-a4ea-4907-9ae7-243980831078\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/67f7d764-a4ea-4907-9ae7-243980831078.png\"  alt=\"New call-to-action\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, '67f7d764-a4ea-4907-9ae7-243980831078', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n","protected":false},"excerpt":{"rendered":"<p>L\u2019\u00e9tanch\u00e9it\u00e9 sous carrelage est une \u00e9tape indispensable lorsqu\u2019on souhaite carreler une salle de bain, une douche \u00e0 l\u2019italienne, une cuisine ou encore une terrasse. Contrairement aux id\u00e9es re\u00e7ues, le carrelage et ses joints ne suffisent pas \u00e0 bloquer compl\u00e8tement l\u2019humidit\u00e9. Sans protection adapt\u00e9e, les infiltrations d\u2019eau peuvent provoquer fissures, moisissures, d\u00e9collement et d\u00e9t\u00e9riorer durablement le &hellip; <a href=\"https:\/\/www.rubi.com\/fr\/blog\/etancheite-sous-carrelage-pourquoi-et-comment-la-garantir\/\">Continued<\/a><\/p>\n","protected":false},"author":49,"featured_media":88785,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[470,1215,779],"tags":[512,2555,2554],"class_list":["post-88773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-autres-themes-carrelage","category-installation-fr","category-rubi-tools","tag-carrelage","tag-etancheite","tag-etancheite-sous-carrelage"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00c9tanch\u00e9it\u00e9 sous carrelage : pourquoi et comment la garantir ? 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