{"id":3129,"date":"2025-06-04T13:21:23","date_gmt":"2025-06-04T13:21:23","guid":{"rendered":"https:\/\/ikoknowledgecenter.com\/?post_type=docs&p=3129"},"modified":"2025-06-04T13:21:24","modified_gmt":"2025-06-04T13:21:24","password":"","slug":"peut-on-poser-un-pare-vapeur-sur-un-support-en-beton-qui-nest-pas-encore-sec-a-lair","status":"publish","type":"docs","link":"https:\/\/ikoknowledgecenter.com\/fr\/docs\/systeme-de-toiture-plat\/peut-on-poser-un-pare-vapeur-sur-un-support-en-beton-qui-nest-pas-encore-sec-a-lair\/","title":{"rendered":"Peut-on poser un pare-vapeur sur un support en b\u00e9ton qui n\u2019est pas encore sec \u00e0 l\u2019air ?"},"content":{"rendered":"\n

Non, un pare-vapeur et le primaire associ\u00e9 ne peuvent pas \u00eatre appliqu\u00e9s sur un support en b\u00e9ton qui n\u2019est pas sec \u00e0 l\u2019air (humidit\u00e9 visible \u00e0 l\u2019\u0153il nu).<\/strong>
Pour une mise en \u0153uvre correcte d\u2019un syst\u00e8me d\u2019\u00e9tanch\u00e9it\u00e9 bitumineux, il est essentiel que le support soit sec \u2013 en surface et en profondeur.<\/p>\n\n

Pourquoi un support sec est-il important pour la pose d\u2019un pare-vapeur ?<\/strong><\/span><\/h3>\n\n

Lorsqu\u2019un pare-vapeur ou un primaire est appliqu\u00e9 sur une dalle en b\u00e9ton humide ou en cours de s\u00e9chage (comme du b\u00e9ton fra\u00eechement coul\u00e9 ou du b\u00e9ton mousse), plusieurs probl\u00e8mes peuvent survenir :<\/p>\n\n

    \n
  • Mauvaise ou absence<\/strong> d\u2019adh\u00e9rence du primaire et du pare-vapeur<\/li>\n\n\n\n
  • Formation de cloques ou d\u00e9lamination<\/strong> due \u00e0 l\u2019emprisonnement d\u2019humidit\u00e9 r\u00e9siduelle<\/li>\n<\/ul>\n\n

    C\u2019est pourquoi il est crucial que le b\u00e9ton soit sec \u00e0 l\u2019air<\/strong> avant la pose du pare-vapeur.<\/p>\n\n

    Comment savoir si le support en b\u00e9ton est encore humide ?<\/strong><\/span><\/h3>\n\n

    Un contr\u00f4le visuel est une premi\u00e8re indication simple. Un b\u00e9ton ou b\u00e9ton mousse qui n\u2019est pas encore sec pr\u00e9sente souvent des zones sombres clairement visibles.<\/strong> Ces taches indiquent la pr\u00e9sence d\u2019humidit\u00e9 r\u00e9siduelle ou de parties encore en cours de s\u00e9chage.
    Une teinte uniforme, gris clair, sans diff\u00e9rence de couleur, est g\u00e9n\u00e9ralement le signe que le support est suffisamment sec.<\/p>\n\n

    \u00c0 titre indicatif<\/span> : le temps de s\u00e9chage th\u00e9orique communiqu\u00e9 pour un b\u00e9ton compl\u00e8tement sec est g\u00e9n\u00e9ralement d\u2019environ 28 jours.<\/p>\n\n

    \"\"
    Exemple de b\u00e9ton mousse partiellement sec et humide.<\/figcaption><\/figure>\n\n

    Pour plus de directives techniques concernant le taux d\u2019humidit\u00e9 des supports pour \u00e9tanch\u00e9it\u00e9, consultez la Note d’Information Technique NIT 280 de Buildwise.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Non, un pare-vapeur et le primaire associ\u00e9 ne peuvent pas \u00eatre appliqu\u00e9s sur un support en b\u00e9ton qui n\u2019est pas sec \u00e0 l\u2019air (humidit\u00e9 visible \u00e0 l\u2019\u0153il nu).Pour une mise en \u0153uvre correcte d\u2019un syst\u00e8me d\u2019\u00e9tanch\u00e9it\u00e9 bitumineux, il est essentiel que le support soit sec \u2013 en surface et en profondeur. Pourquoi un support sec […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"doc_category":[78],"glossaries":[],"doc_tag":[679,617,666,766],"class_list":["post-3129","docs","type-docs","status-publish","hentry","doc_category-systeme-de-toiture-plat","doc_tag-cloquage","doc_tag-conseils","doc_tag-pare-vapeur","doc_tag-substrat"],"year_month":"2026-07","word_count":290,"total_views":"399","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Luna Degraeve","author_nicename":"luna","author_url":"https:\/\/ikoknowledgecenter.com\/fr\/author\/luna\/"},"doc_category_info":[{"term_name":"Syst\u00e8me de toiture plat","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-category\/systeme-de-toiture-plat\/"}],"doc_tag_info":[{"term_name":"cloquage","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/cloquage\/"},{"term_name":"conseils","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/conseils\/"},{"term_name":"pare-vapeur","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/pare-vapeur\/"},{"term_name":"substrat","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/substrat\/"}],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/3129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/comments?post=3129"}],"version-history":[{"count":1,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/3129\/revisions"}],"predecessor-version":[{"id":3130,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/3129\/revisions\/3130"}],"wp:attachment":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/media?parent=3129"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/doc_category?post=3129"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/glossaries?post=3129"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/doc_tag?post=3129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}