{"id":4293,"date":"2025-10-14T09:58:03","date_gmt":"2025-10-14T09:58:03","guid":{"rendered":"https:\/\/ikoknowledgecenter.com\/docs\/uncategorized\/les-membranes-bitumineuses-peuvent-elles-etre-appliquees-directement-sur-des-membranes-detancheite-en-pvc\/"},"modified":"2026-09-15T11:56:30","modified_gmt":"2026-09-15T11:56:30","password":"","slug":"les-membranes-bitumineuses-peuvent-elles-etre-appliquees-directement-sur-des-membranes-detancheite-en-pvc","status":"publish","type":"docs","link":"https:\/\/ikoknowledgecenter.com\/fr\/docs\/systeme-de-toiture-plat\/les-membranes-bitumineuses-peuvent-elles-etre-appliquees-directement-sur-des-membranes-detancheite-en-pvc\/","title":{"rendered":"Les membranes bitumineuses peuvent-elles \u00eatre appliqu\u00e9es directement sur des membranes d\u2019\u00e9tanch\u00e9it\u00e9 en PVC ?"},"content":{"rendered":"\n

Non. Le PVC est compos\u00e9 de diff\u00e9rents composants, notamment de plastifiants qui permettent \u00e0 la membrane d\u2019\u00e9tanch\u00e9it\u00e9 de rester souple.<\/p>\n\n

Au fil du temps, une perte de plastifiants peut toutefois se produire. Les plastifiants migrent hors du produit, entra\u00eenant ainsi une perte de flexibilit\u00e9.<\/p>\n\n

Un contact direct avec des membranes bitumineuses acc\u00e9l\u00e8re ce ph\u00e9nom\u00e8ne. Le contact direct entre les deux mat\u00e9riaux est donc techniquement d\u00e9conseill\u00e9.<\/p>\n\n

Afin d\u2019\u00e9viter ce probl\u00e8me, nous recommandons deux solutions :<\/span><\/p>\n\n

    \n
  1. Appliquer une couche de s\u00e9paration<\/strong> sur les membranes PVC avant la pose des membranes bitumineuses.<\/li>\n\n\n\n
  2. Utiliser une sous-couche bitumin\u00e9e sur une seule face, avec du polyester en sous-face<\/strong> (par ex. IKO base 460P60<\/a> ou IKO base 360P60<\/a>). Celle-ci doit \u00eatre utilis\u00e9e comme premi\u00e8re couche du syst\u00e8me d\u2019\u00e9tanch\u00e9it\u00e9 bitumineux pos\u00e9 sur la membrane PVC.<\/li>\n<\/ol>\n\n

    Attention!<\/strong><\/p>\n\n

    Les syst\u00e8mes d\u2019\u00e9tanch\u00e9it\u00e9 bitumineux coll\u00e9s sur du PVC ne sont pas possibles. Seuls les syst\u00e8mes d\u2019\u00e9tanch\u00e9it\u00e9 bitumineux fix\u00e9s m\u00e9caniquement ou pos\u00e9s en ind\u00e9pendance avec lestage peuvent \u00eatre appliqu\u00e9s.<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

    Non. Le PVC est compos\u00e9 de diff\u00e9rents composants, notamment de plastifiants qui permettent \u00e0 la membrane d\u2019\u00e9tanch\u00e9it\u00e9 de rester souple. Au fil du temps, une perte de plastifiants peut toutefois se produire. Les plastifiants migrent hors du produit, entra\u00eenant ainsi une perte de flexibilit\u00e9. Un contact direct avec des membranes bitumineuses acc\u00e9l\u00e8re ce ph\u00e9nom\u00e8ne. Le […]<\/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":[973,616,644,635,706,675,605],"class_list":["post-4293","docs","type-docs","status-publish","hentry","doc_category-systeme-de-toiture-plat","doc_tag-compatibilite-fr","doc_tag-methode-de-fixation","doc_tag-renovation","doc_tag-sous-couche","doc_tag-structure-toit","doc_tag-systeme-toiture","doc_tag-toiture-plate"],"year_month":"2026-09","word_count":185,"total_views":0,"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":"compatibilit\u00e9","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/compatibilite-fr\/"},{"term_name":"m\u00e9thode de fixation","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/methode-de-fixation\/"},{"term_name":"r\u00e9novation","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/renovation\/"},{"term_name":"sous couche","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/sous-couche\/"},{"term_name":"structure du toit","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/structure-toit\/"},{"term_name":"syst\u00e8me de toiture","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/systeme-toiture\/"},{"term_name":"Toiture plate","term_url":"https:\/\/ikoknowledgecenter.com\/fr\/docs-tag\/toiture-plate\/"}],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/4293","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=4293"}],"version-history":[{"count":1,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/4293\/revisions"}],"predecessor-version":[{"id":4294,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/docs\/4293\/revisions\/4294"}],"wp:attachment":[{"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/media?parent=4293"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/doc_category?post=4293"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/glossaries?post=4293"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/ikoknowledgecenter.com\/fr\/wp-json\/wp\/v2\/doc_tag?post=4293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}