{"id":8988,"date":"2020-03-26T18:20:38","date_gmt":"2020-03-26T18:20:38","guid":{"rendered":"https:\/\/roofingcanada.com\/?post_type=docs&p=8988"},"modified":"2020-03-27T16:16:11","modified_gmt":"2020-03-27T16:16:11","slug":"7-2-5-preparation-du-platelage","status":"publish","type":"docs","link":"https:\/\/roofingcanada.com\/fr\/docs\/manuel-de-reference-sur-les-couvertures-au-canada\/chapitre-7-membranes-de-couverture-monocouches\/7-2-membranes-thermodurcies\/7-2-5-preparation-du-platelage\/","title":{"rendered":"7.2.5 Pr\u00e9paration du platelage"},"content":{"rendered":"

Tous les platelages devant \u00eatre recouverts de membranes thermodurcies doivent \u00eatre lisses, propres, secs et suffisamment solides pour soutenir la couverture.<\/p>\n

Platelage en b\u00e9ton<\/em><\/h4>\n

Les platelages en b\u00e9ton doivent \u00eatre lisses et enti\u00e8rement durcis. Il faudra peut-\u00eatre meuler la surface en b\u00e9ton pour supprimer les bavures et les saillies avant d\u2019installer la membrane, ou \u00e9tendre un mat protecteur sur les surfaces rudes. Le b\u00e9ton pr\u00e9fabriqu\u00e9 doit \u00eatre de niveau pour avoir une surface lisse et un \u00e9coulement suffisant des eaux. Dans les syst\u00e8mes enti\u00e8rement attach\u00e9s, on doit jointoyer les joints afin d\u2019emp\u00eacher l\u2019adh\u00e9sif de les p\u00e9n\u00e9trer.<\/p>\n

Bois<\/em><\/h4>\n

On peut coller des membranes thermodurcies directement sur le contreplaqu\u00e9 qui a une \u00e9paisseur minimale de 15,9 mm (5\/8 po). Les planches en bois doivent \u00eatre recouvertes de contreplaqu\u00e9 ou d\u2019un isolant appropri\u00e9 solidement attach\u00e9 au platelage.<\/p>\n

Acier<\/em><\/h4>\n

Tous les platelages doivent \u00eatre propres et secs avant l\u2019installation de la membrane. Les membranes thermodurcies ne peuvent \u00eatre \u00e9tendues directement sur les platelages en acier. Il faut d\u2019abord poser une couche d\u2019isolant appropri\u00e9, de contreplaqu\u00e9 ou de panneaux de gypse pour assurer la mise \u00e0 niveau du platelage.<\/p>\n

Isolant<\/em><\/h4>\n

Il est important d\u2019utiliser uniquement des isolants autoris\u00e9s par le fabricant de la membrane dans le cas de syst\u00e8mes non fix\u00e9s, enti\u00e8rement coll\u00e9s ou m\u00e9caniquement attach\u00e9s. Dans le cas des syst\u00e8mes enti\u00e8rement coll\u00e9s ou m\u00e9caniquement attach\u00e9s, l\u2019isolant est fix\u00e9 sur le platelage au moyen de vis et de rondelles. Le nombre et l\u2019espacement des vis a une importance capitale et celles-ci doivent \u00eatre install\u00e9es conform\u00e9ment aux instructions du fabricant. Dans le cas des syst\u00e8mes enti\u00e8rement coll\u00e9s, le genre de surface de l\u2019isolant est important pour pr\u00e9venir le d\u00e9collement. Les fabricants impriment des listes d\u2019isolants acceptables dans leurs devis. N\u2019utilisez jamais un isolant qui n\u2019a pas \u00e9t\u00e9 approuv\u00e9 par le fabricant de la membrane.<\/p>\n","protected":false},"featured_media":0,"parent":8976,"menu_order":5,"comment_status":"open","ping_status":"closed","template":"","doc_tag":[],"class_list":["post-8988","docs","type-docs","status-publish","hentry"],"acf":[],"yoast_head":"\n7.2.5 Pr\u00e9paration du platelage - Canadian Roofing Contractors Association<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/roofingcanada.com\/fr\/docs\/manuel-de-reference-sur-les-couvertures-au-canada\/chapitre-7-membranes-de-couverture-monocouches\/7-2-membranes-thermodurcies\/7-2-5-preparation-du-platelage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"7.2.5 Pr\u00e9paration du platelage - Canadian Roofing Contractors Association\" \/>\n<meta property=\"og:description\" content=\"Tous les platelages devant \u00eatre recouverts de membranes thermodurcies doivent \u00eatre lisses, propres, secs et suffisamment solides pour soutenir la couverture. 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