{"id":30724,"date":"2019-06-04T14:54:20","date_gmt":"2019-06-04T12:54:20","guid":{"rendered":"http:\/\/136.144.181.85\/~nedzink\/infos-conseils\/notions-de-physique-de-la-construction\/diffusion-de-vapeur\/"},"modified":"2019-06-04T14:54:20","modified_gmt":"2019-06-04T12:54:20","slug":"diffusion-de-vapeur","status":"publish","type":"page","link":"https:\/\/www.nedzink.com\/fr\/diffusion-de-vapeur\/","title":{"rendered":"Diffusion de vapeur"},"content":{"rendered":"<p>\n\tLes toitures et fa&ccedil;ades sont soumises &agrave; des forces m&eacute;caniques mais aussi &agrave; des &eacute;l&eacute;ments physiques comme les fluctuations de temp&eacute;ratures (entre &#8211; 20 &deg;c et + 80 &deg;c) ou les diff&eacute;rences d&rsquo;hygrom&eacute;trie entre l&rsquo;int&eacute;rieur et l&rsquo;ext&eacute;rieur.<\/p>\n<p>\n\tDans le cas le plus courant, &agrave; savoir lorsque la temp&eacute;rature int&eacute;rieure est plus &eacute;lev&eacute;e (ti) et la temp&eacute;rature ext&eacute;rieure plus basse (te), l&rsquo;humidit&eacute; de l&rsquo;air est plus &eacute;lev&eacute;e &agrave; l&rsquo;int&eacute;rieur qu&rsquo;&agrave; l&rsquo;ext&eacute;rieur. Sous l&rsquo;influence de la diff&eacute;rence de pression de vapeur d&rsquo;eau (Pi-Pe), de la vapeur d&rsquo;eau tente de s&rsquo;&eacute;chapper de l&rsquo;int&eacute;rieur vers l&rsquo;ext&eacute;rieur en traversant la toiture.<\/p>\n<p>\n\tUne mauvaise construction d&rsquo;un point de vue physique de la toiture\/fa&ccedil;ade entra&icirc;ne la formation de condensation et de givre sur la face interne du zinc, qui est relativement froide.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les toitures et fa&ccedil;ades sont soumises &agrave; des forces m&eacute;caniques mais aussi &agrave; des &eacute;l&eacute;ments physiques comme les fluctuations de temp&eacute;ratures (entre &#8211; 20 &deg;c et + 80 &deg;c) ou les diff&eacute;rences d&rsquo;hygrom&eacute;trie entre l&rsquo;int&eacute;rieur et l&rsquo;ext&eacute;rieur. Dans le cas le plus courant, &agrave; savoir lorsque la temp&eacute;rature int&eacute;rieure est plus &eacute;lev&eacute;e (ti) et la [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"parent":0,"menu_order":670,"comment_status":"closed","ping_status":"closed","template":"template-import.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-30724","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Diffusion de vapeur &#8211; NedZink<\/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:\/\/www.nedzink.com\/fr\/diffusion-de-vapeur\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diffusion de vapeur &#8211; NedZink\" \/>\n<meta property=\"og:description\" content=\"Les toitures et fa&ccedil;ades sont soumises &agrave; des forces m&eacute;caniques mais aussi &agrave; des &eacute;l&eacute;ments physiques comme les fluctuations de temp&eacute;ratures (entre &#8211; 20 &deg;c et + 80 &deg;c) ou les diff&eacute;rences d&rsquo;hygrom&eacute;trie entre l&rsquo;int&eacute;rieur et l&rsquo;ext&eacute;rieur. 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