{"id":51476,"date":"2026-04-02T10:32:31","date_gmt":"2026-04-02T09:32:31","guid":{"rendered":"https:\/\/www.deschacht.eu\/project\/retentiedak-als-slimme-waterbuffer-in-de-stad\/"},"modified":"2026-04-02T10:43:47","modified_gmt":"2026-04-02T09:43:47","slug":"une-toiture-de-retention-comme-solution-intelligente-de-gestion-de-leau-en-ville","status":"publish","type":"portfolio","link":"https:\/\/www.deschacht.eu\/fr\/project\/une-toiture-de-retention-comme-solution-intelligente-de-gestion-de-leau-en-ville\/","title":{"rendered":"Une toiture de r\u00e9tention comme solution intelligente de gestion de l\u2019eau en ville"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text css=&#8221;&#8221;]Dans des environnements urbains denses, la gestion efficace des eaux pluviales devient de plus en plus importante. Dans le cadre d\u2019un projet de nouvelle construction \u00e0 Molenbeek, l\u2019entrepreneur BOUD met en \u0153uvre une solution innovante : une toiture de r\u00e9tention qui capte et stocke temporairement l\u2019eau de pluie. Pour ce projet, \u00ab De\u00a0Brug\u00a0\u00bb,\u00a0Deschacht\u00a0a fourni le syst\u00e8me permettant la gestion de l\u2019eau sur la toiture plate.<\/p>\n<h3><strong>Gestion de l\u2019eau en toiture <\/strong><\/h3>\n<p>Pour ce projet,\u00a0Deschacht\u00a0a livr\u00e9 134 caissons de r\u00e9tention avec tous les accessoires n\u00e9cessaires. Ensemble, ils assurent une capacit\u00e9 de stockage d\u2019environ 3 000 litres d\u2019eau de pluie sur la toiture plate du b\u00e2timent.<\/p>\n<p>Au-dessus du syst\u00e8me de r\u00e9tention, une toiture v\u00e9g\u00e9talis\u00e9e sera install\u00e9e ult\u00e9rieurement. Cela permettra de cr\u00e9er une toiture dite\u00a0bleu-verte\u00a0(toiture combin\u00e9e). Le principe est simple mais efficace : l\u2019eau de pluie est d\u2019abord collect\u00e9e et temporairement stock\u00e9e dans les caissons de r\u00e9tention, puis elle est \u00e9vacu\u00e9e de mani\u00e8re progressive.<\/p>\n<p>Ainsi, l\u2019eau n\u2019est pas directement envoy\u00e9e vers les \u00e9gouts, mais lib\u00e9r\u00e9e de fa\u00e7on contr\u00f4l\u00e9e.<\/p>\n<h3><strong>Une solution pour les projets urbains<\/strong><\/h3>\n<p>Dans les zones urbaines, l\u2019espace pour des bassins de r\u00e9tention classiques ou des dispositifs d\u2019infiltration est souvent limit\u00e9. Une toiture de r\u00e9tention constitue alors une alternative int\u00e9ressante, car la gestion de l\u2019eau se fait directement au niveau du toit.<\/p>\n<p>Cela pr\u00e9sente plusieurs avantages :<br \/>\n\u2022 r\u00e9duction des pics de charge sur le r\u00e9seau d\u2019\u00e9gouttage,<br \/>\n\u2022 stockage temporaire des eaux pluviales,<br \/>\n\u2022 \u00e9vacuation contr\u00f4l\u00e9e et retard\u00e9e,<br \/>\n\u2022 combinaison avec des toitures v\u00e9g\u00e9talis\u00e9es pour une meilleure absorption de l\u2019eau et un effet rafra\u00eechissement.<\/p>\n<p>Cette mani\u00e8re de stocker l\u2019eau est encore peu r\u00e9pandue dans les projets de construction priv\u00e9s. Pourtant, dans un contexte urbain, une toiture de r\u00e9tention peut s\u2019av\u00e9rer une solution tr\u00e8s efficace pour g\u00e9rer les eaux pluviales localement.<\/p>\n<p>En accord avec la politique flamande en mati\u00e8re d\u2019eaux pluviales<br \/>\nL\u2019installation de toitures de r\u00e9tention s\u2019inscrit parfaitement dans la politique de gestion des eaux pluviales du gouvernement flamand. Les nouveaux projets de construction et de r\u00e9novation doivent de plus en plus miser sur le stockage local, la r\u00e9utilisation et l\u2019infiltration des eaux de pluie, conform\u00e9ment \u00e0 la r\u00e9cente r\u00e9glementation en la mati\u00e8re.<\/p>\n<p>En stockant temporairement l\u2019eau en toiture et en la lib\u00e9rant de mani\u00e8re diff\u00e9r\u00e9e, ce type de syst\u00e8me contribue \u00e0 pr\u00e9venir la surcharge du r\u00e9seau d\u2019\u00e9gouttage lors de fortes pluies, \u00e0 retenir plus longtemps l\u2019eau localement et \u00e0\u00a0limiter les risques d\u2019inondations urbaines.<\/p>\n<p>Avec ce projet \u00e0 Molenbeek, BOUD d\u00e9montre comment des solutions de toiture innovantes peuvent \u00e9galement contribuer \u00e0 une gestion durable de l\u2019eau en milieu urbain.[\/vc_column_text]<style type=\"text\/css\" >#b_7uf10ksbxqjldi8685k9 a{color:#ffffff; background:#082C5D; margin-top:px; margin-bottom:px;  margin-left:px; margin-right:px; font-weight:700; border-radius:8px;}#b_7uf10ksbxqjldi8685k9 a:hover{color:#ffffff ; background:#FCF6E3 ;}<\/style><div class=\"ta_left tf_btn_pos\" id=\"b_7uf10ksbxqjldi8685k9\" ><a class=\"rd_normal_bt medium_rd_bt bt_icon_right   \" href=\"https:\/\/www.deschacht.eu\/fr\/contact-toiture\/\" target=\"yes\"   ><span>Contactez notre \u00e9quipe de toiture<\/span><i class=\"fa-arrow-right\" ><\/i><\/a><\/div><style type='text\/css'> @font-face{font-family: 'fa'; src:url('https:\/\/www.deschacht.eu\/wp-content\/themes\/deschacht\/includes\/4k-icons\/icons\/4k-icons-pack02\/icons\/fonts\/fa.eot'); src:url('https:\/\/www.deschacht.eu\/wp-content\/themes\/deschacht\/includes\/4k-icons\/icons\/4k-icons-pack02\/icons\/fonts\/fa.eot?#iefix') format('embedded-opentype'), url('https:\/\/www.deschacht.eu\/wp-content\/themes\/deschacht\/includes\/4k-icons\/icons\/4k-icons-pack02\/icons\/fonts\/fa.woff') format('woff'), url('https:\/\/www.deschacht.eu\/wp-content\/themes\/deschacht\/includes\/4k-icons\/icons\/4k-icons-pack02\/icons\/fonts\/fa.ttf') format('truetype'), url('https:\/\/www.deschacht.eu\/wp-content\/themes\/deschacht\/includes\/4k-icons\/icons\/4k-icons-pack02\/icons\/fonts\/fa.svg#oi') format('svg'); font-weight: normal; font-style: normal;}#b_7uf10ksbxqjldi8685k9 .fa-arrow-right:before{font-family: 'fa'; font-weight: normal; font-style: normal;}#b_7uf10ksbxqjldi8685k9 .fa-arrow-right:before{content: \"\\f061\";}<\/style>\n[\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_row_inner][vc_column_inner css=&#8221;.vc_custom_1773742280172{background-color: #f5f7f9 !important;border-radius: 10px !important;}&#8221;][vc_column_text css=&#8221;.vc_custom_1775122895035{padding-top: 30px !important;padding-right: 30px !important;padding-bottom: 30px !important;padding-left: 30px !important;}&#8221;]\n<h3><span style=\"color: #082c5d;\"> Produits:<\/span><\/h3>\n<p><a href=\"https:\/\/shop.deschacht.eu\/fr-fr\/couch-de-drainage-et-tampon\/produits\/25238\">\u2794 Caissons de r\u00e9tention <\/a>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=&#8221;60px&#8221;][\/vc_column][\/vc_row][vc_row][vc_column]<div class=\"rd_img_gallery_ctn clearfix\" style=\"margin:0px auto 0px;\"><a class=\"ig_col_3 \" href=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6055-scaled-1024x768.jpeg\"  rel=\"prettyPhoto[rel-1454942554]\" ><img decoding=\"async\" class=\"\" src=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6055-scaled-300x200.jpeg\" width=\"300\" height=\"200\" alt=\"IMG_6055\" title=\"IMG_6055\" loading=\"lazy\" \/><\/a><a class=\"ig_col_3 \" href=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6056-scaled-768x1024.jpeg\"  rel=\"prettyPhoto[rel-1454942554]\" ><img decoding=\"async\" class=\"\" src=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6056-scaled-300x200.jpeg\" width=\"300\" height=\"200\" alt=\"retentiedak\" title=\"IMG_6056\" loading=\"lazy\" \/><\/a><a class=\"ig_col_3 \" href=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6059-scaled-768x1024.jpeg\"  rel=\"prettyPhoto[rel-1454942554]\" ><img decoding=\"async\" class=\"\" src=\"https:\/\/www.deschacht.eu\/wp-content\/uploads\/2026\/04\/IMG_6059-scaled-300x200.jpeg\" width=\"300\" height=\"200\" alt=\"Retentiedak\" title=\"IMG_6059\" loading=\"lazy\" \/><\/a><\/div>[\/vc_column][\/vc_row][vc_row type=&#8221;full-width-section&#8221; el_class=&#8221;blokkendoelgroepen&#8221; css=&#8221;.vc_custom_1681304880071{padding-top: 50px !important;padding-bottom: 50px !important;}&#8221;][vc_column][vc_empty_space height=&#8221;70px&#8221;][vc_column_text css=&#8221;.vc_custom_1775122927556{margin-bottom: 15px !important;}&#8221;]\n<h2>Voir aussi les autres r\u00e9alisations<\/h2>\n[\/vc_column_text][vc_empty_space height=&#8221;10px&#8221;]<script>jQuery.noConflict(); var $ = jQuery; <\/script><div id=\"randompz6prpehuhws74x69lge_port\" class=\"portfolio\"><style type=\"text\/css\" >#randompz6prpehuhws74x69lge_port .filter_type_1 #options .selected a,#randompz6prpehuhws74x69lge_port .filter_type_1 #options a:hover{background:#b88c0d; border:1px solid #b88c0d; color:#fff;}#randompz6prpehuhws74x69lge_port .filter_type_1 #options a{border:1px solid #ededed}#randompz6prpehuhws74x69lge_port .filter_type_1 #options a{background:#ffffff}#randompz6prpehuhws74x69lge_port .filter_type_1 #options a{color:#333333}<\/style><style type=\"text\/css\" >#randompz6prpehuhws74x69lge_port .ico_link{background:!important;}<\/style><style type=\"text\/css\" >#randompz6prpehuhws74x69lge_port .filter_img{border:1px solid #efefef; border-bottom:none;}#randompz6prpehuhws74x69lge_port .port_item_details{border:1px solid #efefef; 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