{"id":113232,"date":"2026-03-17T09:54:45","date_gmt":"2026-03-17T08:54:45","guid":{"rendered":"https:\/\/batijournal.com\/?p=113232"},"modified":"2026-03-17T13:11:22","modified_gmt":"2026-03-17T12:11:22","slug":"siege-du-cnes-une-facade-restauree-et-reinterpretee","status":"publish","type":"post","link":"https:\/\/batijournal.com\/index.php\/siege-du-cnes-une-facade-restauree-et-reinterpretee\/113232\/","title":{"rendered":"Si\u00e8ge du CNES : une fa\u00e7ade restaur\u00e9e et r\u00e9interpr\u00e9t\u00e9e"},"content":{"rendered":"<p>Au c\u0153ur du 1er arrondissement de Paris, le si\u00e8ge historique du <span class=\"s1\">CNES<\/span> fait l\u2019objet d\u2019une r\u00e9novation lourde men\u00e9e par <span class=\"s1\">GA Smart Building<\/span>. L\u2019op\u00e9ration, r\u00e9alis\u00e9e pour le compte du propri\u00e9taire <span class=\"s1\">Gecina<\/span>, redonne lisibilit\u00e9 et performance \u00e0 un immeuble tertiaire des ann\u00e9es 1980, tout en requalifiant profond\u00e9ment son enveloppe.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-113233\" src=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/03\/image-20260310160336069-84fcd7fa-a2bf-4fe0-99a6-c818b0c9bdda.jpg\" alt=\"\" width=\"383\" height=\"510\" srcset=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/03\/image-20260310160336069-84fcd7fa-a2bf-4fe0-99a6-c818b0c9bdda.jpg 383w, https:\/\/batijournal.com\/wp-content\/uploads\/2026\/03\/image-20260310160336069-84fcd7fa-a2bf-4fe0-99a6-c818b0c9bdda-225x300.jpg 225w, https:\/\/batijournal.com\/wp-content\/uploads\/2026\/03\/image-20260310160336069-84fcd7fa-a2bf-4fe0-99a6-c818b0c9bdda-113x150.jpg 113w\" sizes=\"(max-width: 383px) 100vw, 383px\" \/><\/p>\n<h4 class=\"p1\">Une fa\u00e7ade conserv\u00e9e et r\u00e9interpr\u00e9t\u00e9e<\/h4>\n<p class=\"p1\">L\u2019intervention s\u2019appuie sur une approche de transformation qui conserve les fondamentaux de l\u2019\u00e9criture d\u2019origine. La <span class=\"s3\">pierre de fa\u00e7ade et la mod\u00e9nature existante<\/span> ont ainsi \u00e9t\u00e9 pr\u00e9serv\u00e9es et restaur\u00e9es, dans une logique de continuit\u00e9 architecturale.<\/p>\n<p class=\"p1\">Ce travail de conservation s\u2019accompagne d\u2019une <span class=\"s3\">recomposition des \u00e9l\u00e9ments d\u2019interface avec l\u2019espace public<\/span>. Le mur rideau, les acc\u00e8s et le parvis ont \u00e9t\u00e9 enti\u00e8rement redessin\u00e9s afin d\u2019am\u00e9liorer la perception du b\u00e2timent dans son environnement imm\u00e9diat, \u00e0 proximit\u00e9 du Forum des Halles et de l\u2019\u00e9glise Saint-Eustache.<\/p>\n<p class=\"p1\">L\u2019op\u00e9ration joue ainsi sur un double registre : <span class=\"s3\">valorisation du mat\u00e9riau existant<\/span> et <span class=\"s3\">actualisation de l\u2019image architecturale<\/span>, dans un contexte urbain dense et contraint.<\/p>\n<h2 class=\"p1\">Une enveloppe au service de la performance<\/h2>\n<p class=\"p1\">Au-del\u00e0 de son expression architecturale, l\u2019enveloppe a \u00e9t\u00e9 un levier majeur d\u2019am\u00e9lioration \u00e9nerg\u00e9tique. Le projet int\u00e8gre une <span class=\"s3\">isolation par l\u2019int\u00e9rieur<\/span> et le <span class=\"s3\">remplacement des menuiseries<\/span>, contribuant \u00e0 une mont\u00e9e en performance globale du b\u00e2timent.<\/p>\n<p class=\"p1\">Le recours \u00e0 des <span class=\"s3\">mat\u00e9riaux disposant de FDES class\u00e9es A ou A+<\/span>, ainsi qu\u2019\u00e0 des produits issus de l\u2019\u00e9conomie circulaire, participe \u00e0 la r\u00e9duction de l\u2019empreinte environnementale de l\u2019op\u00e9ration.<\/p>\n<p class=\"p1\">Cette approche permet d\u2019atteindre la certification <span class=\"s3\">HQE B\u00e2timent R\u00e9novation V1 niveau \u00ab Excellent \u00bb<\/span>, tout en r\u00e9pondant aux exigences du d\u00e9cret tertiaire.<\/p>\n<h2 class=\"p1\">Une requalification globale du b\u00e2timent<\/h2>\n<p class=\"p1\">La transformation de l\u2019enveloppe s\u2019inscrit dans une reconfiguration plus large du b\u00e2timent, visant \u00e0 am\u00e9liorer les usages et la qualit\u00e9 des espaces.<\/p>\n<p class=\"p1\">L\u2019organisation int\u00e9rieure a \u00e9t\u00e9 restructur\u00e9e autour d\u2019un <span class=\"s3\">patio central<\/span>, apportant lumi\u00e8re naturelle et profondeur aux plateaux. Les niveaux ont \u00e9t\u00e9 d\u00e9cloisonn\u00e9s pour accueillir des espaces de travail contemporains, tandis que le hall d\u2019entr\u00e9e a \u00e9t\u00e9 repens\u00e9 avec une mise en sc\u00e8ne lumineuse inspir\u00e9e de l\u2019univers spatial.<\/p>\n<p class=\"p1\">En toiture, un <span class=\"s3\">rooftop paysager de 700 m\u00b2<\/span> prolonge cette d\u00e9marche, en introduisant une dimension \u00e9cologique et en favorisant la biodiversit\u00e9 en c\u0153ur de ville.<\/p>\n<h2 class=\"p1\">Une op\u00e9ration men\u00e9e en site occup\u00e9<\/h2>\n<p class=\"p1\">Le chantier a \u00e9t\u00e9 conduit en <span class=\"s3\">site contraint<\/span>, avec le maintien en activit\u00e9 des commerces en rez-de-chauss\u00e9e pendant toute la dur\u00e9e des travaux. Cette contrainte a n\u00e9cessit\u00e9 un phasage sp\u00e9cifique, int\u00e9gr\u00e9 d\u00e8s la conception.<\/p>\n<p class=\"p1\">Livr\u00e9e en <span class=\"s3\">18 mois<\/span>, l\u2019op\u00e9ration illustre la capacit\u00e9 des acteurs de la r\u00e9novation \u00e0 intervenir sur des actifs tertiaires complexes, en conciliant contraintes urbaines, performance technique et qualit\u00e9 architecturale.<\/p>\n<p class=\"p1\"><b>Fiche projet<\/b><\/p>\n<ul>\n<li class=\"p4\"><b>Op\u00e9ration : <\/b><b><\/b>R\u00e9novation lourde du si\u00e8ge social du CNES<\/li>\n<li class=\"p4\"><b>Localisation : <\/b><b><\/b>2 place Maurice-Quentin, Paris 1er<\/li>\n<li class=\"p4\"><b>Surface : <\/b>9 200 m\u00b2<\/li>\n<li class=\"p4\"><b>Rooftop : <\/b><b><\/b>700 m\u00b2<\/li>\n<li class=\"p4\"><b>Ma\u00eetrise d\u2019ouvrage (locataire) :\u00a0<\/b><b><\/b><span class=\"s4\">CNES<\/span><\/li>\n<li class=\"p4\"><b>Propri\u00e9taire: <\/b><b><\/b><span class=\"s4\">Gecina<\/span><\/li>\n<li class=\"p4\"><b>Montage : <\/b><b><\/b>March\u00e9 public de conception-r\u00e9alisation<\/li>\n<li class=\"p4\"><b>Mandataire :\u00a0<\/b><b><\/b><span class=\"s4\">GA Smart Building<\/span><\/li>\n<li class=\"p4\"><b>Architecte :\u00a0<\/b><span class=\"s4\">SK&amp;Associ\u00e9s Architectes<\/span><\/li>\n<li class=\"p4\"><b>Bureau d\u2019\u00e9tudes :\u00a0<\/b><b><\/b><span class=\"s4\">Artelia<\/span><\/li>\n<li class=\"p4\"><b>Acousticien :\u00a0<\/b><b><\/b><span class=\"s4\">Gamba<\/span><\/li>\n<li class=\"p4\"><b>Dur\u00e9e des travaux : <\/b><b><\/b>18 mois (septembre 2024 \u2013 mars 2026)<\/li>\n<li class=\"p4\"><b>Certification : <\/b>HQE B\u00e2timent R\u00e9novation V1 \u2013 niveau \u00ab Excellent \u00bb<\/li>\n<\/ul>\n<p>Photos \u00a9 Epaillard Machado<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Au c\u0153ur du 1er arrondissement de Paris, le si\u00e8ge historique du CNES fait l\u2019objet d\u2019une r\u00e9novation lourde men\u00e9e par GA Smart Building. L\u2019op\u00e9ration, r\u00e9alis\u00e9e pour le compte du propri\u00e9taire Gecina, redonne lisibilit\u00e9 et performance \u00e0 un immeuble tertiaire des ann\u00e9es 1980, tout en requalifiant profond\u00e9ment son enveloppe.<\/p>\n","protected":false},"author":1,"featured_media":113231,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[10736,10530],"tags":[],"class_list":["post-113232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Si\u00e8ge du CNES : une fa\u00e7ade restaur\u00e9e et r\u00e9interpr\u00e9t\u00e9e<\/title>\n<meta name=\"description\" content=\"Au c\u0153ur du 1er arrondissement de Paris, le si\u00e8ge historique du CNES fait l\u2019objet d\u2019une r\u00e9novation lourde men\u00e9e par GA Smart Building. L\u2019op\u00e9ration, r\u00e9alis\u00e9e pour le compte du propri\u00e9taire Gecina, redonne lisibilit\u00e9 et performance \u00e0 un immeuble tertiaire des ann\u00e9es 1980, tout en requalifiant profond\u00e9ment son enveloppe.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/batijournal.com\/index.php\/siege-du-cnes-une-facade-restauree-et-reinterpretee\/113232\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Si\u00e8ge du CNES : une fa\u00e7ade restaur\u00e9e et r\u00e9interpr\u00e9t\u00e9e\" \/>\n<meta property=\"og:description\" content=\"Au c\u0153ur du 1er arrondissement de Paris, le si\u00e8ge historique du CNES fait l\u2019objet d\u2019une r\u00e9novation lourde men\u00e9e par GA Smart Building. 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