{"id":1168,"date":"2026-04-23T09:26:08","date_gmt":"2026-04-23T09:26:08","guid":{"rendered":"https:\/\/sleepy-hofstadter.94-76-228-222.plesk.page\/applicazioni\/non-treadable-inverted-roof\/"},"modified":"2026-09-08T07:03:55","modified_gmt":"2026-09-08T07:03:55","slug":"non-treadable-inverted-roof","status":"publish","type":"applicazione","link":"https:\/\/sleepy-hofstadter.94-76-228-222.plesk.page\/en\/applications\/non-treadable-inverted-roof\/","title":{"rendered":"Non-treadable inverted roof insulation"},"content":{"rendered":"<p class=\"isSelectedEnd\">A <strong>non-treadable inverted roof<\/strong> is a flat-roof construction in which the thermal insulation is installed above the waterproofing membrane, reversing the conventional sequence of a warm roof. In this configuration, the waterproofing layer remains beneath the insulation and is therefore protected from direct exposure and temperature variations.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"isSelectedEnd\"><strong>Extruded polystyrene (XPS)<\/strong> is particularly suited to inverted roof applications because of its combination of high compressive strength, low water absorption and suitability for exposure to the conditions occurring above the waterproofing layer.<\/p>\n<p class=\"isSelectedEnd\">For non-treadable roofs, the XPS insulation is typically protected by a <strong>filter\/separation layer and a ballast layer<\/strong>, commonly washed gravel. The ballast protects the insulation from direct UV exposure and contributes to keeping the roof build-up stable against wind-induced uplift.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"isSelectedEnd\"><strong>X-FOAM\u00ae HBT<\/strong> boards, with their shiplap edges and compressive strength of \u2265 300 kPa, are suitable for this type of application. The insulation is installed above the waterproofing layer, creating a continuous thermal layer while the membrane performs the waterproofing function beneath it.<\/p>\n<p>Because rainwater can penetrate between and beneath the insulation boards in an inverted roof, the effect of rainwater flow on thermal performance must be considered when determining the required insulation thickness.<\/p>\n","protected":false},"author":1,"featured_media":3261,"template":"","meta":{"_yoast_wpseo_focuskw":"non-treadable inverted roof insulation","_yoast_wpseo_title":"Non-Treadable Inverted Roof Insulation with XPS | Ediltec Isulation","_yoast_wpseo_metadesc":"Discover how to insulate a non-treadable inverted roof with XPS, protecting the waterproofing membrane and improving the roof\u2019s performance","id_tipo":"6","id_traduzione":"","titolo":"","testo":"","ordine":"0","visibile":"1","immagine":"","prodotti_consigliati":"6_EN | 11_EN","seo_link":"non-treadable-inverted-roof","seo_title":"","seo_keywords":"","seo_description":"","_bridge_tax_data":"[]","_bridge_imported":"1","_bridge_source":"laravel_bridge","meta_vantaggi":"<p class=\"isSelectedEnd\">The distinctive advantage of an inverted roof is the position of the insulation <strong>above the waterproofing membrane<\/strong>. This configuration provides thermal insulation while also protecting the waterproofing layer within the roof build-up.<\/p>\r\n\r\n<ul>\r\n \t<li>The waterproofing membrane is <strong>protected by the overlying insulation<\/strong> from direct exposure and mechanical disturbance from the upper roof layers.<\/li>\r\n \t<li>XPS provides the <strong>low water absorption and mechanical performance<\/strong> required for an insulation layer positioned above the waterproofing.<\/li>\r\n \t<li>The ballast layer protects the insulation from <strong>UV exposure<\/strong> and contributes to stability against wind uplift.<\/li>\r\n \t<li>Shiplap-edge XPS boards help create a <strong>continuous insulation layer<\/strong> across the roof surface.<\/li>\r\n \t<li>The system allows the insulation boards to be installed without bonding them directly to the waterproofing membrane when the specified roof system permits loose laying and adequate ballast is provided.<\/li>\r\n<\/ul>\r\nThe inverted configuration is therefore particularly suitable when the design requires the waterproofing membrane to remain protected beneath the thermal insulation.","meta_posa_opera":"<p class=\"isSelectedEnd\">Installation begins with a <strong>continuous and correctly installed waterproofing layer<\/strong> over the roof substrate. Before laying the insulation, the waterproofing should be complete and the surface suitable for receiving the XPS boards.<\/p>\r\n<p class=\"isSelectedEnd\"><strong>X-FOAM\u00ae HBT boards are laid above the waterproofing membrane<\/strong>, with adjacent shiplap edges accurately fitted together. The boards should be arranged to create a continuous insulation layer, avoiding unnecessary gaps between adjacent elements.<\/p>\r\n<p class=\"isSelectedEnd\">A suitable <strong>filter\/separation layer<\/strong> is then installed above the XPS insulation before the ballast layer.<\/p>\r\n<p class=\"isSelectedEnd\">Finally, the roof surface is completed with the specified <strong>washed-gravel ballast<\/strong>. The ballast must be distributed uniformly and designed in sufficient quantity to provide the protection and stability required by the roof system, including resistance to wind uplift.<\/p>\r\n&nbsp;\r\n<p class=\"isSelectedEnd\">The roof drainage system must remain functional throughout the build-up, and outlets and drainage paths must not be obstructed by the insulation, separation layer or ballast.<\/p>\r\nSpecific detailing at roof edges, penetrations, drains and other discontinuities should follow the waterproofing and roof-system design.","meta_avvertenze":"In this type of application, thermal insulation is exposed to bad weather and rainwater, which, as it runs off the roof, reduces the thermal insulation value. During planning, a coefficient is to be applied to take this into account.","tipo":"","_bridge_import_key":"6_applicazione_EN","id_nota_tecnica":"","id_download":"","file_pdf":0,"id_comunicazione":"","data":"","anno":"","prefisso":"","img":"","id_news":"","alt_text":"","top":"","link":"","link_click":"","galleriaMedia_news":"","id_prodotto":"","_sku":"","nuovo":"","brochure_pdf":0,"certificazione_pdf":0,"proprieta":"","titolo_applicazione_parent":"","brochure":"","titolo_en":"","click":"","seo_link_salva":"","alt_text_salva":"","galleria_media":"","_product_image_gallery":"","certificazioni_pdf":0,"lingua":"","Matchi_en":"","brochure_link":"","certificazione_link":"","_regular_price":"","_sale_price":"","_price":"","_stock":"","_stock_status":"","_sale_price_dates_from":"","_sale_price_dates_to":"","galleria_captions":"","immagine_didascalia":"","_bridge_translation_key":""},"tags":[2290,2284,2287,2282,2283,2288,2285,2029,2286,2289,2027],"applicazioni":[946],"class_list":["post-1168","applicazione","type-applicazione","status-publish","has-post-thumbnail","hentry","tag-extruded-polystyrene","tag-flat-roof-insulation","tag-gravel-ballast","tag-inverted-roof","tag-inverted-roof-insulation","tag-non-treadable-inverted-roof","tag-roof-thermal-insulation","tag-thermal-insulation","tag-waterproofing-membrane","tag-x-foam-hbt","tag-xps-insulation","applicazioni-inverted-roof"],"yoast_head":"<!-- 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