{"id":118318,"date":"2026-03-19T08:55:18","date_gmt":"2026-03-19T08:55:18","guid":{"rendered":"https:\/\/winklerchimica.com\/?p=118318"},"modified":"2026-03-31T18:57:59","modified_gmt":"2026-03-31T18:57:59","slug":"easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution","status":"publish","type":"post","link":"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/","title":{"rendered":"Easy to Renovate, Hard to Waterproof: The Hybrid System Revolution"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Index<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#Easy_to_Renovate_Hard_to_Waterproof\" >Easy to Renovate, Hard to Waterproof<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#What_Are_Hybrid_Waterproofing_Systems\" >What Are Hybrid Waterproofing Systems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#Key_Advantages_of_Hybrid_Systems\" >Key Advantages of Hybrid Systems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#Practical_Case_Study_Restoration_of_a_Weather-Exposed_Terrace\" >Practical Case Study: Restoration of a Weather-Exposed Terrace<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#How_to_Choose_the_Right_Bituminous_Membrane\" >How to Choose the Right Bituminous Membrane<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#How_to_Choose_the_Right_Liquid_System\" >How to Choose the Right Liquid System<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#Step-by-Step_Application\" >Step-by-Step Application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#Conclusions\" >Conclusions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/winklerchimica.com\/en\/easy-to-renovate-hard-to-waterproof-the-hybrid-system-revolution\/#FAQ_%E2%80%93_Frequently_Asked_Questions\" >FAQ \u2013 Frequently Asked Questions<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Easy_to_Renovate_Hard_to_Waterproof\"><\/span>Easy to Renovate, Hard to Waterproof<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In modern construction, most projects involve the renovation of existing buildings, characterised by highly heterogeneous materials and construction techniques. While renovation is often straightforward, achieving correct waterproofing remains one of the most complex challenges on site.<\/p>\n\n\n\n<p>Thresholds, corners, upstands, and delicate materials make traditional systems difficult to apply. Yet water protection remains essential to guarantee durability, safety, and the long-term value of the structure.<\/p>\n\n\n\n<p>This is where hybrid waterproofing systems come in \u2014 combining prefabricated bituminous membranes with liquid membranes, delivering both speed of installation and maximum adaptability to complex details.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_Hybrid_Waterproofing_Systems\"><\/span>What Are Hybrid Waterproofing Systems<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A hybrid system integrates two complementary technologies:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prefabricated bituminous membrane<\/strong> \u2192 fast and effective on large surfaces<\/li>\n\n\n\n<li><strong>Liquid membrane<\/strong> \u2192 ideal for complex details, thresholds, corners, and junctions<\/li>\n<\/ul>\n\n\n\n<p>The goal is to leverage the strengths of both: productivity on large areas and precision on critical construction details.<\/p>\n\n\n\n<p>In practice, during many renovations windows and doors are replaced while thresholds and substrates remain in place. In these areas, hot-applied bitumen is not applicable, making elastic and continuous liquid solutions essential.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Advantages_of_Hybrid_Systems\"><\/span>Key Advantages of Hybrid Systems<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fast execution on large surfaces<\/li>\n\n\n\n<li>Application flexibility on critical details<\/li>\n\n\n\n<li>Continuous waterproofing without interruptions<\/li>\n\n\n\n<li>High durability and resistance to weathering<\/li>\n\n\n\n<li>Compliance with technical standards and best practice<\/li>\n<\/ul>\n\n\n\n<p><em>&#8220;Integrating different technologies means selecting each product based on the specific detail to be solved, rather than forcing a single solution onto every situation&#8221;<\/em>, notes Leonardo Castelvecchio, Winkler technical sales consultant and chairman of the PML group technical committee.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Practical_Case_Study_Restoration_of_a_Weather-Exposed_Terrace\"><\/span>Practical Case Study: Restoration of a Weather-Exposed Terrace<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In the refurbishment of terraces and accessible roofs, thresholds are often the weakest point in the system.<\/p>\n\n\n\n<p>Historically in Italy, polymer-modified bituminous membranes applied by torch have been the standard \u2014 a highly reliable solution on large surfaces, but difficult to apply on delicate elements or areas subject to wear. This can result in unprotected zones or incorrect installation.<\/p>\n\n\n\n<p>The solution is a hybrid system that allows each individual detail to be addressed with a product specifically designed for that application:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>EXPERTA 400<\/strong> bituminous membrane for the main surface<\/li>\n\n\n\n<li><strong>ONE\u00ae<\/strong> liquid membrane for thresholds and critical details<\/li>\n\n\n\n<li><strong>BC SEAL BAND<\/strong> accessories for corners and junctions<\/li>\n<\/ul>\n\n\n\n<p>Result: complete waterproofing without compromising aesthetics or functionality.<\/p>\n\n\n\n<p><em>&#8220;When it comes to large roof surfaces, bituminous membranes are still the safest choice&#8221;<\/em>, explains Riccardo Villani, Winkler consultant and national reference in the waterproofing sector. <em>&#8220;The difference lies in the details \u2014 that&#8217;s where you need materials capable of adapting to the geometry of the substrate. This is why hybrid systems are today the most advanced solution available.&#8221;<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Choose_the_Right_Bituminous_Membrane\"><\/span>How to Choose the Right Bituminous Membrane<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The choice depends on the intended use of the roof and the expected mechanical stresses.<\/p>\n\n\n\n<p>For a walkable terrace, the system must be resistant to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Screed loads<\/li>\n\n\n\n<li>Foot traffic<\/li>\n\n\n\n<li>Puncture<\/li>\n\n\n\n<li>Thermal shock<\/li>\n<\/ul>\n\n\n\n<p>The optimal solution involves a double layer of <strong>EXPERTA 400<\/strong> at 4 mm, compliant with EN 13707 for applications under heavy protection, featuring:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Polyolefin-modified bitumen (flexibility down to \u221220\u00b0C, heat resistance up to 140\u00b0C)<\/li>\n\n\n\n<li>High-weight polyester reinforcement<\/li>\n\n\n\n<li>High stability and long-term durability<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Choose_the_Right_Liquid_System\"><\/span>How to Choose the Right Liquid System<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For thresholds and details, the following factors must be assessed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nature of the substrate<\/li>\n\n\n\n<li>Presence of residual moisture<\/li>\n\n\n\n<li>UV exposure<\/li>\n\n\n\n<li>Need for a visible, walkable finish<\/li>\n<\/ul>\n\n\n\n<p>An elastic, breathable product applicable even on damp substrates is therefore required.<\/p>\n\n\n\n<p>Solutions such as <strong>ONE\u00ae<\/strong> provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Adhesion on heterogeneous materials<\/li>\n\n\n\n<li>Continuous waterproofing<\/li>\n\n\n\n<li>Resistance to weathering<\/li>\n\n\n\n<li>Safe, walkable surface<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step-by-Step_Application\"><\/span>Step-by-Step Application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Bituminous Membrane<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Surface Preparation<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thorough cleaning: removal of loose parts and existing waterproofing residues<\/li>\n\n\n\n<li>Slope verification: if insufficient, build up with <strong>WINPLAN PRO<\/strong> premixed screed to a minimum 1.5% fall<\/li>\n\n\n\n<li>Application of <strong>ECOPRIMER<\/strong> bituminous primer to ensure optimal adhesion<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Installation<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Double layer of EXPERTA 400 applied by torch<\/li>\n\n\n\n<li>Rolls laid perpendicular to the slope to prevent ponding<\/li>\n\n\n\n<li>Second layer offset by half a roll width<\/li>\n\n\n\n<li>Minimum vertical upstands of 15 cm above the finished floor level<\/li>\n<\/ul>\n\n\n\n<p><strong>Advantages:<\/strong> Continuous waterproofing, reduced critical points, and fast installation on large surfaces.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Liquid Membrane<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Surface Preparation<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check cohesion and clean the surface: remove dust, loose materials, and any detaching parts<\/li>\n\n\n\n<li>On friable substrates, apply a consolidating primer such as <strong>WINFIX CONCRETE<\/strong><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Accessory Application<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apply <strong>BC SEAL BAND<\/strong> self-adhesive butyl tape to treat concave angles between wall and floor and around the threshold perimeter<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Liquid Membrane Application<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apply <strong>ONE\u00ae<\/strong> \u2014 a ready-to-use, single-component product \u2014 following the consumption rates indicated in the technical data sheet<\/li>\n\n\n\n<li>Apply evenly until the critical area is fully covered<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><em>Anti-Slip Finish<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Once ONE\u00ae has dried, apply <strong>ONE\u00ae FLOORING<\/strong> as a thin-coat finish<\/li>\n\n\n\n<li>The quartz aggregate incorporated in the product creates the correct surface texture, ensuring mechanical grip and user safety<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><em>System Advantages<\/em><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Effective closure of the detail, fully integrated with the bituminous system<\/li>\n\n\n\n<li>Applicable even on damp or irregular substrates<\/li>\n\n\n\n<li>Anti-slip safety and long-term durability<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusions\"><\/span>Conclusions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Effective waterproofing does not depend on a single product, but on the correct combination of materials.<\/p>\n\n\n\n<p>Even apparently simple projects \u2014 such as a terrace renovation \u2014 can present complex challenges that require specific technical solutions. Integrating bituminous membranes and liquid systems delivers continuity, safety, and durability without compromise.<\/p>\n\n\n\n<p>The hybrid approach adopted by Winkler represents one of the most advanced solutions available today for waterproofing renovation projects.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ_%E2%80%93_Frequently_Asked_Questions\"><\/span>FAQ \u2013 Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>1. What are hybrid waterproofing systems?<\/strong><\/p>\n\n\n\n<p>&nbsp;Hybrid systems combine two complementary technologies: prefabricated bituminous membranes for large surfaces and liquid membranes for complex details such as thresholds, corners, and junctions. The goal is to combine installation speed with adaptability to critical construction details.<\/p>\n\n\n\n<p><strong>2. Why use a hybrid system instead of a single membrane?<\/strong><\/p>\n\n\n\n<p>In renovation projects, certain areas do not allow torch-applied bitumen, while others require fast coverage of large surfaces. The hybrid system makes the most of both solutions, ensuring continuous, long-lasting waterproofing without compromising aesthetics or functionality.<\/p>\n\n\n\n<p><strong>3. What are the main advantages of hybrid systems?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fast execution on large surfaces<\/li>\n\n\n\n<li>Flexibility on critical details<\/li>\n\n\n\n<li>Continuous waterproofing without interruptions<\/li>\n\n\n\n<li>High durability and resistance to weathering<\/li>\n\n\n\n<li>Compliance with technical standards and best practice<\/li>\n<\/ul>\n\n\n\n<p><strong>4. How do I choose the right bituminous membrane?<\/strong><\/p>\n\n\n\n<p>It depends on the intended use and the expected mechanical stresses. For walkable terraces, a double layer of EXPERTA 400 at 4 mm is recommended, with polyolefin-modified bitumen and high-weight polyester reinforcement, compliant with EN 13707.<\/p>\n\n\n\n<p><strong>5. How do I choose the right liquid membrane?<\/strong><\/p>\n\n\n\n<p>Consider: nature of the substrate, presence of residual moisture, UV exposure, and the need for a visible, walkable finish. Products such as ONE\u00ae offer adhesion on heterogeneous materials, continuous waterproofing, and a safe, walkable surface.<\/p>\n\n\n\n<p><strong>6. Are hybrid systems suitable for difficult thresholds and corners?<\/strong><\/p>\n\n\n\n<p>Yes. The liquid membrane, combined with accessories such as BC SEAL BAND, allows concave angles, thresholds, and junctions to be treated effectively, sealing all critical details and preventing water ingress.<\/p>\n\n\n\n<p><strong>7. Can liquid membranes be applied on damp substrates?<\/strong><\/p>\n\n\n\n<p>Yes. Products such as ONE\u00ae are elastic, breathable, and applicable even on damp or irregular substrates, without compromising adhesion or durability.<\/p>\n\n\n\n<p><strong>8. What is the ultimate goal of a hybrid system?<\/strong><\/p>\n\n\n\n<p>To guarantee continuous, reliable waterproofing by combining speed, adaptability, and durability. Even complex projects \u2014 such as terraces with delicate thresholds \u2014 can be fully protected without aesthetic or functional compromise.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In modern construction, most projects involve the renovation of existing buildings, characterised by highly heterogeneous materials and techniques. While renovation is often straightforward, waterproofing remains a genuine challenge \u2014 especially when traditional systems cannot be applied to thresholds, corners, or delicate materials.<\/p>\n","protected":false},"author":11,"featured_media":118307,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[88],"tags":[],"class_list":["post-118318","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en"],"_links":{"self":[{"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/posts\/118318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/comments?post=118318"}],"version-history":[{"count":9,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/posts\/118318\/revisions"}],"predecessor-version":[{"id":123358,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/posts\/118318\/revisions\/123358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/media\/118307"}],"wp:attachment":[{"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/media?parent=118318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/categories?post=118318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/winklerchimica.com\/en\/wp-json\/wp\/v2\/tags?post=118318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}