[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"cms-page:\u002Fintus-insights\u002Fleed-v5-vs-leed-v4-what-s-changing-and-why-it-matters-for-high-performance-windows":3},{"id":4,"title":5,"seo":6,"blocks":11},63,"Blog",{"title":7,"keywords":8,"description":9,"og_image":10},"LEED v5 vs. v4: Window Impacts","LEED v5 vs v4, LEED v5 requirements, LEED certification windows, LEED green building, embodied carbon windows, high-performance windows LEED, sustainable fenestration LEED, LEED v4.1 vs v5","What changes between LEED v4 and v5 and how the updates affect window specification — credits, thermal thresholds, and compliance strategies.",null,[12],{"id":13,"type":14,"content":10,"data":15,"blocks":66},"a229ea1b-0a54-47bb-8cee-be943bfc4658","AppBlogPost",{"title":16,"categories":17,"image":26,"created_at":32,"posts":33},"LEED v5 vs LEED v4: What’s Changing and Why It Matters for High-Performance Windows",[18,22],{"id":19,"title":20,"slug":21},1,"Sustainability & Green Building","sustainability-and-green-building",{"id":23,"title":24,"slug":25},5,"Education & Market-Specific Topics","education-and-market-specific-topics",{"src":27,"width":28,"height":29,"alt":30,"caption":31,"video":31},"https:\u002F\u002Fwww.intuswindows.com\u002Fimg\u002Fe6481ed5-b7c5-40a9-ad95-b66ef581844c\u002Fleed5vsleed4.jpg?fm=webp&q=90&fit=max&crop=1920%2C1080%2C0%2C258&w=1248",1920,1080,"Boston Street Building","","2025-10-06T12:07:01+00:00",[34,45,54],{"id":35,"title":36,"summary":37,"image":38,"link":43,"created_at":44},84,"How INTUS Windows Tests","Knowing the standards for windows testing exist is different from knowing how a manufacturer applies them. This post explains the key window performance tests and describes exactly how INTUS Windows conducts those tests not only in the labs, but also at the factory.",{"src":39,"width":40,"height":41,"alt":42,"caption":31,"video":31},"https:\u002F\u002Fwww.intuswindows.com\u002Fimg\u002Fdeb22165-9f1d-49d1-aadc-d268832b0761\u002Fgera.jpg?fm=webp&q=80&fit=contain&crop=1536%2C920%2C0%2C64&w=736&h=442",1536,920,"Gera","how-intus-windows-tests","2026-03-26T09:00:39+00:00",{"id":46,"title":47,"summary":48,"image":49,"link":52,"created_at":53},82,"INTUS XLine Aluminum Windows","XLine Aluminum windows combine AW Class strength and DP100 performance with Passive House-level efficiency. Designed for high-rise, commercial, and multifamily projects, they deliver durability, energy savings, and long-term reliability without trade-offs.",{"src":50,"width":40,"height":41,"alt":51,"caption":31,"video":31},"https:\u002F\u002Fwww.intuswindows.com\u002Fimg\u002F701e8ffb-fbd9-4336-bda0-97b8048cda50\u002Fxline-instalation.jpg?fm=webp&q=80&fit=contain&crop=1536%2C920%2C0%2C64&w=736&h=442","Xline Instalation","intus-xline-aluminum-windows","2026-02-25T11:07:34+00:00",{"id":55,"title":56,"summary":57,"image":58,"link":64,"created_at":65},80,"Miramar Project Case Study","Miramar is a high-rise multi-family development in New York City featuring high-performance INTUS window systems. In collaboration with L+M Builders Group LLC, the project delivers exceptional energy efficiency, structural strength, and acoustic comfort for modern urban living.",{"src":59,"width":60,"height":61,"alt":62,"caption":63,"video":31},"https:\u002F\u002Fwww.intuswindows.com\u002Fimg\u002F63b92924-d3ad-4162-86e0-02b2833f54d8\u002Fmiramar-complete-2.jpg?fm=webp&q=80&fit=contain&crop=1500%2C899%2C0%2C211&w=736&h=442",1500,899,"Miramar Complete 2","Photo by Colin Miller","miramar-project-case-study","2026-02-17T15:51:13+00:00",[67,75,82,89,96,102],{"id":68,"type":69,"content":70,"blocks":73,"data":74},3878,"AppBlogtext",{"html":71,"title":10,"image_position":72},"\u003Cp>The green building landscape is evolving. On April 28, 2025, the U.S. \u003Ca target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"\" href=\"https:\u002F\u002Fwww.usgbc.org\u002F\">Green Building Council\u003C\u002Fa> (USGBC) officially launched \u003Ca target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"\" href=\"https:\u002F\u002Fwww.usgbc.org\u002Fleed\u002Fv5\">\u003Cstrong>LEED v5\u003C\u002Fstrong>\u003C\u002Fa>, the newest version of the world’s most widely recognized green building certification. While \u003Ca target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"\" href=\"https:\u002F\u002Fwww.usgbc.org\u002Fleed\u002Fv41\">\u003Cstrong>LEED v4 and v4.1\u003C\u002Fstrong>\u003C\u002Fa> remain valid for projects registered through Q1 2026, the future is clear: LEED v5 sets a higher bar for decarbonization, resilience, and human health.\u003C\u002Fp>\u003Cp>For developers, architects, and contractors, the transition from \u003Cstrong>LEED v4 to LEED v5\u003C\u002Fstrong> means rethinking strategies from building systems to materials. And for fenestration, the changes are particularly significant.\u003C\u002Fp>","left",[],{"image":10},{"id":76,"type":69,"content":77,"blocks":80,"data":81},3879,{"html":78,"title":79,"image_position":72},"\u003Ctable>\u003Ctbody>\u003Ctr>\u003Cth colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Category\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Fth>\u003Cth colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>LEED v4\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Fth>\u003Cth colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>LEED v5\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Fth>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Focus\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Balanced credits across energy, water, materials, and IEQ\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>50% Decarbonization, 25% Quality of Life, 25% Ecology\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Carbon Requirements\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Focus on operational efficiency\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Operational + embodied carbon reductions required\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Electrification\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Encouraged but optional\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Push for all-electric, no on-site combustion\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Performance Tracking\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Design-phase modeling\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>25-year carbon projections + real-time monitoring\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Embodied Carbon\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>EPDs encouraged, not mandatory\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Embodied carbon data & reduction required\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>\u003Cstrong>Health & Equity\u003C\u002Fstrong>\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Indoor air quality, daylight credits\u003C\u002Fp>\u003C\u002Ftd>\u003Ctd colspan=\"1\" rowspan=\"1\">\u003Cp>Adds equity, resilience, and community impact\u003C\u002Fp>\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>","Side-by-Side Comparison: LEED v5 vs LEED v4",[],{"image":10},{"id":83,"type":69,"content":84,"blocks":87,"data":88},3880,{"html":85,"title":86,"image_position":72},"\u003Cp>\u003Cstrong>1. Decarbonization Takes Center Stage\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>LEED v5 puts half its credit weight on decarbonization, a major shift from LEED v4’s broader distribution. Projects must now prove reductions in both \u003Cstrong>operational\u003C\u002Fstrong> and \u003Cstrong>embodied carbon\u003C\u002Fstrong>.\u003C\u002Fp>\u003Cp>\u003Cstrong>2. Electrification and No-Combustion Pathways\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>LEED v5 rewards projects that transition away from on-site fossil fuel combustion. Buildings designed with all-electric HVAC systems benefit most when paired with high-performance façades that reduce demand.\u003C\u002Fp>\u003Cp>\u003Cstrong>3. Stricter Carbon Thresholds and Performance Tracking\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>Instead of relying only on design-phase models, LEED v5 requires \u003Cstrong>25-year carbon projection plans\u003C\u002Fstrong> and \u003Cstrong>ongoing performance monitoring\u003C\u002Fstrong>.\u003C\u002Fp>\u003Cp>\u003Cstrong>4. Embodied Carbon & Material Transparency\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>While LEED v4 encouraged Environmental Product Declarations (EPDs), LEED v5 expects project teams to measure, disclose, and reduce embodied carbon across all building materials.\u003C\u002Fp>\u003Cp>\u003Cstrong>5. Broader Goals: Health, Equity, and Resilience\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>Beyond energy and carbon, LEED v5 emphasizes occupant well-being, equity, and community resilience. Windows directly influence daylighting, noise reduction, and thermal comfort, all critical for human-centered design.\u003C\u002Fp>","Key Changes Explained",[],{"image":10},{"id":90,"type":69,"content":91,"blocks":94,"data":95},3881,{"html":92,"title":93,"image_position":72},"\u003Cp>The shift from LEED v4 to LEED v5 raises the bar. Many projects that might have achieved \u003Cstrong>Gold under v4 may only reach Silver under v5\u003C\u002Fstrong> unless stronger carbon and performance strategies are implemented.\u003C\u002Fp>\u003Cp>For example, \u003Ca target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"\" href=\"https:\u002F\u002Fwww.intuswindows.com\u002Fprojects\u002Fascent-mke\">Ascent MKE in Milwaukee\u003C\u002Fa>, the world’s tallest mass timber hybrid building, exemplifies the principles that LEED v5 emphasizes:\u003C\u002Fp>\u003Cul>\u003Cli>\u003Cp>\u003Cstrong>Low embodied carbon materials\u003C\u002Fstrong> – mass timber structure and efficient glazing.\u003C\u002Fp>\u003C\u002Fli>\u003Cli>\u003Cp>\u003Cstrong>High thermal performance\u003C\u002Fstrong> – windows contribute to reduced heating and cooling loads.\u003C\u002Fp>\u003C\u002Fli>\u003Cli>\u003Cp>\u003Cstrong>Daylighting and comfort\u003C\u002Fstrong> – expansive glass façades improve well-being while meeting performance targets.\u003C\u002Fp>\u003C\u002Fli>\u003C\u002Ful>\u003Cp>\u003Cstrong>LEED v5 vs LEED v4 is not just an update; it’s a transformation.\u003C\u002Fstrong> With a sharper focus on decarbonization, electrification, and resilience, the new rating system raises expectations for every material and system in the building envelope.\u003C\u002Fp>\u003Cul>\u003Cli>\u003Cp>\u003Cstrong>Optimized SHGC Values\u003C\u002Fstrong> – balance solar gain with daylighting\u003C\u002Fp>\u003C\u002Fli>\u003Cli>\u003Cp>\u003Cstrong>Embodied Carbon Reduction\u003C\u002Fstrong> – designed with lifecycle performance in mind\u003C\u002Fp>\u003C\u002Fli>\u003C\u002Ful>","What This Means for Projects?",[],{"image":10},{"id":97,"type":69,"content":98,"blocks":100,"data":101},3882,{"html":99,"image_position":72},"\u003Cp>At INTUS Windows, we’re proud to support \u003Ca target=\"\" rel=\"noopener noreferrer nofollow\" class=\"\" href=\"https:\u002F\u002Fwww.intuswindows.com\u002Fprojects\">projects\u003C\u002Fa> that embody this shift, proving that high-performance fenestration is central to building a sustainable future.\u003C\u002Fp>",[],{"image":10},{"id":103,"type":104,"content":10,"data":10},"ea377e57-006f-4994-be4b-5c62e4db9dd0","AppNewsletter"]