What Is UNI 11928-1 and Why Does It Matter?
Introduced in 2023, UNI 11928-1 is a game-changing regulation for the construction industry. For the first time, site-applied liquid waterproofing membranes are officially recognized as equivalent to prefabricated membranes—with clear, performance-based criteria.
This opens up more flexibility for designers, contractors, and builders who need solutions that are:
- Certified
- Durable
- Versatile
- Easy to apply
And that’s exactly what Wingum Plus® H2O by Winkler delivers.
💧 Wingum Plus® H2O: The Complete Liquid Waterproofing System
The Wingum Plus® H2O range features high-performance, water-based, solvent-free waterproofing systems developed to fully comply with the technical and performance standards of UNI 11928-1. Whether you’re working on an exposed flat roof or a protected green roof, this system offers a reliable solution.
👷♂️ Suitable for:
- Walkable and maintainable exposed roofs
- Protected systems such as green roofs, inverted roofs, and ballasted installations
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Main Products in the Wingum Plus® H2O Range
✅ Wingum Plus® H2O – The Core Solution
A fiber-reinforced liquid membrane, ready to use and ideal for continuous or complex surfaces. It combines advanced polymer technology with eco-conscious formulation.
Perfect for:
- Terraces and balconies
- Refurbishing aged bituminous membranes
Key features:
- Solvent-free & water-based
- Excellent UV, weather, and standing water resistance
- Strong adhesion to concrete, brick, metal, wood, and fiber cement
Certified according to EAD 030350-00-0402, the European Assessment Document for: “Liquid-applied roof waterproofing kits” This ensures full compliance with European performance, durability, and safety standards.
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⚡ Wingum Plus® H2O Rapid – Quick-Setting Formula
Need fast results? Choose this rapid-setting version for time-sensitive projects or unstable weather conditions. Delivers speed without compromising quality or compliance.
🔥 Wingum Plus® H2O BRoof T2 – Fire-Resistant Waterproofing
This version offers both waterproofing and external fire resistance, certified BRoof T2 under UNI EN 13501-5. A smart, future-proof choice for:
- Roofs with photovoltaic systems
- HVAC equipment areas
- Surfaces requiring high safety standards
🌡️ Wingum Plus® H2O Reflex – Cool Roof Technology
Designed for solar reflectivity and energy efficiency, Wingum Plus® H2O Reflex helps reduce building heat loads.
Certified by CRRC (Cool Roof Rating Council) with a Solar Reflectance Index (SRI) of:
- 108 (new)
- 105 (after 3 years)
Ideal for:
- Hot climates
- Sun-exposed surfaces
- Sustainable construction projects
💡 Why Choose Wingum Plus® H2O for UNI 11928-1 Compliance?
🔧 Easy Application, Total Versatility
The liquid formulation allows seamless, joint-free coverage—even on irregular or complex surfaces.
“With Wingum Plus® H2O, we bring advanced technology to construction sites—designed for ease of application, regulatory reliability, and long-term performance. The new standard sets the framework, but it’s the products that make the difference.”
— Leonardo Castelvecchio, Technical Sales, Winkler
🧱 Compatible with Multiple Substrates
Applies directly to:
- Metal
- Wood
- Brick
- Cement
- Fiber cement
It’s a top choice for both new constructions and refurbishments.
✅ Fully Compliant with UNI 11928-1
Every product in the range is developed to meet the standard’s performance criteria for both exposed and protected waterproofing applications.
🌱 Eco-Friendly from the Ground Up
All versions are:
- Water-based
- Solvent-free
- Extremely low in VOCs (as low as 12.90 g/L)
📈 UNI 11928-1 Is Changing the Market. Wingum Plus® H2O Is Leading the Way.
This regulation is a milestone for architects, contractors, and applicators. Finally, a clear, performance-based classification for liquid-applied membranes.
Wingum Plus® H2O by Winkler meets this new benchmark with confidence—delivering certified, high-performance, and sustainable waterproofing systems.
📞 Ready to Elevate Your Waterproofing Projects?
👉 Contact Winkler today:
📞 +39 (0)2 26.700.605
📧 info@winklerchimica.com
