The WonderBuilds N Film Waterproofing Membrane Underlay offers exceptional protection with its elastomeric modified bitumen composition, designed to tackle diverse waterproofing challenges.

Engineered through state-of-the-art manufacturing, this membrane features a robust fibre-glass fleece carrier, enhancing its dimensional stability and reinforcing its mechanical properties. Its SBS elastomer modification boasts enhanced thermal, chemical, and ageing resistance, ensuring long-lasting performance under most environmental conditions. Ideal for applications such as base layers in multi-layer waterproofing systems, damp-proofing, and re-roofing damaged bitumen systems, this underlay boasts absolute water impermeability, adaptability to a wide range of surfaces, and resistance to harsh chemical and temperature fluctuations.

• Size: 1m x 16m
• Weight: 3kg
• Used for various waterproofing applications
• Made with SBS elastomer-modified bitumen
• Absolute impermeability to water
• Superior dimensional stability with glass-fibre
• High resistance to chemicals and bacteria
• Performs well under thermal fluctuations
• Adheres easily to various surface types