Description
Strotex V Breathable Membrane 135g – 50m x 1.5m | CE Certified Roofing & Wall Membrane
Strotex V 135g Breathable Membrane – High-Performance Roofing Underlay for Reliable Weather Protection
The Strotex V Breathable Membrane 135g (50m x 1.5m) is a premium-quality breathable roofing and wall membrane designed to provide long-lasting protection against moisture, wind, rain, and airborne contaminants while allowing water vapour to escape from within the building. Manufactured to British Standards and CE Certified, Strotex is recognised as one of the UK’s leading breathable membrane brands for professional roofing and construction projects.
With its durable 135g/m² construction, the Strotex V membrane delivers superior strength and performance compared to many standard breathable membranes, making it ideal for new builds, extensions, renovations, and timber frame applications.
Why Choose Strotex V?
- Premium 135g/m² breathable membrane
- Roll size: 50m x 1.5m (75m² coverage)
- British Standard Approved
- CE Certified
- Higher specification than equivalent market membranes
- Excellent vapour permeability to reduce condensation
- Protects against wind-driven rain and moisture ingress
- Strong, durable and tear-resistant construction
- Suitable for pitched roofs, timber frame walls, and external cladding systems
- Quick and easy to install
Superior Performance Compared to Standard Membranes
Strotex breathable membranes are manufactured to higher specifications than many competing products:
- Strotex 95g – Higher specification than standard market alternatives
- Strotex 115g – Outperforms equivalent membranes
- Strotex 135g – Higher specification than comparable products
- Strotex 150g – No direct market equivalent
- Strotex 170g – Exceeds equivalent market membranes
- Strotex 220g – Industry-leading specification, outperforming all other breathable membranes available
Advanced Moisture & Weather Protection
The Strotex V Breathable Membrane acts as a highly effective secondary barrier beneath roof coverings and external cladding systems. It helps prevent moisture that penetrates the outer layer from reaching the building structure while allowing trapped water vapour to escape, reducing the risk of condensation and helping maintain the effectiveness of insulation.
It also protects against:
- Wind-driven rain
- Moisture ingress
- Dust and dirt
- External environmental contaminants
This combination of breathability and weather resistance helps improve the longevity, efficiency, and structural integrity of your roofing or wall system.
Product Specifications
- Brand: Strotex
- Product: Strotex V Breathable Membrane
- Weight: 135g/m²
- Roll Size: 50m x 1.5m
- Coverage: 75m²
- Certification: CE Certified
- Compliance: British Standards
- Colour: As shown in the second product image
The Strotex Range
The Strotex range offers high-quality breathable membranes to suit every roofing and construction project. For applications requiring even greater strength and performance, Strotex 150g, 170g, and the premium 220g 4-layer fully permeable membrane provide enhanced durability and superior weather protection.
Choose the Strotex V 135g Breathable Membrane for dependable, professional-grade protection that delivers outstanding breathability, durability, and performance for residential and commercial roofing projects.

