Breather Membrane – Durable – Residential & Commercial Roofing

Product Overview

This high-performance breather membrane, measuring 50m x 1.5m and covering 75m², is designed to offer superior breathable underlay for pitched roofs and timber frame walls. It effectively prevents external water ingress while allowing internal moisture vapour to escape, protecting structures from condensation-related damage such as timber decay, insulation deterioration, and mould growth. Suitable for warm, cold, and hybrid roof constructions, it can be used in fully supported and unsupported applications. The wider 1.5m format minimizes overlaps, reducing waste and improving installation efficiency. Engineered to withstand all five wind zones as per BS5534:2014 Annex A, it is suitable for both sheltered inland properties and exposed coastal or high-altitude locations.

Features & Benefits

• Superior bond strength: Ensures long-term weather protection.
• UV stability: Resistant to UV exposure for up to 3 months during construction.
• Improved thermal efficiency: Reduces air penetration to enhance insulation performance.
• Versatile installation: Effective in fully supported and unsupported installations.
• Roof compatibility: Suitable for various roof systems.
• Wind zone compliant: Certified for wind zones 1–5.
• BBA certified: Verified quality and performance.
• Lightweight handling: Easier on-site installation.
• Wider roll efficiency: Reduces overlaps on large surfaces.

Applications

• Tiled and slated pitched roofs: Provides a weather-resistant breathable underlay.
• Warm, cold, and hybrid roofs: Compatible with multiple configurations.
• Timber frame walls: Serves as a breathable sheathing membrane.
• Fully supported and unsupported installations: Suitable for direct to boards or draped applications.
• Exposed locations: Suitable for all UK wind zones.

Installation Guidance

• Substrate preparation: Ensure surfaces are clean and dry.
• Fixing: Use corrosion-resistant staples, nails, or tapes.
• Laps: Overlap appropriately for maximum efficiency.

• Wind zones: 1-5 certified
• UV exposure: Up to 3 months
• Certifications: BBA

FAQ

• Can this membrane be used on flat roofs? No, it is designed for pitched roofs and timber frame walls.
• Is it suitable for coastal areas? Yes, it is engineered for all UK wind zones including coastal areas.
• What tools are needed for installation? Corrosion-resistant staples, nails, or fixing tapes are recommended.