Breathable Roof Membrane Bristol - High-Performance Roofing Felt

Premium 3-layer thermal laminated membrane designed for pitched roofing and timber frame construction. Provides superior water resistance while maintaining essential vapour permeability to prevent mould and condensation buildup.

Key Specifications:

• Size: 1.5m wide x 50m long rolls
• Construction: 3-layer thermal lamination
• Certification: Fully BBA approved
• Compliance: BS5534 compliant in all wind zones
• UV Protection: Up to 3 months of temporary exposure
• Material: 100% recyclable

BBA Approved Applications:

• Warm Non-Ventilated Roofing: Complete thermal envelope construction
• Cold Ventilated Roofing: Traditional ventilated roof spaces
• Cold Non-Ventilated Roofing: Modern airtight construction
• Timber Frame Walls: External wall protection with cavity construction
• Masonry Outer Leaf: Compatible with brick and block construction
• Cladding Systems: Works with weatherboarding, tile, and slate cladding

Performance Benefits:

• Water Resistance: Excellent protection against wind-driven rain, snow, and dust
• Vapor Permeability: Allows moisture vapour passage to prevent condensation
• Air Barrier: Reduces air leakage for energy-efficient design
• Windproof Layer: Minimizes heat loss through air infiltration
• Insulation Protection: Maintains optimum thermal efficiency of insulation materials

Construction Applications: Roofing Underlay: Premium alternative to traditional felt with enhanced performance Temporary Weather Protection: Short-term waterproof barrier during construction around whole house Timber Frame Construction: Essential component for external wall weatherproofing Cavity Wall Systems: Compatible with masonry outer leaf construction

Technical Performance:

• Tensile Strength: Good resistance to tearing and damage
• Durability: Building lifespan for walls, comparable to traditional roof tile underlays
• Flammability Resistance: Enhanced performance to EN 11925-2
• Flexibility: Lightweight and easy to handle during installation
• Water Vapor Transmission: Excellent breathability properties

Energy Efficiency: Acts as an effective air barrier, allowing more energy-efficient building design by reducing unwanted air leakage while maintaining essential moisture management.

Environmental Benefits:

• 100% Recyclable: Sustainable end-of-life disposal
• Mould Prevention: Vapor permeability prevents harmful condensation
• Thermal Performance: Protects insulation efficiency for reduced energy consumption

Quality Assurance: BBA approval ensures compliance with British building standards, providing confidence in long-term performance across all UK wind zones.