Description
The WonderBuilds BroofT4 Underlay is a high-performance underlay designed for use in both new builds and remedial roofing applications. Made using high-quality distilled bitumen, the underlay is reinforced with polyester for maximum durability.
Boasting excellent fire resistance, the BroofT4 underlay is easily installed using torch on methods. With an attractive sand finish, the WonderBuilds BroofT4 Underlay is a reliable and long-lasting solution you can trust.
Why Choose this WonderBuilds BroofT4 Underlay 10m x 1m?
- High-performance underlay solution
- Fire resistant
- Attractive sand finish
- Quick & easy installation
- Strong & durable
- Cost-effective
Product Specifications:
Type of Compound: APP
Type of Reinforcement: Polyester
Upper Face Finish: Sand
Lower Face Finish: PE film
Roll Dimensions: 10m x 1m
Weight (kg/m²): 3
Cold Flexibility (°C): -15
Flow Resistance (°C): 120
Tensile Strength (N/50mm): 600 (LD) / 400 (TD)
Elongation at Break (%): 35 (LD) / 35 (TD)
Tearing Resistance (N): 150 (LD) / 150 (TD)
Dimensional Stability (%): -0.3
External Fire Performance: BROOF(t4)
Reaction to Fire: Class E
Watertightness (kPa): 60
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