FIBRANskin VENT SILVER | Breathable and reflective membrane for pitched tiled roofs

Reflective performance

- Emissivity 0.10 (range 0.08–0.12), EN 15976

- Thermal resistance of free air ≤0.57 m²K/W in horizontal flow, EN ISO 6946

- Enhanced reflection of infrared and ultraviolet solar radiation without impeding water vapour diffusion

Moisture management

- Water vapour diffusion resistance Sd = 0.03 m (0.01–0.05), EN ISO 12572 (C)

- Water tightness class W1 (EN 1928, A) — retained after ageing

- Water column 2.3 m (EN 20811) — the highest in the FIBRANskin range

- Air permeability ≤0.05 m³/(m²·h·50Pa) in accordance with EN 12114

- Explicitly designated as airtight in the TDS

- Tensile strength 240 N/50 mm (MD, 200–280) and 200 N/50 mm (XD, 170–230)

- Elongation 9% (MD) and 13% (XD)

- Nail tear strength 80 N (MD) and 75 N (XD)

- Dimensional stability ≤1% (EN 1107-2)

Durability

- Following artificial UV and heat ageing: 90% retention of tensile strength in MD and XD

- Retention of 75% (MD) and 70% (XD) of elongation

- Operating range -40 °C to +100 °C, flexibility down to -40 °C

- UV exposure for up to 4 months prior to covering — declared limit

- 25-year manufacturer’s warranty