Breathable Membrane Roofing Underlay Professional Grade 120 GSM Roll 4.92x164 ft (1.5x50m) 3 Layer Vapor Permeable Roof Underlayment Covers 807 ft² (75 m²) for Homes, Sheds & Pitched Roofs

ONE SOLUTION FOR EVERY ROOF – High-performance, breathable roofing membrane for residential homes, sheds, and more. Use under felt, tiles, metal sheets, or shingles. Works with both ventilated and fully sarked systems on pitched or sloped roofs, whether building new or upgrading. VAPOR PERMEABLE MOISTURE PROTECTION – Heavy Duty 3 layer roof membrane with a breathable film between two protective layers of polypropylene fleece, has strong resistance to moisture while allowing internal humidity to escape, EN 13859‑1 roof membrane. PROFESSIONAL GRADE - EASY HANDLING – Lightweight roof underlayment roll at only ~120 g/m², each roll measures 4.92 × 164 ft (1.5 × 50 m) and covers 807 ft² (75 m²). Hassle-free on-site handling for both DIY projects and professional installation - built with superior tear resistance for lasting performance. QUICK, WEATHERPROOF SEALING – Roof membrane waterproof installs fast with secure, watertight overlaps that block leaks and drafts. Designed for easy stapling or taping, this roof membrane underlay UV, RAIN & TEMPERATURE RESISTANCE – Withstands sun exposure for up to 4 months while providing W1‑rated water resistance for superior protection against rain and moisture. Performs reliably in extreme conditions, with a temperature range from –40 °C to +100 °C.