Protect A1T3 Plus Impermeable Underlay

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The Protect A1T3 Plus is a high-resistance, heavy-duty, impermeable underlay. An ideal solution for cold or warm pitched roofs where traditional ventilation is being used, the non- breathable membrane provides a perfect alternative to 1F felt, 5U felts and second-generation plastic sheet materials. Offering impressive wind uplift resistance, the A1 impermeable underlay can be used in any wind zone without the need for additional sealing tapes. The A1T3 Plus is completely water and airtight. Its high-quality, four-ply polypropylene composition with waterproof core is strong and durable, as well as UV and heat resistant, giving you long-lasting peace of mind both during and after construction*. At 190 grams per metre squared, this premium membrane is still lightweight, easy to cut and handle, and effortless to install. Roofing Supplies UK are pleased to offer the Protect A1T3 Plus impermeable underlay in two sizes, simply select the option that suits your needs from the dropdown box. Why Choose this Protect A1T3 Plus Impermeable Underlay? Suitable for cold & warm ventilated pitched roofs Water & airtight UV and heat resistant Strong & durable Lightweight alternative to felts and plastic sheeting UKCA/CE certified Product Specifications: Size: 1m x 45m / 1.5m x 30m (select from dropdown) Colour: Dark grey Weight: 190 g/m² Material: Four-ply polypropylene with waterproof core Resistance to Water Penetration: W1 Unaged Tensile Strength (MD / CD): 417 / 321 N/50mm Aged Tensile Strength (MD / CD): 392 / 327 N/50mm Nail Tear Strength (MD / CD): 312 / 377 N Flexibility at Low Temperatures: -40°C UV Resistance: 3 months Wind Zones: 1-5 (unrestricted) at 345mm batten gauge (resistance to wind pressure 1732 Pa), when tested to Annex A of BS 5534 Show more