This Marley Universal Non-Breathable Underlay offers a versatile solution designed to enhance installation consistency while adhering to British Standard regulations. Made as a 140g/m² membrane, this impermeable underlay delivers an array of benefits. Its integrated tape syste... Read More
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This Marley Universal Non-Breathable Underlay offers a versatile solution designed to enhance installation consistency while adhering to British Standard regulations. Made as a 140g/m² membrane, this impermeable underlay delivers an array of benefits. Its integrated tape system seals underlay laps effortlessly while functioning as a reliable wind barrier, effectively safeguarding against all UK wind zones (BS 5534).
Engineered as a high-performance roofing membrane, this Marley Universal Non-Breathable Underlay suits a variety of pitched roof constructions where conventional ventilation methods are preferred. Comprising a three-layer composite of two spun-bonded polypropylene fabrics and a non-breathable polyolefin film, it delivers superior strength, durability and ease of installation, catering to warm or cold roof applications.
Featuring printed guidance lines, this underlay ensures proper lap alignment in line with British Standard guidelines, providing consistently straight placement. Without the need for additional 'fly' battens to fix laps or excessive laps to match tile batten courses, this underly reduces costs, saving you both time and money during installation. Seamlessly integrating into the Marley roof system or harmonising effortlessly with tiles and slates from other manufacturers, it offers exceptional compatibility and performance.
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