{"product_id":"tyvek-supro-breather-membrane-felt-underlay-1-5m-x-50m-75m2-roll","title":"Tyvek Supro Breather Membrane Felt Underlay 1.5m x 50m (75m2\/Roll)","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eTyvek Supro Breather Membrane Felt Underlay is a vapour-permeable pitched roof underlay designed to deliver dependable resistance against wind-driven rain and external moisture ingress.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eManufactured from high-performance composite layers, it maintains tensile strength and dimensional stability during installation and long-term service.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe membrane supports controlled vapour movement from the loft space while maintaining a water-resistant external barrier suitable for ventilated and non-ventilated cold and warm roof constructions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eIts robust construction enables handling, cutting, and fixing without excessive tearing, aiding reliable installation across varying roof geometries.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eIt is supplied in a 1.5m × 50m roll providing 75m² of coverage.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreathable performance\u003c\/strong\u003e: Allows vapour to escape from the roof structure while resisting external moisture penetration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh tensile strength\u003c\/strong\u003e: Multi-layer composite design supports durability during installation and service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWind-uplift resistance\u003c\/strong\u003e: Suitable for both ventilated and non-ventilated pitched roof systems in accordance with roofing standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow water permeability\u003c\/strong\u003e: Provides a dependable secondary weatherproof layer beneath tiles and slates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstaller friendly\u003c\/strong\u003e: Lightweight, flexible membrane suitable for efficient handling, cutting, and fixing on site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll identification\u003c\/strong\u003e: Supplied in a \u003cstrong\u003e1.5m × 50m roll\u003c\/strong\u003e delivering \u003cstrong\u003e75m²\u003c\/strong\u003e of membrane coverage.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold or warm pitched roofs\u003c\/strong\u003e: Suitable for use beneath tiles and slates in ventilated or non-ventilated constructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefurbishment projects\u003c\/strong\u003e: Appropriate for upgrading underlay performance during strip-and-replace roofing works.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew build roofing\u003c\/strong\u003e: Suitable for integration within modern roof build-ups complying with current ventilation guidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWind-exposed sites\u003c\/strong\u003e: Appropriate for locations requiring elevated wind-uplift resistance.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Guidance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll positioning\u003c\/strong\u003e: Install horizontally across rafters or sarking with appropriate laps according to pitch and exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing method\u003c\/strong\u003e: Secure using corrosion-resistant staples or nails with counter-battens as required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLap formation\u003c\/strong\u003e: Maintain minimum head and side laps in accordance with manufacturer guidance and roof pitch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEaves and ridge detailing\u003c\/strong\u003e: Follow approved detailing for drainage paths, ventilation continuity, and ridge termination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant note\u003c\/strong\u003e: Installation must comply with BS 5534 and manufacturer instructions for wind-uplift and weather resistance.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompliance \u0026amp; Performance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance\u003c\/strong\u003e: Designed to resist external moisture penetration under typical UK weather exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVapour permeability\u003c\/strong\u003e: Allows controlled vapour movement to reduce interstitial condensation risks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e: Manufactured for long service life under normal pitched-roof environmental conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling note\u003c\/strong\u003e: Store rolls flat or upright and protect from prolonged UV before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant note\u003c\/strong\u003e: Always follow manufacturer guidance for laps, fixings, and integration with ventilation strategy.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tyvek","offers":[{"title":"1.5m","offer_id":53771555799151,"sku":"5004049","price":180.0,"currency_code":"GBP","in_stock":false},{"title":"1m","offer_id":53771555831919,"sku":"5004048","price":162.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/9784\/4591\/files\/Tyvek_Supro_Roofing_Membrane_-_Photo_Resized.jpg?v=1783758798","url":"https:\/\/supplyyard.co.uk\/products\/tyvek-supro-breather-membrane-felt-underlay-1-5m-x-50m-75m2-roll","provider":"Supply Yard","version":"1.0","type":"link"}