{"product_id":"visqueen-radon-r400-membrane-4m-x-25m-100sqm","title":"Visqueen Radon R400 Membrane 4m x 25m (100sqm)","description":"\u003cp\u003eVisqueen Radon R400 is a 400 µm polyethylene membrane specifically designed as a radon gas barrier for affected areas. It also functions as a damp-proof membrane, providing dual protection in a single layer. BBA certified to BS 8485, it is suitable for new-build ground floor constructions in radon-affected zones.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSpecifically designed for radon protection in affected areas\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003e400 µm thickness provides robust, tear-resistant performance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eBBA certified to BS 8485 for radon gas barrier applications\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eAlso acts as a damp-proof membrane — dual function\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003e100 m² roll for efficient coverage on larger projects\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003e4 m width reduces the number of laps required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eCompatible with Visqueen radon jointing tapes and sealants\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eMeets Building Regulations Part C for radon-affected areas\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eLay the membrane over the prepared sub-base or concrete slab with a minimum 150 mm overlap at all joints. Seal laps with Visqueen Radon double-sided jointing tape. Dress membrane up walls and around all service penetrations to maintain a continuous radon-tight seal. Protect the installed membrane from puncture during subsequent works.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003eEach roll covers 100 m² (4 m × 25 m). Allow for 150 mm overlaps at all joints when calculating quantities. For complex layouts with multiple penetrations, allow approximately 10–15% additional material for waste and lapping.\u003c\/p\u003e","brand":"VISQUEEN","offers":[{"title":"Default Title","offer_id":51305583903059,"sku":"VISQUEEN-R400-STD","price":124.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Radon_R400.webp?v=1772119804","url":"https:\/\/shop.screedworks.co.uk\/products\/visqueen-radon-r400-membrane-4m-x-25m-100sqm","provider":"screedworks","version":"1.0","type":"link"}