{"product_id":"newton-cdm-508r-cavity-drain-membrane-gas-barrier","title":"Newton CDM 508R Cavity Drain Membrane \u0026 Gas Barrier","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel stronger enable-updated-hr-color\" id=\"model-response-message-contentr_935ab606bcd817b7\" aria-live=\"polite\" aria-busy=\"false\" dir=\"ltr\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNewton CDM 508R is a professional-grade, 8mm-stud cavity drain membrane that serves a dual purpose as both a \"Type C\" waterproofing system and a robust barrier against ground gases and hydrocarbons. It is significantly heavier and stronger (700g\/m²) than standard 8mm membranes, providing enhanced durability and long-term stability. When installed as part of the Newton CDM System, it creates an air gap between the structure and the internal finish, allowing water to be managed and directed to a drainage system. It is BBA-certified and has been independently tested for resistance against radon, methane, CO2, and liquid hydrocarbons, making it an essential component for projects requiring both waterproofing and gas protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"3,0,0\"\u003eDual-action protection: functions as a high-performance waterproofing membrane and a certified gas barrier\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,1,0\"\u003eExceptional durability with a 30-year guarantee and a life expectancy equal to the design life of the building\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,2,0\"\u003eHigh compressive strength makes it suitable for use on both walls and floors under heavy loading\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,3,0\"\u003eChemically inert and resistant to bacteria, fungi, and aggressive mineral\/organic acids\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,4,0\"\u003eQuick to install and requires minimal surface preparation compared to traditional tanking systems\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"5,0,0\"\u003eAvailable in two roll sizes: 2.0m x 20m (40m²) and 2.4m x 20m (48m²)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,1,0\"\u003eProduct codes: M2R (2.0m) and M1R (2.4m)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,2,0\"\u003eRecognized as the primary membrane for the Newton PAC-500 combined gas and waterproofing system\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,3,0\"\u003eBBA Certification Number: 94\/3010\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,4,0\"\u003eFeatures a white finish, providing a clean and bright substrate for internal finishes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Newton Waterproofing","offers":[{"title":"2m x 20m","offer_id":57218807431500,"sku":"BM06084","price":176.05,"currency_code":"GBP","in_stock":true},{"title":"2.4m x 20m","offer_id":57218807464268,"sku":"BM06085","price":218.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/newton-waterproofing-newton-cdm-508r-cavity-drain-membrane-gas-barrier-1232467328.jpg?v=1776255551","url":"https:\/\/www.constructionsuppliesuk.co.uk\/products\/newton-cdm-508r-cavity-drain-membrane-gas-barrier","provider":"Construction Supplies UK","version":"1.0","type":"link"}