{"product_id":"riw-dpm-blue-formerly-gas-seal-blue-2m-x-50m","title":"RIW DPM Blue ( Formerly Gas Seal Blue ) 2m x 50m","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\" data-end=\"54\" data-start=\"0\" data-section-id=\"dlthmc\"\u003eRIW Gas Seal Blue Gas Barrier \u0026amp; Damp Proof Membrane\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-end=\"714\" data-start=\"56\"\u003eRIW Gas Seal Blue is a high-performance three-layer polyethylene gas barrier and damp proof membrane designed to protect buildings against moisture, radon, low-level methane and carbon dioxide. Reinforced with a polypropylene grid for added strength and durability, it provides combined gas protection and damp proofing in a single membrane, eliminating the need for a separate DPM in many applications. Suitable for use beneath ground-bearing concrete slabs and above suspended beam and block floors, Gas Seal Blue delivers reliable long-term protection for residential, commercial and industrial construction projects.\u003c\/p\u003e\n\u003cp data-end=\"1245\" data-start=\"716\"\u003eManufactured from virgin polyethylene rather than recycled materials, the membrane offers outstanding tensile strength, puncture resistance and dimensional stability. The distinctive blue and white construction provides simple on-site quality control, while its comprehensive sealing system ensures airtight lap joints and continuity throughout the building envelope. Gas Seal Blue is BBA Approved and complies with the latest guidance from BS 8485, BRE and CIRIA for gas protection systems.\u003c\/p\u003e\n\u003cp data-end=\"1245\" data-start=\"716\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/RIWDPMBlue_FormerlyGasSealBlue_2mx50m.png?v=1784558750\" alt=\"RIW Gas Seal Blue membrane\"\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"1262\" data-start=\"1247\" data-section-id=\"17xbmye\"\u003eKey Benefits\u003c\/h3\u003e\n\u003cul data-end=\"1767\" data-start=\"1264\"\u003e\n\u003cli data-end=\"1310\" data-start=\"1264\" data-section-id=\"14f4sa5\"\u003eCombined gas barrier and damp proof membrane\u003c\/li\u003e\n\u003cli data-end=\"1363\" data-start=\"1311\" data-section-id=\"f06lsp\"\u003eProtects against radon, methane and carbon dioxide\u003c\/li\u003e\n\u003cli data-end=\"1408\" data-start=\"1364\" data-section-id=\"1p2dbz1\"\u003ePrevents moisture and water vapour ingress\u003c\/li\u003e\n\u003cli data-end=\"1459\" data-start=\"1409\" data-section-id=\"rg7lg4\"\u003eThree-layer reinforced polyethylene construction\u003c\/li\u003e\n\u003cli data-end=\"1495\" data-start=\"1460\" data-section-id=\"15a25vd\"\u003eManufactured from virgin material\u003c\/li\u003e\n\u003cli data-end=\"1548\" data-start=\"1496\" data-section-id=\"7xvdqs\"\u003eSeparate damp proof membrane not normally required\u003c\/li\u003e\n\u003cli data-end=\"1583\" data-start=\"1549\" data-section-id=\"15ayqrk\"\u003eHigh tensile and tear resistance\u003c\/li\u003e\n\u003cli data-end=\"1613\" data-start=\"1584\" data-section-id=\"ye2k31\"\u003eRobust joint sealing system\u003c\/li\u003e\n\u003cli data-end=\"1633\" data-start=\"1614\" data-section-id=\"4n23fr\"\u003eWeldable membrane\u003c\/li\u003e\n\u003cli data-end=\"1677\" data-start=\"1634\" data-section-id=\"10djj97\"\u003eBlue and white layers for quality control\u003c\/li\u003e\n\u003cli data-end=\"1728\" data-start=\"1678\" data-section-id=\"1usluyd\"\u003eSuitable for suspended and ground-bearing floors\u003c\/li\u003e\n\u003cli data-end=\"1743\" data-start=\"1729\" data-section-id=\"f7ot7m\"\u003eBBA Approved\u003c\/li\u003e\n\u003cli data-end=\"1767\" data-start=\"1744\" data-section-id=\"1vehek0\"\u003eCE Marked to EN 13967\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1784\" data-start=\"1769\" data-section-id=\"mu966k\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-end=\"2087\" data-start=\"1786\"\u003e\n\u003cli data-end=\"1810\" data-start=\"1786\" data-section-id=\"5vq4fc\"\u003eGas protection systems\u003c\/li\u003e\n\u003cli data-end=\"1846\" data-start=\"1811\" data-section-id=\"1hi1emd\"\u003eGround floor damp proof membranes\u003c\/li\u003e\n\u003cli data-end=\"1870\" data-start=\"1847\" data-section-id=\"skix11\"\u003eRadon barrier systems\u003c\/li\u003e\n\u003cli data-end=\"1891\" data-start=\"1871\" data-section-id=\"1jrj2mt\"\u003eMethane protection\u003c\/li\u003e\n\u003cli data-end=\"1919\" data-start=\"1892\" data-section-id=\"14akeoa\"\u003eCarbon dioxide protection\u003c\/li\u003e\n\u003cli data-end=\"1951\" data-start=\"1920\" data-section-id=\"d2t17g\"\u003eGround-bearing concrete slabs\u003c\/li\u003e\n\u003cli data-end=\"1985\" data-start=\"1952\" data-section-id=\"ywnl29\"\u003eSuspended beam and block floors\u003c\/li\u003e\n\u003cli data-end=\"2011\" data-start=\"1986\" data-section-id=\"1pxrjk6\"\u003ePrecast concrete floors\u003c\/li\u003e\n\u003cli data-end=\"2038\" data-start=\"2012\" data-section-id=\"14gx95z\"\u003eResidential construction\u003c\/li\u003e\n\u003cli data-end=\"2064\" data-start=\"2039\" data-section-id=\"pt286s\"\u003eCommercial developments\u003c\/li\u003e\n\u003cli data-end=\"2087\" data-start=\"2065\" data-section-id=\"qtmk7e\"\u003eIndustrial buildings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"2113\" data-start=\"2089\" data-section-id=\"1uhri7u\"\u003eTechnical Information\u003c\/h3\u003e\n\u003cul data-end=\"2694\" data-start=\"2115\"\u003e\n\u003cli data-end=\"2175\" data-start=\"2115\" data-section-id=\"9gq8lz\"\u003eProduct Type: Reinforced polyethylene gas barrier membrane\u003c\/li\u003e\n\u003cli data-end=\"2240\" data-start=\"2176\" data-section-id=\"uqs9yy\"\u003eMaterial: Three-layer LDPE with polypropylene reinforcing grid\u003c\/li\u003e\n\u003cli data-end=\"2263\" data-start=\"2241\" data-section-id=\"aqh1kc\"\u003eColour: Blue \/ White\u003c\/li\u003e\n\u003cli data-end=\"2282\" data-start=\"2264\" data-section-id=\"13mhsfj\"\u003eThickness: 0.5mm\u003c\/li\u003e\n\u003cli data-end=\"2304\" data-start=\"2283\" data-section-id=\"v1mmy2\"\u003eRoll Size: 2m × 50m\u003c\/li\u003e\n\u003cli data-end=\"2331\" data-start=\"2305\" data-section-id=\"1hfq03s\"\u003eCoverage per Roll: 100m²\u003c\/li\u003e\n\u003cli data-end=\"2367\" data-start=\"2332\" data-section-id=\"1jjr1rw\"\u003eWeight: 275g\/m² (27.5kg per roll)\u003c\/li\u003e\n\u003cli data-end=\"2386\" data-start=\"2368\" data-section-id=\"vbauvx\"\u003eLap Width: 150mm\u003c\/li\u003e\n\u003cli data-end=\"2442\" data-start=\"2387\" data-section-id=\"1s9mt4j\"\u003eTensile Strength:\n\u003cul data-end=\"2442\" data-start=\"2409\"\u003e\n\u003cli data-end=\"2424\" data-start=\"2409\" data-section-id=\"8kb2p6\"\u003eMD: 500N\/50mm\u003c\/li\u003e\n\u003cli data-end=\"2442\" data-start=\"2427\" data-section-id=\"cylkea\"\u003eCD: 470N\/50mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2488\" data-start=\"2443\" data-section-id=\"7bxwgj\"\u003eRadon Permeability: 1.5 × 10⁻¹¹ m² s⁻¹ Pa⁻¹\u003c\/li\u003e\n\u003cli data-end=\"2537\" data-start=\"2489\" data-section-id=\"1ss8syz\"\u003eMethane Permeability: 1.92 × 10⁻¹⁷ m² s⁻¹ Pa⁻¹\u003c\/li\u003e\n\u003cli data-end=\"2593\" data-start=\"2538\" data-section-id=\"1xk7njw\"\u003eCarbon Dioxide Permeability: 1.64 × 10⁻¹⁶ m² s⁻¹ Pa⁻¹\u003c\/li\u003e\n\u003cli data-end=\"2614\" data-start=\"2594\" data-section-id=\"1iub6l4\"\u003eStandard: EN 13967\u003c\/li\u003e\n\u003cli data-end=\"2694\" data-start=\"2615\" data-section-id=\"pf92vd\"\u003eCertification: BBA Approved \u0026amp; CE Marked\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"2725\" data-start=\"2696\" data-section-id=\"1r8frcv\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp data-end=\"2766\" data-start=\"2727\"\u003e\u003cstrong data-end=\"2766\" data-start=\"2727\"\u003eWhat is RIW Gas Seal Blue used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2884\" data-start=\"2768\"\u003eIt provides combined damp proofing and protection against radon, methane and carbon dioxide beneath concrete floors.\u003c\/p\u003e\n\u003cp data-end=\"2927\" data-start=\"2886\"\u003e\u003cstrong data-end=\"2927\" data-start=\"2886\"\u003eCan it replace a damp proof membrane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"3063\" data-start=\"2929\"\u003eYes. Gas Seal Blue functions as both a gas barrier and damp proof membrane, removing the need for a separate DPM in many applications.\u003c\/p\u003e\n\u003cp data-end=\"3095\" data-start=\"3065\"\u003e\u003cstrong data-end=\"3095\" data-start=\"3065\"\u003eWhere can it be installed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"3223\" data-start=\"3097\"\u003eIt is suitable beneath ground-bearing reinforced concrete slabs and above suspended beam and block or precast concrete floors.\u003c\/p\u003e\n\u003cp data-end=\"3251\" data-start=\"3225\"\u003e\u003cstrong data-end=\"3251\" data-start=\"3225\"\u003eHow are joints sealed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"3380\" data-start=\"3253\"\u003eAdjacent sheets should overlap by 150mm and be sealed using RIW Gas Seal Tape and Lap Tape to maintain an airtight gas barrier.\u003c\/p\u003e\n\u003cp data-end=\"3417\" data-start=\"3382\"\u003e\u003cstrong data-end=\"3417\" data-start=\"3382\"\u003eIs RIW Gas Seal Blue certified?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"3556\" data-start=\"3419\"\u003eYes. It is BBA Approved and CE Marked to EN 13967 for use as a gas barrier and damp proof membrane.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1dnzvko\" data-start=\"0\" data-end=\"53\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eDownloads\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-end=\"3050\" data-start=\"2932\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/RIW_Gas_Seal_BlueNov14-tds.pdf?v=1784558786\" title=\"RIW DPM Blue Data Sheet\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"RIW","offers":[{"title":"2m x 50m Roll","offer_id":57313085030775,"sku":"RIWDPM2X50","price":680.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/RIWDPMBlue_FormerlyGasSealBlue_2mx50m.png?v=1784558750","url":"https:\/\/clevershieldcoatings.co.uk\/products\/riw-dpm-blue-formerly-gas-seal-blue-2m-x-50m","provider":"Clever Shield - Asset Protection","version":"1.0","type":"link"}