{"product_id":"visqueen-gas-barrier-nf-400","title":"Visqueen Gas Barrier NF-400","description":"\u003ch2\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400 \u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400 is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0.4mm (400 micron) co-extruded, multi-layer thermoplastic gas membrane\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed to provide protection against the ingress of harmful levels of methane, carbon dioxide and radon in buildings. The membrane has a blue upper surface and white underside and is supplied as a 2.4m x 43.5m roll.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSuitable for use above or below reinforced cast in situ concrete floor slabs, including ground-bearing, suspended and raft slabs, as well as above precast suspended segmental subfloors such as beam and block floors. It can also function as a high-performance radon membrane and damp proof membrane, providing a versatile solution for ground gas and moisture protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/visqueennf-400.webp?v=1787139400\" alt=\"Visqueen NF-400 gas membrane for ground gas protection\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e0.4mm (400 micron) multi-layer thermoplastic gas membrane\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned to provide protection against methane, carbon dioxide and radon\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for all Characteristic Gas Situation (CS) ground gas regimes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eBDA Agrement Certificate BAB-24-339-P-A-UK\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eComplies with the methane gas transmission rate, mass per unit area and thickness requirements of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBS 8485:2015 + A1:2019\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eComplies with NHBC Foundation NF94 guidance for Type A membrane locations using a non-foil system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConforms to the specification requirements of NHBC Amber 1 and Amber 2 applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConforms to the specification requirements of BR 211:2023\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUKCA, UKNI and CE to EN 13967:2012\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCan also be used as a radon and damp proof membrane\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for installation above or below reinforced concrete floor slabs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCan be jointed by heat welding or taping, depending on the project specification\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh elongation and tear resistance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePasses watertightness testing at 2kPa for 24 hours, including after ageing and alkali exposure\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400 is designed for ground gas protection in a wide range of building applications, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGround-bearing concrete floor slabs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuspended concrete floor slabs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRaft foundations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBeam and block floors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecast suspended segmental subfloors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRadon protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMethane gas protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCarbon dioxide protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDamp proofing applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eType A membrane locations in accordance with the stated NHBC NF94 guidance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe membrane can also be used around complex detailing areas such as internal and external walls, corners, doorway thresholds, service pipes, party walls and structural columns, using suitable detailing components to maintain continuity of the gas protection layer.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Information\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eProperty\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSpecification \/ Result\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCo-extruded, multi-layer thermoplastic gas membrane\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNominal thickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.4mm (400 micron)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRoll dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.4m x 43.5m\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApproximate roll area\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e104.4m² before allowance for laps and detailing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eColour\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBlue upper surface \/ white underside\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMass per unit area\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026gt;370g\/m²\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTensile strength – machine direction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e26.3 N\/mm²\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTensile strength – cross direction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e29.4 N\/mm²\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElongation at break – machine direction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e607%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElongation at break – cross direction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e921%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eJoint strength – taped joint\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e217 N\/50mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eJoint strength – welded joint\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e405 N\/50mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWatertightness at 2kPa for 24 hours\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResistance to impact\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e400mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eLow temperature flexibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMethane gas transmission rate – membrane\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e13.2 ml\/m²\/day\/atm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMethane gas transmission rate – welded joint\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e15 ml\/m²\/day\/atm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCarbon dioxide gas transmission rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e22 ml\/m²\/day\/atm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRadon gas transmission rate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt;3.0 x 10⁻⁹ m\/s\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePuncture CBR\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1620 N\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWater vapour permeability\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.08 g\/m²\/d\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWater vapour resistance factor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1,140,000\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWater vapour diffusion equivalent air layer thickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e459m\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTechnical values above are taken from the manufacturer's August 2026 datasheet.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eApprovals and Standards\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400 has \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBDA Agrement third-party accreditation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, certificate \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBAB-24-339-P-A-UK\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The datasheet states that the product complies with the methane gas transmission rate, mass per unit area and thickness requirements of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBS 8485:2015 + A1:2019\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, is suitable for all Characteristic Gas Situation ground gas regimes, and complies with the stated NHBC Foundation NF94 guidance for Type A membrane locations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe membrane also conforms to the specification requirements of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNHBC Amber 1 and Amber 2 applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBR 211:2023\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with UKCA, UKNI and CE marking to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEN 13967:2012\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eApplication Guidance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eVisqueen Gas Barrier NF-400 should be installed with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eblue side facing upwards\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e onto a smooth, continuous substrate. Suitable substrates include grouted beam and block floors, compacted sand blinding and smooth concrete blinding. The substrate should be free from sharp protrusions, loose aggregates, voids, projections and mortar deposits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe membrane should be loose laid with sufficient overlap to allow the specified jointing method. The manufacturer recommends on-site welding of lap joints using hot wedge or hot air welding. For hand welding, an approximately 100mm overlap and approximately 35mm weld are normally achieved.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhere taped joints are specified, the sheets should be overlapped by approximately 100mm and bonded using VisqueenPro Double Sided Jointing Tape, with the joint subsequently sealed using Visqueen NF-60 or NF-150 Lap Tape as appropriate to the project specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstallation should be carried out by a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecompetent contractor experienced with this type of product\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, and the manufacturer states that installation should be subjected to third-party validation in accordance with BS 8485:2015 + A1:2019 and CIRIA C735.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAfter installation, the membrane should be protected from following trades and prolonged UV exposure using an appropriate protective layer. Care should be taken to prevent the membrane from being punctured, stretched or displaced.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen taped lap joints are used, the air temperature should not be below 5°C or falling. Where ambient temperatures exceed 25°C or are rising, the barrier should be covered immediately after installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eImportant:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Visqueen Gas Barrier NF-400 is not intended for applications where there is a risk of hydrostatic pressure. For CS4 and above site or zone characteristic gas situations, the manufacturer advises contacting the Visqueen Technical Office.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSystem Components\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSuitable system components listed by the manufacturer include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVisqueenPro Double Sided Jointing Tape, 50mm x 10m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueenPro Detailing Strip, 300mm x 10m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen TreadGUARD 1500, 1m x 2m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen TreadGUARD 300, 2m x 75m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen Ultimate Top Hat Units\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen NF-Detailing Strip, 300mm x 10m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen NF-60 Lap Tape, 60mm x 45m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVisqueen NF-150 Lap Tape, 150mm x 10m\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFAQs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat is Visqueen Gas Barrier NF-400 used for?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eIt is a ground gas membrane designed to help prevent the ingress of harmful levels of methane, carbon dioxide and radon. It can also be used as a radon and damp proof membrane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat size is a roll of Visqueen Gas Barrier NF-400?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eEach roll measures 2.4m x 43.5m, providing approximately 104.4m² of membrane before allowing for laps, joints and detailing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhich way up should Visqueen NF-400 be installed?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe membrane should be installed with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eblue side facing upwards\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e onto a smooth, continuous substrate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eCan Visqueen NF-400 be welded or taped?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eYes. The datasheet provides both heat-welded and taped jointing methods. The correct method should be determined by the project specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIs Visqueen Gas Barrier NF-400 suitable for hydrostatic pressure?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eNo. The manufacturer's datasheet specifically states that the barrier is not intended for use where there is a risk of hydrostatic pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\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\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/Visqueen_Gas_Barrier_NF-400.pdf?v=1787139484\" title=\"Visqueen Gas Barrier NF-400 Data Sheet\"\u003eData sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Visqueen","offers":[{"title":"2.4m x 43.5m","offer_id":57393579360631,"sku":"VISQUEENGBNF-400","price":492.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/visqueennf-400.webp?v=1787139400","url":"https:\/\/clevershieldcoatings.co.uk\/products\/visqueen-gas-barrier-nf-400","provider":"Clever Shield - Asset Protection","version":"1.0","type":"link"}