{"title":"Air \u0026 Vapour Control","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe range covers air and vapour control layers (AVCLs) and vapour barriers, vapour checks, and the sealing tapes used to form continuous, airtight laps, edges and penetrations. It is worth being clear on the difference between the main membrane types. A vapour barrier or AVCL offers high resistance to vapour and is close to impermeable, making it suitable where moisture needs to be held back as fully as possible. A vapour check is a vapour retarder, designed to slow rather than stop the passage of vapour, which suits build ups that need to manage moisture while allowing a degree of movement. Choosing the right type for the construction is key to a build up that performs as intended.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMany air and vapour control layers are also specified with their reaction to fire in mind, with fire-rated and A2 classified options available for projects where non-combustible materials are required. Whatever the application, pairing the membrane with the correct sealing tape is what gives a reliable, continuous control layer across the whole envelope.\u003c\/p\u003e","products":[{"product_id":"visqueen-a2-vapour-barrier","title":"Visqueen A2 Vapour Barrier","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eVisqueen A2 Vapour Barrier is a multi-layer reinforced aluminium air and vapour control layer (AVCL) used to control the passage of air and moisture vapour through the building envelope. It has a reflective aluminium finish on the upper surface and a matt aluminium surface on the reverse, and is suitable for use in floor, wall and roof constructions.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe barrier achieves an A2-s1,d0 reaction to fire classification to BS EN 13501-1:2018, so it is well suited to projects where non-combustible materials are specified, and it is compliant with UK Building Regulations. It is UKCA, UKNI and CE marked to EN 13984:2013, helping meet Building Regulation and warranty provider requirements. The membrane is supplied as a single wound roll rather than folded, which helps keep it clean and straightforward to lay out on site.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eUKCA, UKNI and CE marked to EN 13984:2013, meeting Building Regulation and warranty provider requirements\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eReflective aluminium upper face and matt aluminium reverse\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eAchieves an A2-s1,d0 reaction to fire classification to BS EN 13501-1:2018, compliant with UK Building Regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied as a single wound roll - not folded\u003c\/li\u003e\n\u003cli\u003eMulti-layer reinforced aluminium\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Visqueen","offers":[{"title":"Default Title","offer_id":57830799606092,"sku":"BMD6679","price":454.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/visqueen-vapour-control-visqueen-a2-vapour-barrier-1244781525.jpg?v=1781689275"},{"product_id":"visqueen-class-b-fr-vapour-check","title":"Visqueen Class B FR Vapour Check","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eVisqueen Class B FR Vapour Check is a modified flame retardant polyethylene air and vapour control layer (AVCL), orange tinted and semi transparent, with a 0.125mm (500 gauge) thickness. Used in floor, wall and roof constructions, it provides air tightness and resistance to water vapour, helping to reduce the risk of condensation within the build up.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIts Class B-s1,d0 reaction to fire classification surpasses national Building Regulation requirements for air and vapour control layers, making it suitable for all building heights, including residential buildings over 18m. The membrane is UKCA, UKNI and CE marked to EN 13984:2013, and has been third party tested to EN 13501-1:2018 as a complete AVCL system, including its sealing tapes. The 2.45m wide roll is well suited to wall applications, allowing rapid installation while reducing the need for horizontal lap joints.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eClass B-s1,d0 reaction to fire classification, exceeding national Building Regulation requirements for AVCLs and suitable for all building heights, including residential above 18m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eUKCA, UKNI and CE marked to EN 13984:2013\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eProvides air tightness and water vapour resistance, reducing the risk of condensation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Modified flame retardant polyethylene AVCL\u003c\/li\u003e\n\u003cli\u003eAppearance: Orange tinted, semi transparent\u003c\/li\u003e\n\u003cli\u003e2.45m x 50m (centre-folded), 4m x 50m (multi-folded)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Visqueen","offers":[{"title":"2.45m","offer_id":57830872187212,"sku":"BMD6682","price":204.06,"currency_code":"GBP","in_stock":true},{"title":"4m","offer_id":57830872219980,"sku":"BMD6681","price":333.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/visqueen-vapour-control-visqueen-class-b-fr-vapour-check-1244792885.jpg?v=1781696473"},{"product_id":"visqueen-fr-vapour-tape","title":"Visqueen FR+ Vapour Tape","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eVisqueen FR+ Vapour Tape is a single sided sealing tape developed as part of the Visqueen A2 Vapour Barrier system. It consists of a black surfaced composite foil and glass fibre carrier coated with a high bond, fire resistant self adhesive acrylic, with the adhesive protected by a removable release film until use.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe tape is used to seal the lap joints and perimeter junctions of the Visqueen A2 Vapour Barrier, helping to maintain a continuous, airtight control layer across the envelope. As part of that system it contributes to the A2-s1,d0 reaction to fire classification to BS EN 13501-1:2018, making it suitable for projects where non-combustible materials are specified.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003ePart of the Visqueen A2 Vapour Barrier system, achieving an A2-s1,d0 reaction to fire classification to BS EN 13501-1:2018\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eSingle sided black composite foil and glass fibre carrier\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eHigh bond, fire resistant acrylic adhesive\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal\"\u003eRemovable release film protecting the adhesive until use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThere's also a conformity condition on the datasheet: to maintain the A2-s1,d0 classification, the tape coverage must not exceed 10% of the area of the A2 Vapour Barrier.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Visqueen","offers":[{"title":"Default Title","offer_id":57831063552332,"sku":"BMD6680","price":52.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/visqueen-frplus-vapour-tape_ad0df191-037d-40fd-8ab4-5b2e3e8fb9e3.jpg?v=1781693415"},{"product_id":"visqueen-fr-double-sided-vapour-tape","title":"Visqueen FR Double Sided Vapour Tape","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eVisqueen FR Double Sided Vapour Tape is a white double sided tape coated with a flame retardant acrylic adhesive, with a removable release film protecting the adhesive until use. It is designed to bond a range of Visqueen air and vapour control layers (AVCLs) to metal or timber structural components such as studs and noggins, helping hold the membrane securely in position during the build.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eAs a double sided tape its role is fixing rather than lap sealing, working alongside the single sided vapour tape that seals the membrane laps. Together they form part of the complete Visqueen AVCL system.\u003c\/p\u003e","brand":"Visqueen","offers":[{"title":"Default Title","offer_id":57831527940428,"sku":"BMD6683","price":31.79,"currency_code":"GBP","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/collections\/a2_vapour_visqueen.jpg?v=1781683512","url":"https:\/\/www.constructionsuppliesuk.co.uk\/collections\/air-vapour-control.oembed","provider":"Construction Supplies UK","version":"1.0","type":"link"}