{"product_id":"everbuild-firefoam-b1-gun-grade-750ml-12-box","title":"Everbuild B1 Fire Rated Expanding Foam Gun Grade 750ml","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eEverbuild B1 Fire Rated Expanding Foam Gun Grade is a one-component polyurethane foam designed for professional application using a foam gun. It provides a high-performance fire-resistant seal for construction joints, service penetrations, door frames, and window surrounds, forming a durable barrier against fire, smoke, and air movement. \u003cbr\u003e\u003cbr\u003eThe foam expands up to 50 times its original volume, filling irregular or wide cavities that conventional fillers cannot reach. Once cured, it delivers excellent adhesion to most building materials, including brick, concrete, plaster, metal, and timber. \u003cbr\u003e\u003cbr\u003eIts formulation allows for cutting, sawing, or plastering just one hour after application, supporting efficient progress on active job sites. The 750ml size offers optimal yield for professional use, expanding to approximately 40 litres when fully cured.\u003cbr\u003e\u003cbr\u003eThe gun-grade format offers precise control, reduced waste, and cleaner application compared with hand-held variants.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Fire Rating\u003c\/strong\u003e: Classified to DIN 4102 Part 1, achieving Class B1 performance for up to four hours’ fire resistance when properly installed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Gap Filling\u003c\/strong\u003e: Expands up to 50 times its can volume, ensuring complete coverage in irregular voids and joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Curing\u003c\/strong\u003e: Cures rapidly to allow trimming or plastering within one hour of application, minimising downtime on site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong Adhesion\u003c\/strong\u003e: Bonds securely to most common construction materials including masonry, metal, and timber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcoustic Insulation\u003c\/strong\u003e: Closed-cell structure provides effective sound dampening in addition to its thermal and fire-resistant properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGun-Grade Application\u003c\/strong\u003e: Designed for use with a foam applicator gun, providing greater accuracy, reduced overspill, and more controlled output than a hand-held version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize – 750ml Can\u003c\/strong\u003e: Expands to approximately 40 litres of cured foam, providing extensive coverage from a single unit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor and Window Installation\u003c\/strong\u003e: Creates a fire-rated seal around frames to prevent smoke and flame spread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Penetrations\u003c\/strong\u003e: Fills gaps around pipes, conduits, and cable entries in walls or floors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructural Gaps and Cavities\u003c\/strong\u003e: Suitable for sealing irregular joints or voids in concrete, stone, brick, and plaster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal and Acoustic Insulation\u003c\/strong\u003e: Used behind cladding, soffit, and barge boards to reduce heat loss and noise transmission.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eInstallation Guidance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Preparation\u003c\/strong\u003e: Ensure surfaces are clean, sound, and lightly moistened to promote adhesion and controlled expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Method\u003c\/strong\u003e: Attach the can to a compatible foam gun, shake vigorously, and apply foam with controlled trigger pressure to fill voids evenly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuring and Finishing\u003c\/strong\u003e: Allow to cure for approximately one hour before cutting, trimming, or plastering over the foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage and Handling\u003c\/strong\u003e: Store upright in original packaging at the recommended temperature, away from direct sunlight or frost.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eCompliance \u0026amp; Performance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Classification\u003c\/strong\u003e: Meets DIN 4102 Part 1 requirements, rated Class B1 with fire resistance up to four hours (BS476 Part 20:1987).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Certification\u003c\/strong\u003e: Independently tested under Warrington Fire Report Nos. 160899 and 151680.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Composition\u003c\/strong\u003e: One-component polyurethane formulation with a medium-fine closed-cell structure for strength and stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Range\u003c\/strong\u003e: Expands to approximately 40 litres per 750ml can, with excellent adhesion and low post-expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant Note\u003c\/strong\u003e: Use only in well-ventilated areas and avoid contact with skin or eyes during application. Always observe fire safety and curing guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Everbuild","offers":[{"title":"Default Title","offer_id":53771410833519,"sku":"1003018","price":16.45,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/9784\/4591\/files\/Everbuild_B1_Fire_Rated_Expanding_Foam_Gun_Grade_750ml_-_Photo.png?v=1783758297","url":"https:\/\/supplyyard.co.uk\/products\/everbuild-firefoam-b1-gun-grade-750ml-12-box","provider":"Supply Yard","version":"1.0","type":"link"}