{"product_id":"everbuild-firefoam-b2-gun-grade-750ml","title":"Everbuild B2 Fire Rated Expanding Foam Gun Grade 750ml","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eEverbuild B2 Fire Rated Expanding Foam is a one-component polyurethane foam designed for professional application using a foam gun. It provides a medium-performance fire-resistant seal for construction joints, service penetrations, door frames, and window surrounds, forming a durable barrier against flame, smoke, and air movement for up to two hours’ protection.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThe foam expands approximately 1.5 to 2 times its original volume, filling smaller to medium cavities where a controlled, economical expansion is preferred. Once cured, it delivers excellent adhesion to most building materials, including brick, concrete, plaster, metal, and timber.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eIts formulation allows for cutting, sawing, or plastering just one hour after application at working temperatures between +5°C and +25°C, supporting efficient progress on active job sites. The 750ml size offers optimal yield for professional use, expanding to approximately 1.2 to 1.5 litres when fully cured.\u003c\/p\u003e\u003cp\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\u003eModerate Fire Rating\u003c\/strong\u003e: Classified to DIN 4102 Part 1, achieving Class B2 performance for up to two hours’ fire resistance when correctly installed in suitable configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControlled Expansion\u003c\/strong\u003e: Expands 1.5 to 2 times its can volume, providing a manageable fill for general-purpose sealing without excessive overflow.\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 1.2 to 1.5 litres of cured foam, providing efficient 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 offering up to two hours’ protection around frames to reduce 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 smaller or moderate-width joints 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\u003cli\u003e\n\u003cstrong\u003eJoint Systems\u003c\/strong\u003e: Recommended for use with Everbuild FIREMATE Intumescent Sealant to maximise fire resistance in rated assemblies.\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\u003eTemperature Range\u003c\/strong\u003e: Apply only within +5°C to +25°C, with 20°C as the optimal working temperature.\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 and BS476 Part 20 standards, rated Class B2 with up to two hours’ fire resistance in appropriate configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Certification\u003c\/strong\u003e: Tested under BS476 Part 20 fire conditions for two-hour classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Composition\u003c\/strong\u003e: One-component polyurethane formulation with a medium-density closed-cell structure for strength and controlled expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Range\u003c\/strong\u003e: Expands 1.5 to 2 times its original volume, providing stable, low-stress fill with excellent adhesion.\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, curing, and temperature guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Everbuild","offers":[{"title":"Default Title","offer_id":53771411030127,"sku":"1003019","price":15.16,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/9784\/4591\/files\/Everbuild_B2_Fire_Rated_Expanding_Foam_Gun_Grade_750ml_-_Photo.png?v=1783758300","url":"https:\/\/supplyyard.co.uk\/products\/everbuild-firefoam-b2-gun-grade-750ml","provider":"Supply Yard","version":"1.0","type":"link"}