{"product_id":"6-lb-density-expanding-pour-foam-1-gallon-kit-high-buoyancy","title":"6 Lb. Density Expanding Pour Foam 1 Gallon Kit - High Buoyancy","description":"\u003cp\u003eIn this review the 6 Lb. Density Expanding Pour Foam 1 Gallon Kit is evaluated for hobbyists and marine repairers who need a pourable, closed cell polyurethane that cures strong and stays stable under laminating resins. The bottom line: this kit is best for anyone who needs reliable buoyancy or structural fill that can be carved and laminated afterwards. The reviewer found the equal-part, 1\/2 gallon A and B mix straightforward to measure and quick to reach handling strength, with the main caveat being sensitivity to working temperature.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eTwo-part polyurethane:\u003c\/strong\u003e The foam mixes in equal parts Part A and Part B to create a closed cell foam suitable for flotation and filling voids.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e6 lb. density kit:\u003c\/strong\u003e The 1 gallon kit yields about 1.5 cubic ft of foam, offering good balance between strength and buoyancy for boat and dock applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLaminatable when cured:\u003c\/strong\u003e Once fully cured the foam accepts polyester, epoxy, or vinyl ester resin without melting, allowing structural reinforcement or fairing.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast working window:\u003c\/strong\u003e Working time before foaming is around 45 seconds and full expansion occurs in about 5 minutes, enabling quick pours and early shaping.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile for sculpting:\u003c\/strong\u003e The 6 lb. density works well for floating decoys, taxidermy, carving, and other casting or filling tasks where a firmer closed cell foam is preferred.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is aimed at boat owners repairing voids, builders adding flotation to docks, and hobbyists who carve or cast firm flotation pieces. Its ability to be laminated over with common resins makes it useful for restorations where a composite face is required.\u003c\/p\u003e\n\u003cp\u003eThose who need large-scale insulation for conditioned spaces or who expect dramatically higher expansion at low temperatures should look elsewhere; expansion and yield are temperature sensitive and the product performs best at about 75 to 80 F or higher.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eProvides dependable buoyancy with a mid-high density closed cell structure suitable for marine uses.\u003c\/li\u003e\n \u003cli\u003eCures quickly and can be laminated with polyester, epoxy, or vinyl ester for structural finishes.\u003c\/li\u003e\n \u003cli\u003eGood for carving and sculpting projects such as decoys or taxidermy due to its firmer 6 lb. density.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eExpansion rate and final volume are temperature dependent; yields can be lower below 75 F and accurate measuring is critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003e2-part polyurethane expanding pour foam\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e6 lb. (closed cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKit volume\u003c\/td\u003e\n\u003ctd\u003e1 gallon kit (1\/2 gal Part A + 1\/2 gal Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eYield\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.5 cubic ft\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWorking time\u003c\/td\u003e\n\u003ctd\u003eAbout 45 seconds before foaming\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFull expansion time\u003c\/td\u003e\n\u003ctd\u003eAbout 5 minutes (temperature dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible resins\u003c\/td\u003e\n\u003ctd\u003ePolyester, epoxy, vinyl ester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThis 6 lb. density expanding pour foam kit is a practical choice for small-format boat repairs, dock flotation additions, and carving or sculpting projects where a laminatable closed cell foam is needed. It offers good value when mixed and poured within recommended temperatures, delivering quick cures, reliable buoyancy, and compatibility with standard resins for finished surfaces.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow much foam does the 1 gallon kit produce?\u003c\/strong\u003e\u003cbr\u003eThe kit produces about 1.5 cubic ft of cured foam when mixed as directed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the cured foam be laminated over?\u003c\/strong\u003e\u003cbr\u003eYes, once fully cured it can be laminated with polyester, epoxy, or vinyl ester without melting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes temperature affect the expansion?\u003c\/strong\u003e\u003cbr\u003eYes, expansion rates and final volume are temperature sensitive; ideal working temperature is about 75 to 80 F or above.\u003c\/p\u003e","brand":"Fiberglass Supply Depot","offers":[{"title":"Default Title","offer_id":48619757830363,"sku":"B0BBH4XQ9P","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71cRT28bDOL._SL1500.jpg?v=1778494982","url":"https:\/\/gearmusthave.com\/products\/6-lb-density-expanding-pour-foam-1-gallon-kit-high-buoyancy","provider":"GearMustHave","version":"1.0","type":"link"}