Pin 1. Speed - RC Gas Boats - Great Stuff Foam In Hull. You can see what I am talking about in this photo (click on the thumbnail) - it's the yellowish stuff … It is not water proof, it will soak up tons of water and hold it, but since I'm not using it to fill a void it will work for what I want, filling gaps up to one inch (advertised on the can) and gluing the foam … Is it a real expectation to get more than one use from the can? Tweet. 2 LB Density Urethane Foam (U.S. Coast Guard Compliant Marine Foam) Common Applications: Our 2LB density marine foam is recommended for void filling in nonstructural applications. I bought the boat used, although it was in nearly new condition. i had to replace the reciever and servos cause water got into the radio box.....well i put great stuff foam … i got a aquacraft V24 gas powered boat. - i got a aquacraft V24 gas powered boat. It appears that they used "Great Stuff" exanding foam to glue the bulkhead together. Flotation foam is typically applied to boat hulls either through open or closed-cell mats and blocks or through special marine pour foam which forms a mechanical seal with the hull of boats. i recently flipped it over in the water and it bobbed nose up for a few hours before i got to it. • Great Stuff™ Gaps & Cracks* — Fills, seals and insulates gaps up to 1 inch. It should be a lot cheaper than using Great Stuff. Great Stuff (GS) is an expanding foam sealer sold at home centers as a quick and easy way to stop air leaks into your home. You don't want a fast expanding foam like Great Stuff large gap because it will push … * This multipurpose formulation expands up to 1 inch to … This product can be poured underneath decks and inside cavities where a lightweight flotation foam … GREAT STUFF™ Gaps & Cracks is a minimal expansion polyurethane insulating foam sealant that fills, seals and insulates gaps up to 1 inch. I can never get a second use out of it. GREAT STUFF™ Outdoor Insulating Foam Sealant is a ready-to-use, insulating foam sealant—specifically formulated for both indoor and outdoor use. • Great Stuff… Always use closed cell foam when building or renovating boats other foam can take on water over time and therefore loses buoyancy. Each of these … They sell a slow rise foam for injecting into closed walls. The original outfitting is foam bulkhead. Meet the Great Stuff™ Foam Sealant Family: Our line of foam sealants are a simple-to-use, cost-effective money-saving solution for any DIYer. i had to replace the reciever and servos cause water got into the radio box.....well i put great stuff foam … It expands to take the shape of cracks and voids to form a … Am I doing something wrong or should I just resign to the fact that I should throw away the can after the … This idea has been used in the BB industry since the twinpack foam came on the market in the early 70s great. 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