Coating entire hull with expanding foam, cured foam hardens to 3", purpose is not for flotation but to stiffen and strengthen hull… | Expanding foam, Boat, Kayaking
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Amazon.com: TotalBoat Flotation Foam - 2 Part Expanding Polyurethane Marine Pour Foam for Boat Floatation, Insulation and Soundproofing (2 LB Density, 2 Gallon Kit) : Sports & Outdoors
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Amazon.com: TotalBoat Flotation Foam - 2 Part Expanding Polyurethane Marine Pour Foam for Boat Floatation, Insulation and Soundproofing (2 LB Density, 2 Gallon Kit) : Sports & Outdoors
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Fiberglass Supply Depot 4 Lb. Density Expanding Foam Kit: 2 Part Closed Cell Polyurethane Liquid Foam for Boat and Dock Flotation, Insulation, Soundproofing and Filling Voids - Gallon Kit - Walmart.com
How to pour expanding flotation foam in a boat hull - How to Build a Boat Part 10 - YouTube