4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit): Amazon.com: Industrial & Scientific
Vega Bond V200 Closed Cell Spray Foam Insulation Kit. 2 Part Foam Sealant 200BF | eBay
2 Lb Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit): Amazon.com: Industrial & Scientific
Vega Bond V200 Closed Cell Spray Foam Insulation Kit. 2 Part Foam Sealant 200BF | eBay