4 lb Density Marine-Grade expanding foam: Closed cell boat pour foam, perfect for flotation, insulation, soundproofing, or filling voids. This boat foam is U.S. Coast Guard approved and is ideal for use in dock floats and boat parts. Easy mixing and handling: 2-part liquid boat pour foam with a simple 1:1 Mix Ratio to produce the expanding polyurethane foam. Starts foaming after 45 seconds of mixing, and 7 minutes to full expansion. Build multiple layers by pouring the mix in separate batches to form strong bonds between layers. 94% Rigid Closed-Cell Foam: Once the foam is cured, it helps prevent moisture absorption and won’t be affected by solvents, oil or gas. The cured foam can be cut to any desired shape or be coated with polyester, epoxy, vinyl ester resin and fiberglass. High-Quality polyurethane foam: This waterproof foam sealant has a buoyancy of approximately 300 pounds per gallon foot, and a density of 4.0 lbs/ft3. This product does not contain any CFC blowing agents. Package content: Our Fiberglass Warehouse 2-part Pour Foam includes 1 gallon of Part A and 1 gallon of Part B for a total of 2 gallons. It is a two liquid resin component system that produces foam when mixing part A and B together.

Fiberglass Warehouse 4 lb Density Pour Foam is perfect for flotation, insulation, soundproofing, or filling voids.

It's Marine-Grade, approved by the U.S. Coast Guard, which makes it ideal for use in dock floats, boats or any marine parts in general.

The 94% Rigid Closed-Cell Foam helps prevent water and moisture absorption and once cured, it won't be affected by solvents, oil or gas.

The expanding foam is easy to mix and handle, with a 1:1 Mix Ratio, 2-part liquid resin component system and that produces foam when mixed together. Starts foaming after 45 seconds of mixing, and 7 minutes to full expansion. Build multiple layers by pouring the mix in separate batches to form strong bonds between layers. 

It can be cut to any desired shape or be coated with polyester, epoxy, or vinyl ester resins.

Pour Foam is a polyurethane, fire retarded, rigid foam system that is designed to meet a variety of requirements without sacrificing product quality. It is waterproof and will have a buoyancy of approximately 75 pounds per cubic foot, and a density of 4.0 lbs/ft3. 

The unique handling characteristics of the Boat Pour Foam series systems provide ease of mixing by hand or machine and produce a uniform product with excellent cell structure. 

This product does not contain any cfc blowing agents.