If you're looking for a urethane foam system that will not only protect your vessel from sinking, but it can also provide added insulation, soundproofing, and structure, this liquid urethane foam kit is ideal for that. LIQUID FOAM INSULATION -Ideal for providing thermal insulation on a boat, our 4 lb Density Marine-Grade expanding foam cures very hard and rigid, with high compressive strength ideal for a number of marine and residential applications, including structural reinforcement, architectural castings, art projects, and flotation. LIGHTWEIGHT 4 LB DENSITY - Maintain a comfortable temperature inside your boat with this insulating flotation foam. Cures to a rigid, 94% closed-cell foam that resists water absorption, and is not affected by gas, oil, or solvents. SIMPLE AND EASY TO USE - This lightweight, rapidly expanding foam is easy to use, sets up quickly, and cures at room temperature. Warm conditions of 75-80°F are extremely critical, as are accurate measuring, thorough mixing, and proper venting of the area where the foam is to be applied because the foam expands tremendously by volume. Just mix one part resin and one part activator. Pour immediately into the prepared void, and leave undisturbed until cured. The expanding foam will distribute itself evenly -even into irregularly shaped areas. Specifications: Boasts 95%-98% closedcell structure with a 4-lb density Flotation range of 100-120 lbs per quart Ideal working temperature is 75-80°F or above Allows 20 seconds for mixing & pouring Can be mixed by hand or machine PACKAGE INCLUDES: 1 x Pour Foam Base A (1 Gallon) 1 x Pour Foam B (1 Gallon) Note: Always have good ventilation, and use protective eyewear and gloves when mixing and pouring foam. Make the right choice and get this foam insulation kit today!