2 Gallon Kit 5 lb Density Fiberlay Premium Polyurathane Pour Foam which is Coast Guard Approved. 2 Gal. Kit will yield 2.25 cubic feet of foam and the 5# Foam Supports 25 lbs. / cubic foot. This Coast Guard Approved, pour in place foam provides excellent flotation and strength under floors. It is not affected by oil or gasoline and may be coated with polyester resins. A one-to-one mix for easy handling. One pound of Part A and One pound part B, mixed well, will produce approximately one cubic foot of expanded foam. Item: FL4015G5LBF
Spec Data http://www.fiberlay.com/upload/techd-401G-401_TDS.pdf
Fiberlay Polyurathane Pour Foam is Coast Guard Approved. The Pour in place foam provides excellent flotation and strength under floors and is not affected by oil or gasoline and may be coated with polyester resins. A one-to-one mix for easy handling.
Preparation: Area to be foamed must be dry. Be sure to have an escape for foam, we suggest a minimum of 1.5" - 2" hole. The foam will continue to expand and can cause damage if it does not have a place to escape. Calculate amount of foam needed using the chart below. NOTE: This liquid has an extremely short work time - USUALLY LESS THAN 1 MINUTE! Have everything ready ahead of time.
Measuring and Mixing: Using plastic buckets, measure equal parts of "A" (activator) and "B" (base). Pour each one into a paper mixing bucket. Stir briskly for 30 seconds. Liquid will begin to turn into foam immediately. Squeeze paper bucket to form a funnel and pour liquid into area to be filled. Try not to overfill. Mixture will continue to "foam" and expand for a few minutes. Let stand for 30 minutes. More foam can be added and will bond to itself if enough foam was not mixed the first time.
DO NOT REUSE PAPER BUCKETS!! THE FOAM WILL NOT WORK!!
DO NOT GET LIQUID FOAM ON GELCOAT, IT WILL LEAVE A STAIN! If foam gets on existing gelcoat, the only way to remove it is to sand with wet / dry sandpaper (220-400 grit).