Fiberglass Supply Depot 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)

Product works great. It takes some trial and error to judge the right amount to mix because it really expands. It’s easy to cut away any excess

It arrived broken, but they replaced it. I give it 5 stars because the product is super good for my boat; it's excellent. Thank you.

Excellent

Works great , quick set up and easy to use

Just follow the instructions and the product will do its job. It gives you just enough time to mix and pour to finish your project and sets up solid enough to stand on within 10 minutes. Can easily withstand the weight of a person bouncing up and down on it. Just wish that it would expand a little bit more, having to buy a few more jugs to finish my boat project. Definitely gets pricy.

Order more then yup think you need

Being a more dense foam I was hoping for more expansion but it did the job. I used this to repair my pool steps from where improper install caused the dirt to wash out underneath them. This filled the void well.

Would NOT buy this again ! The expansion rate is a joke for this kit. You are better of buying True Composites 1/2 gallon kit, it expanded more for the 1/2 the price of this kit. Buyer beware.

Awesome stuff, I used it to fill holes used from animals going under my cement driveway and walkway. Fantastic results and hardens like a rock

Petrol breaks this product down and absorbs petrol

It worked perfectly to replace floatation foam in a boat

Works great but you have to be fast!

Very good product, came leaking tho, but was refunded.