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)

Used these in my science classroom to make "Foam Gnomes." The reaction wasn't as fast as the chemicals from the Science supply catalogs, but it works and was much cheaper.

Perfect for my Jetski build

Magnificent. I had a sewer vent inside of a wall cavity that was leaking sewer gas inside the concrete slab. Faced with $5000 of work, I instead mixed a cup of each of these and poured it into the cavity. The closed-cell foam blocks sewer gas better than concrete. It worked beautifully!The next day, I decided to fix my tippy mailbox. Instead of mixing a bunch of concrete, I poured in a half-cup of this. Job done.The only thing unclear is that you have to add B to A, not the other way around. (Or maybe it is the other way around. Read the instructions.)The only thing that's annoying is that A and B have different densities so I have to mix it by volume, not weight. I'm probably too careful with that.

It was good stuff and it works fast! I almost didn’t have time to put it where I wanted it before it started to expand. It does get a little hot on the fingers so wear protection. But it was super easy to use just mix the two together and be fast!!

Bought this because our truck camper has a habit of moving around in the bed of my truck.When we got to Florida Keys we centered the camper and filled trash bags with this stuff. It worked great. 1500 miles later and the camper hasn't moved.The only thing I would have done different was I would use heavier trash bags next time.

This product was easy to mix and has done a great job keeping me and my family safely fishing on our homemade outriggers

This product was amazing!!!! This was not what This product was made for but using this for my halloween project is great. Can be messy if not used properly but with the instructional video and how to use guide, it makes it easy for anyone to use.Great, great, great product highly recommended.

Great stuff.