Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-4 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-1/2 Gallon Kit

Easy mix and excellent product for adding a small amount of flotation. I use a lot of chemicals and the first thing I always do is read the associated safety warnings. The warnings on this product were not easy to read as I had to carefully peal back the label to read them. See photo. An easy fix would be to put them on the bottles horizontal instead of circular.

Works great

Great stuff, but watch out since the final volume is surprisingly large. Worked like a charm in place of concrete to stabilize an arbor in place for a grape vine.

not impressed. I will look elsewhere for this material in the future. End result is sticky and in consistent finaly product. I am a 20+ year special effects artist, creature designer, and toy maker. Chemicals like this are nothing new to me. So the results can't be blamed on operator error. Its simply a bad product, in my extensive professional opinion.

Very effective, good expansion. Disappointed at shrinking at the end of curing process

Product says 4lb but it expanded too much like if it was a 2lb foam, my mixing was good and the weather was at the recommended so I don’t think it was me.

Will fill the columns on speaker stands and prefer the higher density because of it. Applied urethane foam professionally for years; mostly two-pound industrially. My biggest concern is the isocyanate-darker-side of the mix. It would turn my skin black and only steel wool would finally get it off. That aside, temperature makes a huge difference; the hotter it is, the faster it kicks. Will comment after trying it on the cooler side. It will increase my working time; plus be four pounds, or more, when fully cured.After writing this review, I realized silicone elastomer would be best; especially if zinc powder was added. Eighty density to begin would be over a hundred. For any floation, 2 lb density is recommended. Used to spray it through a Gussemer pump that would heat each side of the solution to 130 degrees. The mix would take place at the gun. Foaming action was in the range of right now!

Liquid Urethane Rigid Pour Foam 4 Lb Density - 1/2Gallon Kit Total