2 Lb Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (Quart Kit)

Great stuff.

Well worth the cost

I have used this product for several projects over the years, from filling a hole left in a basement wall where the conduit from a service entrance that was moved came thru (it takes several as it has to fill the void in the block from the bottom of the wall up past the hole), to filling false 6x6 posts at the end of my driveway.

I thought I was getting bottles much larger than the ones I recieved, which would make the price seem fair, but it's definitely not worth the price for this small of bottles. The foam itself is great though, the cells are super dense, it cures quickly, and shaping/sanding is pretty easy and doesn't leave gunk on anything.

I teach Sunday School and do quick science experiments to keep them interested and wanting to come to class. Polymerization is an amazing thing. I mix the chemicals in a small plastic cup and it overflows the cup. After it dries, I pass it around. Kids like to take it home. I do wipe off the lids with paint thinner so they will re-open next time. the lids can seal shut.

This product was supposed to create over one cubic foot of foam, but it created less than 1/10 of a cubic foot of foam. After it failed, the seller notified me and successive emails of three extremely important, but undocumented conditions that must be met or they will disavow all responsibility for the failure of this product. When I pointed out that the documentation was insufficient, they put the blame on me because they said their product is for professionals only so they do not want your business unless you do this for a living. Don’t waste your money on this brand of foam. I recommend a different product.

This stuff failed miserably for my application. It expands very quickly if you have any thoughts of using a funnel of any kind just forget it! despite my failings with it the foam itself is very strong and dose what it says just work fast and forget funnels! i made a simple funnel out of a sheet of cardboard to try and pour it into a hard to reach spot and it just foamed up in the funnel blocking it almost instantly.

This liquid foam dries with in 30minutes and I can remove any extra that sticks up above the deck.