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)

Why did you pick this product vs others?:Great product. Just remember when you use it LESS IS MORE. if not you will have a lot of waist.

I used it on a lifeguard float I use to display a dive flag that I had cracked and wanted to salvage. I did the math on volume of the interior in like 5 seconds and was off on my mix a little on the too much side. Was quite enjoyable when the reaction happened as it was quite explosive. I had just poured one part in then the other and shook the entire float. This is contrary entirely to the instructions mind you, but it apparently works well enough and maybe a minute later the float was launching foam from the cracks and the plug hole. 10/10 entertainment value alone.

0.5 ounces and this is expansion rate. Wonderful stuff

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 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.

Does not work where there is any water

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.

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.