Enerfoam 30oz Sealant - Fireblock Rated, Polyurethane Expanding Foam Sealant. Gaps and Cracks Filler. Water Resistant, Closed Cell, Spray Foam Insulation. Pack of 12. Applicator Gun Not Included

I did not have any problems with this product. I purchased 12 but returned 6 of them after contacting company - after initial use I realized 6 cans were more than enough.I did a bit of research and got the proper gun:https://www.amazon.com/gp/product/B01N44BB15I also got this gun cleaner:https://www.amazon.com/gp/product/B0002YWRG4If you are looking for a product that actually SPRAYS OUT - this is NOT it.I got this because the faux rock panels I had recommended this product for sealing during install along with screws. I also used it to seal some cracks/gaps. It does not "over expand" like others and I was very pleased with the performance of it.I have no complaints. Be careful not to get it on your clothes or skin - it will NOT come off unless you use the above mentioned cleaner and I doubt that's great to get on your skin over and over.

it works very well on our icf block build!!! locks the blocks in place

Foam is generally very good for adhering landscape blocks in none structural applications. Think decorative landscape borders where backfill isn't required. We prefer using foam adhesive for these applications because it's bond is strong enough to keep the blocks in place through general bumps but the blocks can be separated for repair if needed.Foam application is much faster than pl calk type adhesive which speeds up construction time. Just be sure to follow all instructions and keep your gun clean.