Akfix 840 Fire Block Spray Foam (1x12 Oz.)- Orange Color Fire Retardant Polyurethane Expanding Foam for Gap Filling, Insulation and Sealing on Window and Door, Fire Rated, Paintable | 12 Oz. 1 Pack

Minimal honeycombs. Bridged wide gaps and filled large holes. Does the job. Price very good. Don’t hesitate to buy. Does the job well. Impressed!

I have tried several products as a gap filler... by far, this is the best product that I have used!! Expands like up to 3 inches, dries pretty fast, and easy to cut.

Needed this for underneath our motorhome to sell some areas that wore away. Holding the Can upside down is a challenge and they are for the spray drips all over. I would recommend not using it if you have to lay on the ground. But should be fine standing up

the even include gives to keep the material off you hands

Make sure you use the gloves provided! Only flaw is the instructions are printed to small and hard to read. Common sense needed.

This product does not expand to fill openings or gaps. The volume immediately after application and the volume once cured remains virtually the same. Cures very slowly.

Product did not seem to be the same quality as comparable products purchased in Big Box stores. Thinner and a little more difficult to use in my application.

Amazing! Every can worked! It doesn't expand too much at all, which is exactly what I needed. It dries hard and sticks to everything - so be careful not to get it on you.Amazing deal, actually, as regular foam at the hardware store costs between 6 and ten dollars a can, and if you want black foam, like for fountains, etc, you are going to pay over $20 a can!Now, I am familiar with foam in cans. I know how to keep the foam from dripping, during application. It's a skill. The foam has to make contact with the receiving surface and if you are fighting gravity, you have to layer small beads. This is true for just about any foam spray.This was amazing and perfect and I'm in love!