Ratings & Reviews for 3M Fire Block Foam 12-oz Straw Indoor Spray Foam Insulation Canister

Did the job

Did the job. The warnings were pretty severe as it’s pretty toxic until it dries. That was my only complaint

3M FireBlock

Used this product when we found a hole in our propane fireplace. Worked like a charm and sealed the holes well.

Great product, would buy it again

Great product to block airflow and risk of fire spreading. Performed as advertised, and plenty in the can to complete what I needed.

Worked good But Expensive

Way less expensive brands at Lowes. Just missed them when looking. Three time the cost as an equal brand at Lowes

works well, try to use it all once started, it's harder to use the second time.

3M Fire Block 12-oz Orange Sanded Paintable Polyur

Seals penetrations with no problem. The orange color is obvious but as with all foam if your not careful you can make a mess. I used it to seal corrugated metal roofing in a shed that I wanted minimize fire risk. I trimmed it when the foam was dry with a knife to give the appearance of a finished look.

Expansion foam

Worked better than other similar product in that the expansion was better controlled.

Fireplace foam

Good sealant. Haven't had a fire yet with it.

3M Fire Block

Messy

not bad

it works. But it loves to drip out and get in your beard. then you are stuck with having to trim it.

Fills cracks evenly

Was able to spray into an area that I could not see well. Was not sure that I Had managed to get all of the gaps but when I went outside to check, I found that it had indeed filled the cracks and expanded to the outside. I cut off the extra for aesthetics only.