Gorilla Heavy Duty Expanding Foam 353ml - Multi-Purpose, Durable & Seals out Air, Moisture & Pests | No Shrinkage & Maximum Seal | For Indoor & Outdoor* Use

Very effective and does an amazing job

Very good although a tad messy- I’d advise using a pallet knife for a tidy finish.

I had a accident with van and as it was my fault I was looking for a quick fix , this stuff is great it filled hole and has been solid ever since it does need sanded to look apathetic but it ha stone the job

Great product!

Very efficient

If you don't use it all in 1 go, you can't use it again, [1 use only] which is ashame as we had quite a lot left in the can. Saying that, the gorilla foam is excellent sets within 24hrs & is as hard as concrete. Its easy to sand smooth but, I would advise a face mask so you don't inhale the dust.

This project was very difficult to use, although most of them are, but it was extremely sticky and it also filled to a very large amount which ended making it come out of cracks and ways not intended. The colour also did not remain grey as it was supposed to over a couple of weeks in normal outdoor conditions, it changed from grey to yellow.

Loath though I am to use products like this, there are times when nothing else will really work. I used this in cold, slightly wet conditions to block a hole in a wastewater drain from an old wastewater pipe, where the waste water was backing up into my walls. Despite the grubbiness of the hole and the cold and wet conditions, it worked like a dream, and I was able to cut off the excess after only a couple of hours. I've tested the seal by flooding the drain, and it's no longer backing up, so worth every penny! Recommended.