GD Black foam sealent - Found source Boring Smith

[powerscol]

Is there a reason not to use "Great Stuff" when sealing up an opening? Other than color?

Jim

Greast stuff is an open cell foam and breaks down and get brittle very quickly (not UV friendly) in an open environment. I have not used the pond stuff but perhaps is it different

[minnow101]

The Pond & Stone is closed cell. So it’ll work.

[jkwilson]

Following up on this to give more information.

The product mentioned is good. You do have to buy a gun for the can it comes in and you will also need a can of gun cleaner.

The foam is about $9, but shipping is crazy and I ended up spending $22 for one can. I bought a cheap gun on eBay for about $11 and a can of cleaner on Amazon for about $7. Basically ended up spending $40 to seal the two 12” gaps where my trailer hitch goes through the coroplast. But everything seems to be reusable, so we’ll see.



A couple of notes. The foam comes out of the gun fast. It’s a wonder half of Indiana isn’t covered in this stuff. Gloves and old clothes are a must. Have rags handy.

Works great.

[jkwilson]

Updating with a current link https://boringsmith.com/p/convenienc...t-p8hhjq69b94a

[rootusrootus]

Greast stuff is an open cell foam and breaks down and get brittle very quickly (not UV friendly) in an open environment. I have not used the pond stuff but perhaps is it different

Great Stuff is closed cell, FWIW.

I know this is an old post, but since the thread just got necro'd, it's fair game.

[powerscol]

Great Stuff is closed cell, FWIW.

I know this is an old post, but since the thread just got necro'd, it's fair game.

I beg to differ, but it depends on which Great stuff you get, The typical stuff found at HD (yellowish color) is Open Cell and breaks down fast. They do make a closed cell, but you need to look carefully.

The Boring-Smith is the correct original product used by GD. It also appears they use a new type now ( less foamy) on some of the new trailers.
Safe travels

[rootusrootus]

I beg to differ, but it depends on which Great stuff you get, The typical stuff found at HD (yellowish color) is Open Cell and breaks down fast. They do make a closed cell, but you need to look carefully.

Great Stuff claims otherwise. Latex foams are open cell, Great Stuff is not latex, they specifically address this question here: https://www.greatstuff.dupont.com/faq.html

I agree it's not particularly durable, in any case, especially exposed to UV.