Foam Joints - Caulk, Putty, or Other?

[Hellvin]

Does anyone have good or bad experience with particular products for filling in joints, seams, blemishes, etc. in their foam projects?

It seems to me that the most likely candidates would be a sealant such as laytex caulking, common wood putty or even drywall compound. I would expect that the laytex is more accommodating in terms of flexibilty, moisture changes, etc.

Putties and compounds, I would expect, would eventually dry out too much and crack but some people seem to use them.

[jdubbya]

I'm interested as well. I'm making a couple of foam cemetery monuments and need to clean up the joints. I've read of several folks who use joint compound, but I'm also open to suggestions.

[wudden]

I posted a very similar question recently, and joint compound and painters caulk seemed to be the best responses. I went with caulk for my seams and after paint, it looks fantastic.

[turtle2778]

i used wood putty for my seams on my columns. Great idea until it rained. I needed to seal these if i wanted to work with putty. :( Joint compound is lighter and works well too.

[dynoflyer]

I like to use carpenter's wood putty/filler in joints and big dings. It dries harder than joint compound. Joint compound is a good second step to smooth out large areas and sanding marks but is soft and soaks up water like a sponge. Which ever one you choose, each of these will need a couple coats of latex paint.

Don't forget to paint the bottoms if they'll come in contact with wet grass in your yard haunt.