Thread: The Best Styrofoam Adhesive???

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Hello, I'm sure this has been asked a million, however I searched and not really finding much. So what's the best type of permanent (all weather) adhesive for the white type of styrofoam? I'm wanting to make a permanent bond between two pieces of styrofoam that will be out in the elements & wouldn't want it to fall apart (tombstone).
If this question has been answered before, please forgive me and just point me in the right direction (i.e. link). Thanks!!

gorilla glue....it will outlast the foam!!!!
Gorilla Glue - Home

I use a glue callled PL500 (maybe its 300) you can find by the liquidnails at the hardware store, but i only use it on pink foam board so i don't know if you will have the same results?

Liquid nail has worked the best for the white foam board. I used it on all my tombstones and cemetery pillars. It has been very durable.

I use liquid nails adhesive - I think this is the right one...
LIQUID NAILS 24 Pack 10 oz. Heavy Duty Construction Adhesive - LN-903 at The Home Depot

If that's not the exact one, it's similar. I get that brand or the house brand that is safe for foamcore - they should say on the label if they are safe for foam. I like that it's in a caulk gun tube.

Gorilla glue is great as well, but it has to be clamped/weighted down and is more expensive so I don't use it for big stuff.

Cool, I'll give Liquid Nails a shot. I'm pretty sure that I've got a couple tubes of the Liquid Nails Construction here at home already, which makes me happy that I don't have to make a special trip just to go out & get sum'n I don't have!!

Anyhow thanks for all the replies, I do appreciate the help!!
-shs-

I use Loctite, heavy construction, interior/ exterior for the pink foamular. And I use Elmer's wood putty to hide seams when 2 pieces are glued together.
i use gorilla glue to glue on cherubs

I have never had much luck with any adhesives. What works today doesnt work tomorrow. What I did try recently on a single tombstone was putting a heavy coat of paint on 2 pieces of styrofoam and clamping them together. So far it was worked great.

liquid nails works, but keep it away from the exposed edges, as it WILL melt the foam somewhat.

ok- jumping in on this one-

Gotta trust me here. Gorilla Glue is BY FAR the best for foam. I've tried them all- Liquid Nails- on white beaded foam melts it and leaves a groove where the foam touched the glue- and if you use enough, it'll melt all the way through the foam and ruin your prop! Ask me how I know that!!! It's great for gluing wood together- does ok with the pink/blue foam- but it's tough to sand/paint, and once dry, will and does crack and crumble away along the seems.

Just tried the PL300 on my new columns. That stuff SUCKS. Once it's dried, it pulls apart VERY easily, cracks, crumbles, etc. I had to go back and re-glue it all with Gorilla Glue. 1-2 hrs with Gorilla Glue, and it's rock solid. It's not coming apart. I just wish I didn't use 6 tubes of that stuff- could've bought a TON of Gorilla Glue for the same price!

Great stuff- works ok, but still not nearly as good as Gorilla Glue. Trust me, it's 100x better than anything else out there for foam. After my column project, I'll never use anything else. I bought the largest size I could. This stuff ROCKS.

Make sure you read the directions on it tho. You have to wet one or both sides of your project with a spray of water (just get it damp), then a VERY THIN layer of glue. It doesn't take much! This stuff turns into foam and expands as it dries! Try it once, you'll be a believer.