How to waterproof styrofoam and how to waterproof polystyrene for outside use

[@georgeclinton3657]

"Hello. Right." It's the introduction we need, not the introduction we deserve.

[@thresagraham8181]

I going to try this for the stray cats that come into my garden in the winter, thank you. 👍🌻

[@renataostertag6051]

Thanks for caring for the poor cats. We do too.

[@fla01003]

What is the brand of waterproof pva? Thank you.

[@sherwincolina6570]

Any kind of sand will work?

[@signletters]

Any sand will work but it must be dry. Damp sand will not work.

[@loewiehaans4305]

If i put polystyrene board into an aquarium for aquarium scaping how long will it last without following your methods?

[@AVspectre]

I’ve longed for a reliable way to seal aquarium decor but there is nothing I trust so far not to leech chemicals into the water.

[@carvingfoam]

Polystyrene floats, not much use in an aquarium. Try making your aquarium decor with cement.

[@cglees]

@@carvingfoam 😂

[@shanabaybee1]

What if I've already painted it with acrylic paint? Can I still add the PVA?

[@carvingfoam]

Water proof PVA should work going onto acrylic paint. I have done it a number of times and it work fine.

[@DaLavenderhillMob]

Thank you.

[@zozoart]

styrofoam is already waterproof. It needs protection from uv

[@sixwacks]

I can't understand a word

[@LuisGutierrez-ks2uh]

You are not the only one

[@carol43ish]

😂