Yes its a weak foam compared to your structural foam cores for hulls and things but you can find many uses for it in other places on boats besides a hull. Posted by 3 days ago. Basically I got 3 for the price of 1, all premium paint. Typical waterborne paints are acrylic or vinyl lattices used for painting building interiors and exteriors or water-soluble industrial paints. I haven't tried glassing over painted XPS or EPS foam. This is my first project using these materials so I have a lot to learn. Go to Home Depot (any bix box store) and check the paint department for discards or returns. 1. Put your gesso or latex paint into a paint tray. For me personally, one of my least favorite things to do is base coat or paint multiple large surfaces by hand. I know urethane resin works, but I don't have any on hand. Step 2 - Choose Supplies and Prep. The sanding of the foam insulation is only essential when doing craft work or decors. You can paint polystyrene foam or expanded polystyrene beads using a waterborne paint to protect it from solvent attack by subsequent coats of paint. Painting XPS rigid foam board (Kingspan GreenGuard) [there doesn’t appear to be a way to post j text in this forum but basically I j want to know how I can paint XPS] Close. Hi : Being new doesn't mean I can't be helpful . Hoping to hear from those with experience carving XPS foam forms/dioramas intended to withstand the elements, or even better, forms/dioramas specifically designed to support a working water feature. The foam needs to be sealed so it can withstand a … Is it advisable to coat it with a latex paint or housewrap? Hi all, I've watched a few of BMC's videos on creating terrain with XPS foam. Now , that said I get my products at Hobby Lobby cause it's closest and the products they sell can be used on model railroads. I need to know of an easy way to seal polystyrene, or insulation foam. I have used paint that is for plastics (rattle can from hardware store) and it didn't melt the foam, but I only used it to get my outline. I put on a house addition with XPS on the exterior. I have painted over finished boards using the same plastics paint many times. Any easier ways? XPS can be a very useful material - it shouldnt be given such dismissal so easily as the forum members here like to do. Spray coating / painting XPS foam. He mentions that one of his least favorite things to do is draw brick lines. I have heard that acrylic paint can seal it, but I just wanna double check. Then the paint roller should be coated evenly with the paint. I was able to pick up 3 different colors, chocolate brown (satan) for the fascia, tan (flat) for the pink foam and light blue (flat) for backdrops, all for $9 each. There are multiple types of foam, but they all have a similar weakness with a similar solution. Watched your shaping video, and I have a couple of comments. 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