Join Date: Mar 2008
Location: Rochester, Medway, Kent.
I think the pink and blue foam are pretty much the same stuff, just a different colour, they're both extruded polystyrene foam, one may be slightly denser than the other?
White foam is expanded polystyrene, its the same stuff they make packaging out of, its not bad for building scenery but its not as tough and durable as the extruded variety but is more easily available.
Keep in mind that with all of these materials solvents in spray paint and some glues will melt them, depending on what you're doing this can be a good or a bad thing, you can use PVA glue to protect surfaces or you can use other materials. I use a mix of PVA and filler to paint over stuff, it sets rock hard,seals and textures the surface and is cheap as hell too!