I just finished making a theater prop (bathtub for Seussical the Musical) out of 2" pink installation foam (might be called foamular). I've already painted it and realized I need to make it stronger - dingproof. Any ideas?
If it's being used, actors crawling in and out of it, I Second the use of Rhino Lining, or even springing for a real live, fiberglass solution. Perhaps a mix of VSSD, might, in the right formulation work, but it's not usually great for tread-able scenery.