Fiberglass composite panels can be used to manufacture campers with various properties. I just recently bought a slightly used 7 x 14 cargo trailer that has nothing in it.We can supply and ship to Minnesota from our warehouse. I've used polyester resin before, which will seal it water tight. It might be a bit expensive depending on how much you are doing, but it is water proof. Alloy Brewing - Coon Rapids Epoxy Classes - MN. Close. Lake County Planning and Zoning issues Land Use Permits (LUP). A LUP is needed when you are placing any structure over 3' in height. No information is available for this page. With AEONâ„¢ Technology, Wilsonart HPL surfaces are 3X more resistant to wear, scratches, and scuffing, compared to other laminates.