Hi: Devil Dog... The entire exterior surface is covered in fiberglass. The plywood sub floor is on the inside of the trailer and is sandwiched between the fiberglass shell and the linoleum. The drainage "Pontoons" are visable along the frame rails and help to cover the exposed frame from view. If you accidently left the water running in the trailer and the sink overflowed the drainage "Pontoons" would carry the water away from the perimiter of the trailer interior. AlfDevil Dog said:Hi, Would automotive under coat help the underside against rust and moisture.? And is the flooring made from wood and is it exposed or coated with something?
Thanks.