The deck is 16' x32' made of 3/4" - 4' x 8' sheets and is 8' off the ground. Currently it is covered with fiberglass but there are one or two areas that have cracked. We want to correct any moisture problems before they become serious.
We had covered it with a commercial vinyl product 12' wide with overlapping seams but the seams gave way and water seeped in.
Any suggestions on how to waterproof this deck would be very much appreciated.