I am finishing a remodel and the deck has sat unfinsihed for 1 year +. It is 3/4" plywood CDX covered with a rubber coating and aggragate. I am going to put a urethane finish on it but notice that the underside of the deck must have seen some moisture as there are some water marks. Is this a serious problem or once it is sealed is there something I can do to stop any further deterioration.
- posted
20 years ago