Thank you, we used the CPES that you recommended and it worked great! This has definitely been a massive job but we are nearing the end thankfully! The fiberglass is almost complete and then we need to install the flooring and carpet. We purchased the marine grade plywood but because it is untreated would you recommend using the CPES on it as well to seal it before the glue and carpet? We have read mixed reviews about sealing the plywood but it seems most do recommend it, but my concern is what would work best to seal it and not interfere with the glue and carpet? Any advice would be much appreciated. Thank you