Originally Posted by captsteve2002
Another reason not to use pressure treated lumber when glassing over it is that polyester reasin don't stay attached to it over a long period of time. It will delaminate with age.
Second that! the treatment process leaves a residue that prevents the wood from absorbing moisture, and also pretty much any other glue or resin.
One other note. A lot of folks are going to epoxies verses polyester resin based composites. Epoxy will ad-hear very well to polyester, but not vise versa. So, if you use an epoxy as sealer or a filler base, you must also use an epoxy for your laminations over it. West Systems have some awesome products for patching and filling that are epoxy based. They also have fantastic technical support to go with it!