Gary68 said:
...
the walls are not flat so had to goop it on and the 5200 is on the thin side and wants to run,we will see if the next pics are of wood on the wall or me and a razorblade trying to get the runs off my windows
Hi Gary, it might be a bit late for this comment, but I'll try anyway. I discovered something the hard way during my build-out regarding adhesives, fiberglass, and plywood.
In short, when I was attaching new wood to the exterior fiberglass from the inside, I just drew X's or S's is all over the new wood with the caulking-type adhesive (PL Premium), and then pressed the new wood tightly to the fiberglass using my own hillbilly method. So far, so good.
The problem comes in when the adhesive dries and it's not attached to all parts of the fiberglass. In other words, there are areas of the fiberglass that have adhesive on them and are stuck to the new wood, and other areas of the fiberglass that have no adhesive and are not stuck to the wood. It's not coming off, but from the outside, the fiberglass is a little bit wavy where the repairs took place because it's not completely stuck to the plywood in all places.
That's a long intro to just say this: If I had to do it all over again, I would choose a different adhesive, one that can be troweled on to the plywood. That way, every place that the fiberglass touches the plywood there would be adhesive between them, and so, no wavy areas in the fiberglass.
FWIW,
Tom