Quote Originally Posted by daytonagary View Post
I always get my fiberglass work all done then spray a nice coat of gel coat over everything before spraying any type of primer, etc. This seals the fiberglass up perfectly. I get white brushable gel coat from our auto body supply house which also does a lot of sales to boat repair businesses. I thin it with acetone and you can then spray it to whatever thickness you want.
That's a good tip... I'll remember that one and try it out sometime..