Q. I would like to find an alternate crown molding for exterior use. I can't get my local suppliers to advise me if primed MDF crown can be used outside. I have thrown scraps of this product in the trash pile, where it was rained on for a month, and was amazed that it was unaffected. However, I don't want to install it outside, only to find out that it's the sun or something else that destroys it.
