I just got done re-painting my porch. In the process, I noticed that one of the wooden deck boards was rotten, so I pulled it off, and now I have to replace it. I happen to have some extra Trex boards from a previous project, so I was thinking of using one of those and painting it to match the rest of the porch. But apparently the manufacturer doesn't recommend this, and they say it'll void the warranty. (Older Trex boards can be painted, but this doesn't apply here.)
If I paint it anyway, what'll happen? I'd prefer to use the Trex board since I already have it, and there's a good chance it'll still last longer than wood. Is there anything I need to be aware of? Do these new Trex boards explode when exposed to paint, or something like that?