I had an exterior fiberglass door installed and stained. The contractor said it was sealed but has since dulled out and is dry and brittle. I want to refinish it but the can’t color match it. So I bought a new gel stain but don’t know how to remove the

Galvanized roof starting to rust. What kind of paint should I use to repair it? Aprox 17 years old.

My bathroom cabinets are painted white. I would like to give them a stained look without stripping the paint. Is this possible, and if so how?

Air bubbles in compound?