Q: Is it a good idea to pressure-wash wood siding before painting? It seems like this would drive a lot of water into and behind the siding — water that might still be present when the paint is applied. And what about pressure-washing decks?
Q: I build deck railings, awning frames, and other structures out of welded, galvanized steel tubing. I can’t get paint to stick for very long. So far I have only tried Rustoleum after using a mild acid rinse. It lasted about two years before the paint started to peel. Is there a product or technique that will last longer?