I have a small rotting spot at the bottom of my back door and it's almost to the point where I could put my finger through it. I don't have the cash to replace the door right now, but what would you suggest I patch it with before painting it? I have seen interior/exterior wood filler by Elmer's and others. Someone suggested Bondo like the kind used in auto body shops. Any prep steps you suggest as well?

2 Answers 2


Dig out any rotted wood that you can get to. Soak the wood with wood hardener around the patch area to stabilize the rotted/deteriorated wood that you couldn't get to. Fill with bondo or wood filler in 1/4" layers until slightly bulging from the patch area. Chisel/file/sand down when the final layer is almost completely dry with a sanding block. Prime and paint. The patch should outlast the rest of your door!

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If the spot is really bad, you can cut it out with a saw, and replace with doweled and glued good wood. Since you're painting, a carefully done job of this shouldn't even be visible.

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