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Power washing aluminum siding

3944 Views 7 Replies 4 Participants Last post by  Ron6519
I have an aluminum sided 2 story house. The north side has moss or some kind of green stuff grown in bloches. I plan on power washing it off as soon as the weather warms up. My question, is it ok to power wash siding and is there a right or wrong way. Also is there something I can apply so it doesn't come back.
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And when you spray the siding always do it with the sprayer pointing down so you don't force water up under the siding.
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