exterior brick stain under alum. siding


Old 06-21-15, 11:39 AM
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exterior brick stain under alum. siding

Hi we moved into this 35-year old house recently. We found out thee are streams of exterior brick stains under alum. siding. Please see attached picture. Please advise possible causes and fix?
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Old 06-21-15, 12:17 PM
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your pics didn't post http://www.doityourself.com/forum/el...your-post.html

Most likely the aluminum siding finish [or old siding under it] has deteriorated and rain water has washed the residue onto the brick. Try scrubbing it with TSP and then rinse.

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