Thread: What all causes shingle discoloration
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Old 09-01-2007, 09:27 AM
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Richard Rushing Richard Rushing is offline
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Re: What all causes shingle discoloration
Aaron referenced Haag Engineering... this is from that Haag publication, page 22. (see attachment).
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File Type: pdf Algae growth_Haag illustration.pdf (286.3 KB, 36 views)
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