If recall my Alpha roof recommended using Spic n Span to clean it. Personaly I use Simple Green concentrate mixed a bit strong in a gallon sprayer, saturate the roof, wait 15-20 minutes, then scrub with a medium bristle brush & Dawn soap or good quality car wash soap, & rinse. So far has worked very well.
I use the same method to clean the awnings only once saturated I roll them up for the few minutes.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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