Peroxide and SH

A simple Google search says that hydrogen peroxide is a bleach neutralizer. I’m not really sure why anyone would want to neutralize their bleach before they use it. Chlorox even tells you to neutralize bleach with peroxide. hydrogen peroxide to neutralize bleach - Google Search . As a factory certified roofing & siding contractor that can give factory backed 50 year replacement warranties, I wouldn’t recommend using anything on asphalt shingle roofs other than what the manufacturer approves of. Water, bleach, and TSP is all that CertainTeed approves of. They don’t even list soap in their algae removal recipe, though I don’t really think they’d have a problem with soap. Alcohol or degreaser on the other hand. I wouldn’t do it. You don’t want to remove any oils and prematurely degrade the asphalt. A voided non pro rated 50 year replacement warranty if you discolor or damage the roof with non approved chemicals means your responsible for the full replacement cost if something goes wrong. Other than color problems the effects of something like alcohol or degreaser may not be noticed right away. I came to this forum for some education into siding and roof cleaning as I would like to expand into cleaning the very same products I install. I just stumbled upon this post and felt an urge to give my two cents. Not trying to bash anyone’s methods, just offering some constructive criticism by a factory certified professional.

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