Moss on roof | Ask The Experts Forum | Metal Roofing Alliance

Guest User 11/25/2015	We have an aluminum metal interlocking roof. The manufacturer states moss cannot grow on this type of roofing material. But since we live in the rainy northwest we have moss growth on the areas of the roof that get the least amount of sun. We had it cleaned with a brush and water last year and most of the moss was removed. We have regrowth this year. Is it ok to put a treatment like zinc sulfate on the roof to kill the moss? My concern is it will stain the roof.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/20855/find/
Todd Miller Isaiah Industries, Inc. 11/25/2015	I would probably look at products like Wet and Forget or RoofWash. These will clean it and act a bit as an inhibitor. I would not use zinc or aluminum,	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/20856/find/

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