have a metal roof on shed an would like to clean the black algae......will phosphate free tsp work ok?
how do i clean a metal roof?
Apr 16, 2015
6 Replies
Carefully, wet metal is slippery.
I doubt it. A quart of bleach in a gallon of water should kill it; once dead, mayve broom it off?
dont walk on roof, use brush on a long pole, with detergent and minimal bleach since strong bleach can damage paint
That is literally overkill. A 10:1 ratio is all you need, and it won't burn your skin or pull color from your clothes if you spill it.
I've found bleach and water (half and half) worked on a friend's roof to kill the moss.
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A roofer friend of mine, a personal buddy reports he LOVES people who blech roofs.........
it causes damage and leads to early replacement
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