How do I remove dark streaks on my roof?

Question

5 yrs ago we replaced our roof. We now are beginning to get dark streaks in various areas of our roof. What causes this and how do we go about removing it or do we have to hire someone to remove it? What is the procedure and is it expensive?

Ann|The Apple Street Cottage · Answer

It doesn't harm your roof, but it sounds like it's an algae called Gloeocapsa Magma.

Vimarhonor · Answer

Hello! We are trying this product for the first time that we saw on Todays Homeowner—on our house siding called wet and forget - outdoor and that the product works on mold and mildew problems - seems to be pretty effective you may want look into it and see if it’s a product you may want to consider.

We purchased the hose end formulation to spray our two story home without a ladder and it covers 2000sf for about $37.00.

Please look over link, reviews and Q&A to see if it’s a product of fits your needs as well as review the appropriate product size you need to purchase. Heres a link to get you started.

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