Do the black stains and streaks on my roof mean it’s time to replace it?
Posted on May 24, 2021
Estimated Reading Time : < 1 Min.
No, but there are other things that you should know about them. The growth of brown or black algae will not hurt your shingle’s performance; however, they don’t look very nice either! You can treat the algae with a bleach solution mixed with TSP (Trisodium Phosphate).