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You should not clean roof shingles if the roof has damage like missing shingles or low spots where water may accumulate. You should focus on repairing the roof before any cleaning process occurs. If you notice roof damage as you’re climbing on the roof to clean it, stop immediately. Call a roofing pro to make repairs. Cleaning a roof that has damage could lead to pooling water or water damage to the roof decking. The roof cleaning process removes mold and mildew, making the roof look better. It is not going to fix physical damage, though.

Roof cleaning is typically necessary annually, although homes in moist or heavily polluted areas may require more frequent service to prevent buildup.

You may become so frustrated with the look of moss on your roof that you contemplate whether to clean or replace your roof. Fortunately, you don’t have to go as far as replacing it. After cleaning the moss, you can use a chemical solution to keep it away. For further protection, trim branches that overhang the roof, as fallen seed pods and leaves on the roof allow moisture to collect, encouraging moss growth. Consider adding zinc-coated flashing to the roof, too. As rain washes across the zinc, it leaves zinc particles behind that inhibit moss growth.

It can be dangerous to remove icicles from your roof, so the best option is to treat the underlying issue instead, usually by ensuring proper insulation in your home. If you’re concerned about immediate damage, you can hire a professional to remove the icicles and the snow accumulation on your home to prevent the issue from recurring. Just make sure you use a long-term solution, too, like addressing insulation problems or installing roof heating coils on your roof.