From All County Exteriors

If your house is located in a humid area of the country, you’ve probably seen unsightly dark streaks on asphalt shingle roofs. These are not just regular dirt, these are an accumulation of dirt, defective shingles, mold, or mildew, and algae. More than being an eyesore, a dirty roof can also lead to its corrosion—earlier than it is meant to be. Cleaning asphalt shingles is an important part of protecting your roof. Maintaining it and making sure it’s always on tip top condition is one way of ensuring that it will last longer and keep it from deteriorating.

If your roof slope isn’t too steep and you’re comfortable working on it, homeowners can even do it themselves, but with the right precaution and ample knowledge, of course. Here are some tips on how you can clean your Asphalt Shingle Roof:

SOURCE: https://allcountyexteriors.com/how-to-clean-an-asphalt-shingle-roof-infographic/