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House Wash PA
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Chester County Pressure Washer
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 What are those black streaks on my roof? 

Have you ever wondered what the black streaks on your roof are? They are called gloeocapsa magma which is a form of algae. The black streaks start off as small spots and then continue to grow and become a visual nuisance. Over time, they also create a moisture problem on your roof. Asphalt shingles are the most common type of shingles to have black streaks on them because algae love calcium carbonate which is in most asphalt shingles. The streaks are black because the gloeocapsa magma forms an ultraviolet protective outer layer which is why the roof becomes unsightly. The good news is the black streaks can be removed using low-pressure and biodegradable soaps, which I provide through my house-washing services. For more information about this topic, refer to previous posts on my blog.   

Can you clean a roof?

The good news is yes you can have your roof cleaned!  Contact House Wash Pa at 484-881-2713 for a free instant quote.  The recommended method to clean asphalt shingles is by using low pressure and special biodegradable soaps.  After the solution is applied at low pressure it then needs to be neutralized.  Neutralizing the cleaner is a very important step often over looked by many contractors. 

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