Artis Cummings

Do you have green or dark stains or streaks on the shingles of your roof? These stains are likely caused by algae, moss or l ... ichens. While algae might look bad, it doesn't typically cause damage to shingles; however, moss and lichens can penetrate shingles and potentially cause structural damage.

How is Roof Shampoo® Different from Common Roof Cleaning Methods?

Common roof cleaning methods like chlorine bleach, the... Show more