Dear Tim: I was inspecting my asphalt shingle roof the other day. At the top of the roof where the peak is, I noticed some defects. My shingles are only six years old so I was shocked to see ...
Many roofs in my neighborhood, mine included, are covered with black streaks. What’s causing this to happen, and can the roofs be cleaned? I’m able to walk on my asphalt shingle roof with ease but am ...
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