I would not purchase Leaf Filter system again. In 3 years it has done a good job of keeping debris out of the gutters, but the black stripes that form on the front of the gutter between every 4' sect ... read more
black spots on the roof. can you tell me what is the cause of this? have lived in this house 12 years and have had no problems. what can you do to clean this?
Using the information you have provided and not visually inspecting the roof, the black spots on your roof are more than likely algae. Most shingle manufacturers use copper or zinc coated granules t ... read more