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Answers from contractors near Bala Cynwyd, PA

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?
Over a period of time, shingles may develop dark brown or black streaks that are sometimes mistaken for soot, dirt, moss or tree droppings.  In actuality, this discoloration may be caused by algae gro ... read more
is it standard to hold a cooling unit up by a belt to prevent it from leaning? this belt slipped and was tighten to again to prevent it from leaking
Sep 9, 2014
A belt doesn't sound like the proper material to hold anything related to air conditioning

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