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How long does it take for water to stop dripping at the faucet after the main shutoff valve is applied?
Jan 16, 2017
Hello Bin, If you have not done so already, it helps to drain the system at the lowest point.  Meaning apply the shut off valve first, open the faucet at the lowest point (usually in the basement or ... 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?
Oct 13, 2014
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
Last edited Oct 13, 2014 3:27pm

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