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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
What are the top 3 energy efficiency upgrades I can do to my 2-story home?
Aug 13, 2014
The energy efficiency of a home relies on several factors.  The most dominant of these factors is the insulation used, both within the perimeter walls and attic.  This would include the houses ability ... read more

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