GAI, LLC

Hello John, I agree with Ryan's answer.  I would add that you can also pull the gutter spikes and replace them with gutter screws available at any of the big box stores.  They typically come with the ... read more

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