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You likely have an algae problem (and pressure washing is not the solution). If you've started noticing black streaks spreading across your rooftop, you're not alone. After a spell of wet, humid ...

This as-told-to essay is based on a conversation with Spencer Claeys, owner of Northwest Pro Wash. It has been edited for length and clarity. I can tell you that cleaning roofs and gutters is one of ...

Add Yahoo as a preferred source to see more of our stories on Google. You've got a metal roof—so, do you really have to clear off those leaves each fall? Metal roofs are known for their strength and ...