Algae and Moss Making Your Slate Roof Look UGLY?

July 26, 2020

Black Slate is a common type of slate used on roofs in Pennsylvania.  This type of slate is native to Pennsylvania.  When used for roofing purposes, this type of slate roofing can have a life of 150 to 200 years.  Maintaining your slate roof’s natural beauty is an important step in increasing the life of…

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