Pennsylvania Slate Roof

Slate is a fine grained foliated homogeneous metamorphic rock derived from an original shale type sedimentary rock composed of clay or volcanic ash through low grade regional metamorphism it is the finest grained foliated metamorphic rock.

Pennsylvania slate roof.

60 to 90 years. Slate from different mines has different average slate roof life expectancies with proper installation and regular maintenance. Penn big bed slate or pbbs mines the highest quality pennsylvania clear and ribbon slate from our own quarries and fabricates that slate into a vast array of products from slate roofing shingles to architectural products and even into turkey calls used by hunters to lure their prey. 100 to 200 years.

Foliation may not correspond to the original sedimentary layering but instead is in planes perpendicular to the direction of metamorphic compression. Other factors in roof longevity. Pennsylvania or ribbon slates. We excel in providing our valued customers professional slate roofing that will last longer and look better than any other roofing material in pennsylvania and new jersey.

Today slate is still in high demand especially in the u s where discriminating buyers and designers specify it for commercial and residential alike. Vermont and new york slates. There are buildings in our area roofed in our local slate which have lasted over 150 years so far all from the pennsylvania big beds that we are named after. In 1850 at the crystal palace exposition in england it was deemed the best roofing slate in the world.

Slate is the material of choice on roofs with architects for it s unsurpassed beauty fire proofing and longevity. Many of these buyers seek pennsylvania slate for its beauty and resilience and pbbs is the leading supplier of pennsylvania slate to customers across the nation. 125 to 175 years. 175 years or more.

Pennsylvania slate roofing the production of roofing slate in pennsylvania dates back to 1734 when welsh settlers discovered the peach bottom slate deposit in york county pa. Slate production increased dramatically in the years following the civil war as quarries were opened in vermont new york virginia and lehigh and northampton counties pennsylvania. By 1876 roofing slate imports had all but dried up and the united states became a net exporter of the commodity.