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Signs your commercial roof may need to be replaced

· Granule accumulation around drains and low-lying areas: On a roof with a granulated cap sheet surface, the granules are used to provide durability, UV protection, and traction to the roof surface. As the roof ages, those granules start to become dislodged and will eventually expose the underlying asphalt layer. Once this process starts it expands exponentially and compromises the waterproofing integrity of the roof.