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here you find videos on various roofing topics

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    Modified Bitumens

    Description:   These roofing systems are typically a single sheet, reinforced in the middle with either a polyester or fiberglass mat for strength and modified with rubberized asphalt.  This allows the roof to expand and contract with building movement.  The Modified sheet should be installed over a mechanically fastened base-sheet.  These systems are mopped in…