What We Consider For Commercial Roof Repair
We look at roof type, age, access, tenant spaces, documentation needs, drainage, prior repairs, and what must be monitored after the visit.
Flat and low-slope roofs on older Frederick commercial buildings commonly use modified bitumen or built-up roofing systems with gravel ballast. These systems fail at lap seams, at penetrations for HVAC equipment, at parapet flashings, and where drain scuppers have become blocked or corroded. EPDM membranes are common on commercial additions from the 1990s and 2000s and fail at seams and around penetrations when the adhesive ages. TPO systems are newer and more durable but can delaminate at seams if not properly heat-welded.