Modified Bitumen Roofing

Modified bitumen is a layered flat-roof system built from asphalt reinforced with rubber or plastic polymers, giving it flexibility and resistance to Chicago's freeze-thaw cycles. It's a common choice for low-slope commercial buildings and multi-unit residential roofs where durability and water resistance matter most. Property owners often turn to modified bitumen when replacing an aging flat roof or when a section of an existing membrane has reached the end of its service life.

How We Apply It

Our crew installs modified bitumen using torch-applied systems, which fuse each layer into a continuous, sealed surface. This method is well suited to flat roofs that need consistent, watertight seams across large areas.

Modified Bitumen Torch Systems — Torch-applied layers create long-lasting protection for flat roof surfaces.
Sheet Metal Flashing Fabrication — Custom flashing seals edges, valleys, and roof penetrations against water intrusion.
Fall Protection & Safety Systems — Certified harness systems keep the crew secure while working on flat and low-slope roofs.

Inspecting and Maintaining Modified Bitumen Roofs

Because moisture can travel beneath a membrane without visible signs on the surface, we use tools built to find problems before they spread.

Infrared Roof Moisture Scanning — Detects hidden moisture pockets beneath the membrane before they cause structural damage.
Drone Roof Inspections — Provides a full view of roof condition without added foot traffic on the surface.
Moisture Meters — Pinpoints leak sources for targeted, accurate repairs.