Commercial roofing
Modified Bitumen (Torch-Down) Roofing in Atlanta
Modified bitumen is a tough, multi-ply asphalt roof system built for durability and foot traffic. We install torch-applied and self-adhered modified bitumen on commercial, institutional and government buildings, and we’re a Polyglass Premio Select Contractor.
Modified Bitumen Roofing estimate
No obligation. We usually call back the same business day.
The system
What is Modified Bitumen?
Modified bitumen is asphalt reinforced with polymers (APP or SBS) and fabric, installed in two or more plies. Torch-down systems are heat-applied with a torch; self-adhered and cold-applied versions avoid open flame where needed. The result is a thick, redundant membrane that resists punctures.
Our recent modified bitumen torch-down replacements include an Airport Rescue & Fire Fighting facility in Fulton County and a Department of Veterans Affairs facility in Decatur, both over R-30 insulation.
A good fit for
- Government and institutional buildings
- Roofs with heavy equipment and foot traffic
- Replacements of existing built-up or mod-bit roofs
- Complex roofs with many penetrations
Why Modified
Advantages of modified bitumen roofing
Multi-ply redundancy
Two or more layers mean a single puncture rarely becomes a leak.
Handles foot traffic
A tough surface for roofs with frequent equipment service.
Flame-free options
Self-adhered systems are available where torching isn’t allowed or practical.
Manufacturer backing
As a Polyglass Premio Select Contractor, we have access to Polyglass NDL warranties on qualifying systems.
Recent work
Modified Bitumen Roofing projects
Airport Rescue & Fire Fighting (ARFF) renovation
Fulton County, GA · Dec 2024 – Aug 2026
R-30 roof insulation, modified bitumen torch-down roof replacement
View projectDepartment of Veterans Affairs facility
Decatur, GA · Feb 2026 – Oct 2026
R-30 roof insulation, modified bitumen torch-down replacement, standing seam metal, concealed wall system
View projectFAQ
Modified Bitumen Roofing questions
How long does a modified bitumen roof last?
Properly installed multi-ply modified bitumen commonly lasts around 20 years, and often longer with regular maintenance.
Is torch-down roofing safe?
Torch-applied roofing is done by trained crews following fire-safety procedures. Where open flame isn’t appropriate, we use self-adhered or cold-applied modified bitumen instead.
Can modified bitumen be repaired?
Yes. Blisters, splits and flashing failures can usually be cut out and repaired with compatible materials.