Modified Bitumen & BUR Repair
Modified Bitumen & Built-Up Roof Repair in Indianapolis
Modified bitumen (mod-bit) and built-up roofing (BUR) repair for Indianapolis-area commercial buildings, schools, and institutional properties. Seam, blistering, flashing, and surface restoration scopes.
Modified bitumen and built-up roofing are heritage commercial flat-roof systems that remain widely deployed across older Indianapolis commercial buildings, schools, university buildings, hospitals, and institutional properties. Many of these systems are still serviceable and can be maintained for years past their nominal warranty.
Modified bitumen comes in SBS (rubberized, more flexible) and APP (plasticized, more heat-stable) formulations and is installed by torch, cold-process adhesive, or self-adhered. BUR is built up from multiple plies of asphalt and reinforcing felt, often with a granulated cap sheet or coating. Repair scopes are different across each.
Major manufacturers referenced in the local market include GAF, Johns Manville, CertainTeed, Siplast, and Soprema. Some repair work on torch-applied systems requires specialized safety controls and crew certifications.
Common Scope Items
What This Service Typically Covers
- Modified bitumen seam and lap repair
- Built-up roof (BUR) blister, alligatoring, and surface repair
- Flashing repair at parapets, walls, curbs, and penetrations
- Pitch pan and HVAC penetration repair
- Granulated cap sheet patching and coating
- Coating-restoration evaluation on aged mod-bit / BUR roofs
- Pre-replacement inspection and replacement planning
Frequently Asked
Questions About Modified Bitumen & BUR Repair
Are modified bitumen roofs still installed today?
Yes — modified bitumen is still installed on certain commercial buildings, especially as a maintenance-friendly system on older buildings being re-roofed, and on properties where multi-ply redundancy is valued.
Can a built-up roof be coated instead of replaced?
Restoration coatings exist for BUR and modified bitumen and can extend service life when the membrane and details are sound. Whether coating is appropriate is a roof-by-roof decision based on condition.
Do you handle torch-applied modified bitumen safely?
Torch-applied systems require trained crews with hot-work safety controls (fire watch, extinguishers, permits where required by AHJ). Provider fit and safety practice are reviewed before dispatch on torch scopes.
Related Services
Related Commercial Roofing Service Pages
Submit a Commercial Roofing Request
Provider identity, expected arrival window, and rate structure are confirmed before dispatch. Commercial properties only — no residential roofing.
24/7 commercial roofing request line · Indianapolis metro