TPO · EPDM · Modified Bitumen — Installation · Replacement · Repair
Commercial Flat Roof Repair Throughout Indiana
Leak? Membrane damage? Storm damage? We’ll find the problem and repair it. TPO, EPDM, and modified bitumen expertise for commercial buildings across Indiana, with a free inspection and written repair estimate.
A Quality Job at A Fair Price
Warehouses · Manufacturing Facilities · Industrial Buildings · Retail Centers · Offices · Large Commercial Properties
Flat Roof Repair Services
Commercial Flat Roof Leak Repair Across Indiana
Local commercial flat-roof repair for active leaks, membrane damage, storm damage, flashing failures, and drainage-related problems—diagnosed before the repair is quoted.
Commercial Leak Repair
We trace active flat-roof leaks to the membrane, seam, flashing, penetration, or drainage detail causing the problem.
TPO Membrane Repair
Heat-welded TPO patches, seam repairs, and flashing corrections restore a watertight single-ply system.
EPDM Roof Repair
EPDM punctures, open seams, failed adhesives, and perimeter or penetration details are repaired for lasting performance.
Modified Bitumen Repair
Damaged mod-bit membrane, laps, flashing, and worn areas are repaired to restore layered waterproofing.
Flashing & Penetrations
We repair seams and flashing around HVAC units, vents, pipes, curbs, parapets, and other common leak points.
Storm & Emergency Assessment
Wind, storm, or sudden leak damage is assessed promptly, documented clearly, and scoped for repair.
Flat Roof Repair Cost
What Drives a Commercial Flat Roof Repair Estimate?
Repair cost depends on what failed and how far the damage extends. We inspect the roof before quoting so the written estimate reflects the actual repair—not a guess.
REQUEST A FLAT ROOF REPAIR ESTIMATE- Leak source and extent of damage
- TPO, EPDM, or modified bitumen system
- Size of the damaged membrane area
- Wet insulation or damaged roof deck
- Seams, flashing, HVAC, and penetrations
- Drainage problems, building height, and access
- Emergency conditions and temporary protection
Most Popular Choice
TPO
Thermoplastic Polyolefin — the #1 flat roofing membrane on the market today. Heat-welded seams, bright white reflective surface, and built to last 20–30 years.
TPO is the most popular single-ply membrane on the market today. It's heat-welded into a single continuous sheet — meaning no seams to fail. Its bright white surface reflects sunlight and reduces cooling costs, making it an Energy Star® favorite.
- ✓ Best energy efficiency — reflects up to 80% of UV
- ✓ Heat-welded seams stronger than the membrane itself
- ✓ Lightweight — less structural load
- ✓ Resistant to chemicals, mold, and debris
- ✓ 20–30 year service life
Modified Bitumen
Color Choice Available
An asphalt-based membrane applied in layers — thick, durable, and the only flat system where you can choose your granule color to match your building's look.
- ✓ 2-ply system for redundant waterproofing
- ✓ Granulated surface — color options available
- ✓ Handles moderate foot traffic
- ✓ Works well in colder climates
- ✓ 15–25 year service life
EPDM
Ethylene Propylene Diene Monomer
EPDM is a rubber roofing membrane that's been the commercial industry standard for decades — known for exceptional long-term durability and performance in cold climates.
- ✓ Proven 20–30 year track record
- ✓ Handles extreme temperature swings
- ✓ Excellent for cold-weather climates
- ✓ Resistant to ozone and UV degradation
- ✓ Typically black (white-coated versions available)
Quick Comparison
Color choice
- TPO
- White/Gray only
- Mod-Bit
- ✓ Yes
- EPDM
- Black only
Energy efficiency
- TPO
- Best
- Mod-Bit
- Good
- EPDM
- Fair
Cold climate performance
- TPO
- Fair
- Mod-Bit
- Good
- EPDM
- Best
Durability / foot traffic
- TPO
- Good
- Mod-Bit
- Best
- EPDM
- Good
Typical lifespan
- TPO
- 20–30 yrs
- Mod-Bit
- 15–25 yrs
- EPDM
- 20–30 yrs
Relative cost
- TPO
- Mid
- Mod-Bit
- Mid
- EPDM
- Lower
| Feature | TPO | Mod-Bit | EPDM |
|---|---|---|---|
| Color choice | White/Gray only | ✓ Yes | Black only |
| Energy efficiency | Best | Good | Fair |
| Cold climate performance | Fair | Good | Best |
| Durability / foot traffic | Good | Best | Good |
| Typical lifespan | 20–30 yrs | 15–25 yrs | 20–30 yrs |
| Relative cost | Mid | Mid | Lower |
No Guesswork, No Fake Numbers
How Much Does a Commercial Flat Roof Replacement Cost?
A reliable replacement estimate starts with the roof itself—not a generic price per square foot. These are the factors that shape the complete replacement scope:
Roof square footage
The single biggest driver — materials and labor scale with the total roof area.
Roof system selected
TPO, EPDM, and modified bitumen carry different material and installation costs.
Tear-off requirements
Whether the existing roof must come off — or can stay — changes the scope significantly.
Existing roof & deck condition
Saturated insulation or a deteriorated deck must be addressed before the new membrane goes down.
Insulation
Thickness and type of insulation affect both cost and long-term energy performance.
Penetrations & HVAC
Every unit, vent, and pipe needs flashing and detail work — busy roofs cost more than clean ones.
Drainage
Drains, scuppers, and slope corrections factor into the design and the price.
Building height & access
Taller buildings and tight sites take more logistics, equipment, and time.
Complexity & detail work
Parapets, curbs, transitions, and the amount of flashing all add labor.
Warranty & system specification
Membrane thickness, attachment method, manufacturer requirements, and warranty scope affect the complete roof assembly.
The only way to know what YOUR building will cost is to inspect it. We'll walk the roof, assess the existing system, insulation, deck, drainage, and details, then provide a written replacement estimate.
Let Us Walk Your Roof For Free
We'll assess your building, explain the options, and give you a written estimate — no pressure.
SCHEDULE MY FREE INSPECTION