How long does a flat roof last in Indiana?

TPO 20–25 years, EPDM 25–30+ years, mod-bit 20–25 years when properly installed and maintained. Twice-yearly maintenance materially extends those numbers.

Can you install over my existing flat roof?

Sometimes — depends on existing system, moisture content, and structural capacity. Often a tear-off provides better long-term performance and warranty terms.

What about energy savings?

White TPO and PVC membranes are highly reflective (cool roof) and can reduce summer cooling loads materially. Tapered insulation upgrades also reduce overall HVAC demand.

Do you handle metal roof retrofits over flat roofs?

Yes — sloped metal-over-flat retrofits are an excellent option for buildings with chronic drainage problems. We engineer the structural attachment and drainage.

Commercial · Indianapolis, IN

Flat Roofing in Indianapolis, IN

Engineered flat-roof systems for Indiana commercial buildings.

Get Instant Estimate (317) 970-4687

About Flat Roofing

Flat roofs aren't actually flat — they're low-slope systems that need engineered drainage and the right membrane for your building's use, traffic, and budget.

We install and service every major flat-roof system used in Indiana commercial construction. System selection depends on slope, drainage, foot-traffic load, equipment loading, and budget — not a one-size-fits-all recommendation from a salesperson.

Drainage is the #1 long-term factor in flat-roof life. Ponding water doubles UV exposure on membrane and is responsible for the majority of premature flat-roof failures in central Indiana. Every install includes drainage review and tapered insulation engineering if existing drains can't move water in 48 hours.

Our crews are manufacturer-trained on Carlisle, Versico, GAF, and Johns Manville systems and certified to install for full system warranty eligibility — both material and labor coverage up to 25 years on qualifying jobs.

Our process

01
Drainage & substrate evaluation
We measure ponding, check existing insulation R-value, and confirm structural capacity before specifying a system.
02
System engineering
TPO, EPDM, or mod-bit selected based on slope, traffic, equipment, and budget — with tapered ISO if drainage requires it.
03
Manufacturer-certified install
Our crews hold current installation certifications for the major single-ply manufacturers.
04
Manufacturer field inspection
Required for full system warranty. We schedule and walk it with the manufacturer rep before close-out.