EPDM rubber roof systems for Indianapolis commercial buildings — 60-mil and 90-mil, fully adhered and ballasted, with Climate Zone 5A insulation and vapor control details for Indiana's freeze-thaw climate.
What defines us is not only the scale of our work but the people who make it possible.
Every roof we build reflects care, skill, and pride from a team that treats each project like their own.
At Commercial Roofers Indianapolis, roofing is about people as much as it is about performance. Our full-time, in-house workforce is the most certified team under one roof in Indiana and among the top in the nation.
Our roofers are trained and supported to do their best. Many have been with us for decades, and several families now have multiple generations working side by side.
Nearly a century later, Commercial Roofers Indianapolis is a commercial roofing operation names in commercial roofing, combining our process, innovation, and a people-first approach to deliver excellence on every job.
The business expands from residential to commercial roofing, establishing a strong reputation for quality and reliability across Pennsylvania.
The second generation brings the company’s expertise to Texas, officially founding Commercial Roofers Indianapolis and completing its first major project: the airport terminal at Indianapolis.
1990s
Commercial Roofers Indianapolis grows into a large-scale commercial contractor, delivering projects for warehouses, industrial facilities, and corporate developments across the region.
We are the only full service commercial roofing contractor that safely delivers a quality, on time roof by Commercial Roofers Indianapolis values driven employees, at a competitive price.
To is a commercial roofing operation commercial roofing company by combining documentation discipline with modern operational excellence and innovation in single-ply roofing and architectural metal systems.
Our investment in continuing education and dual certifications keeps our workforce at the top of their craft. That’s why clients trust Commercial Roofers Indianapolis for complex commercial builds, re-roofing, and maintenance projects, knowing the work will always be done right.
EPDM has been on Indianapolis commercial flat roofs since the 1980s, and the 60-mil and 90-mil current formulations outperform early-generation material by a significant margin. We install fully adhered and ballasted EPDM with insulation stacks sized to Indiana IECC 2021 Climate Zone 5A requirements.
Ethylene propylene diene terpolymer — EPDM rubber — is the membrane that built the Indianapolis commercial roofing market before TPO existed. Buildings along the Meridian Street corporate corridor, in the Castleton industrial park, and in the older Marion County warehouse stock carry first- or second-generation EPDM that is now in active replacement cycles. The 60-mil and 90-mil current EPDM formulations are substantially improved over the 45-mil systems installed in the 1980s and early 1990s — better seam adhesive chemistry, better UV resistance, longer documented service life.
EPDM's advantage in Indianapolis conditions is its flexibility across the full thermal range. At -13°F — the low recorded during the 2014 polar vortex event — EPDM remains pliable where PVC becomes brittle and TPO is near its lower flexibility threshold. That cold-temperature performance is relevant in Indianapolis buildings that run unheated or underheated through Indiana winters: agricultural buildings, some warehouse configurations, storage facilities with minimal HVAC.
The primary EPDM failure mode in Indianapolis is seam adhesion. Older systems used solvent-based seam adhesives that dry out and peel over 15 to 20 years, particularly at parapet and penetration flashings where the joint sees the most freeze-thaw movement. Modern EPDM seam tape and bonding adhesive chemistry is substantially more durable, but the seam detail still requires inspection on a documented annual schedule to hold a manufacturer warranty intact through 20-year terms.
Fully adhered EPDM is the specification for most Indianapolis commercial buildings where the owner wants minimal rooftop profile and good wind-uplift resistance without the weight of ballast. The adhesive bond requires a clean, dry substrate and installation above 45°F ambient — a constraint that limits adhered EPDM work to roughly mid-April through October in Indianapolis without heated staging. We document the installation temperature in the project record for the manufacturer warranty file.
Ballasted EPDM with river-washed stone or pavers is specified for older Indianapolis warehouse buildings where the deck cannot support the fastener density required for mechanically attached single-ply, or where the owner wants a recover system that does not penetrate the existing membrane. Ballasted systems require structural confirmation that the deck and building framing can carry the ballast load — we document this in the scope before material is ordered.
Mechanically attached EPDM is less common than mechanically attached TPO in Indianapolis new construction, but it appears in specific recover applications. The primary difference from TPO is that EPDM seams are taped rather than heat-welded — which requires different inspection technique and a different quality-control protocol during installation.
EPDM systems in Indianapolis are built on the same insulation stack as TPO: ISO board to effective R-30 per Indiana IECC 2021 Climate Zone 5A, tapered where needed for positive drainage, with a vapor retarder on the warm side of the insulation in buildings with elevated interior humidity. EPDM is a dark membrane — black in its standard formulation — which means summer surface temperatures run 20 to 30°F higher than white TPO or PVC. This affects the thermal calculation: a higher roof surface temperature drives more heat into the building through the insulation, increasing the cooling load and making the insulation thickness more important for operating-cost performance.
White-coated EPDM is available from several manufacturers for buildings where the owner wants to reduce cooling load without switching to a different membrane. We specify EPDM coating only when the existing membrane is in documented sound condition — coatings do not repair seam failures and are not a substitute for failed membrane replacement.
The recover-versus-replace decision on an aging Indianapolis EPDM system turns on three findings from the roof walk: moisture core results in the insulation, deck condition under any identified wet areas, and seam condition across the membrane field. If moisture cores show saturation in more than 25% of the insulation area, replacement is the honest scope — recovering over wet insulation traps moisture that freezes in January Indianapolis winters and accelerates deck corrosion.
Buildings with sound insulation and sound deck can often accept a recover with a new single-ply membrane — either EPDM over EPDM or TPO over EPDM. We document the recover option with the weight addition (relevant for older buildings at or near their structural design limit) and the warranty path available under each scenario before the owner makes the capital decision.
Our project managers will walk the roof, pull moisture cores if the recover-versus-replace decision depends on insulation condition, and deliver a written scope with manufacturer warranty path.
Tell us about the building and the roof problem. We'll document it and put a plan in writing — with an honest repair-vs-replace recommendation and no upsell pressure.
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