Commercial EPDM Roofing in Texas: $11.00–$16.00 per Sq Ft Installed

EPDM is a synthetic rubber membrane (ethylene propylene diene monomer) in the commercial single-ply roofing family, sheet-applied over your building's flat or low-slope deck. It has one of the longest field track records of any commercial membrane, which is exactly why property managers keep specifying it: the performance data goes back decades, not years.

Here's the short version of why it lasts. Rubber handles two things Texas throws at a roof better than most materials: ultraviolet exposure and thermal cycling. EPDM weathers UV without getting brittle, and it stays flexible when the deck contracts on a cold morning and expands under afternoon sun. That cold-flex property is why EPDM shows up on so many older buildings still watertight past year 20.

You'll see it in two colors. Black EPDM is the traditional membrane: lowest cost, excellent weathering. White EPDM carries a reflective surface that cuts rooftop heat gain, which matters if you're managing cooling load on a conditioned building. Both are the same rubber chemistry underneath.

EPDM is a fit when your building has a genuinely flat or low-slope roof, you want a membrane with a long proven history, and you're planning to hold the asset long term. It's less of a fit if your roof sees heavy grease or chemical exposure, which is a PVC conversation, not an EPDM one.

Commercial EPDM roofing in Texas runs $11.00 to $16.00 per square foot installed. Your final number moves with roof size, tear-off versus recover, deck and drainage condition, and building access. Ballasted systems sit toward the lower end; fully adhered systems sit toward the higher end.

That $11.00–$16.00 per square foot is the installed rate for a new EPDM system (membrane, attachment, flashings, and terminations), not a materials-only figure. What's in scope: full assessment and photos of the existing roof, a deck and substrate condition report, manufacturer-specified installation, all penetration flashings at HVAC curbs and drains, code-required drainage notes, permit, warranty registration, and a final walkthrough with you or your facility manager.

What moves the number: the attachment method you choose (ballasted, mechanically attached, or fully adhered), whether the existing roof gets torn off or you recover over one existing layer, the condition of the deck once it's exposed, drainage corrections, and how hard the roof is to reach with material and equipment. Because those variables are building-specific, a real per-square-foot number for your roof comes from the assessment, not from the curb.

Updated July 2026, Texas commercial pricing. Final price depends on existing roof condition, deck substrate, drainage requirements, and access complexity.

For a side-by-side on how EPDM prices against the other membranes, see the single-ply roofing cost breakdown.

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The honest answer depends on your roof, but the core trade-off is simple, so let's be straight about it. EPDM and TPO are both single-ply membranes with long service lives. The real difference is how the seams go together, and seams are where flat roofs leak.

TPO seams are heat-welded. A hot-air weld fuses two sheets into one continuous monolithic surface. That welded seam is a genuine advantage, which is why GAF EverGuard TPO is ARP's flagship single-ply recommendation for most new commercial work.

EPDM seams are taped or adhered. Rubber can't be heat-welded, so EPDM laps are joined with factory seam tape or splice adhesive and sealed at the edge. Done to spec, those seams hold for decades: the millions of square feet of EPDM still watertight across the country prove it. But the seam is a bonded joint, not a fused one, so seam detailing and workmanship carry more of the load. That's the honest trade against TPO.

Where EPDM earns its place: the longest field track record of any membrane, standout UV and cold-flex performance, and a lower entry cost than PVC. Where you'd look elsewhere: heavy grease or chemical exposure points you to PVC single-ply; a preference for welded seams and a bright white reflective sheet points you to TPO single-ply.

Related single-ply guides

Strip the jargon and EPDM has one honest weakness: it fails at the seams and the details long before the field membrane wears out. The rubber sheet in the middle of your roof is almost never the problem. The lap seams, the flashings at the HVAC curbs, the drain terminations, and the parapet details are where water finds a way in, and those are workmanship, not material.

That's the disadvantage worth knowing before you sign anything. A poorly detailed EPDM roof can leak in year three; a properly detailed one runs past year 20. Same membrane, different install.

I've been doing this long enough to know that most roof problems aren't weather problems. They're installation problems. Weather just reveals them.

So we build the documentation around the failure points, not the field. Every EPDM assessment photographs the seams, the curb flashings, the drains, and the terminations, because that's where your roof will either hold or quit. When we scope a system for you, the seam method, the flashing detail, and the termination bar spec are all in writing before the crew arrives.

EPDM installs three ways, and the right one depends on your building, not on what's fastest for the crew.

1. Ballasted: the membrane is loose-laid and held down with stone ballast or pavers. Lowest cost, fastest install, best on structurally sound decks that can carry the weight.
2. Mechanically attached: the membrane is fastened to the deck along the seams. A middle-ground system, common on metal and wood decks.
3. Fully adhered: the membrane is bonded to the substrate with adhesive across the whole roof. Highest cost, cleanest wind performance, best where uplift matters.

Membrane thickness is part of the spec too. Commercial EPDM is typically 45, 60, or 90 mil; 60 mil is the common standard, with 90 mil where you want extra puncture resistance on a high-traffic roof.

The install itself follows the same discipline every ARP commercial project does: a written scope before contract, tear-off (or a code-compliant recover over one existing layer), deck and drainage inspection with a condition report, manufacturer-specified installation, all penetration flashings detailed, permit pulled, warranty registered, and a final walkthrough with you. The crew on your roof is a vetted installation team we deploy and supervise under an ARP project manager. You get one point of contact from scope through warranty, and photo documentation at each stage to share with ownership.

One line that belongs in that scope: new scuppers and drains. A new EPDM membrane almost always needs new drainage, and reusing old scuppers and drains under a fresh membrane is technically unsound, because those aged connections are where leaks start. Positive drainage is a warranty condition for many single-ply manufacturers, so we carry scuppers and drains as an itemized line rather than leaving warranty-required drainage off the bid to look cheaper. When you compare EPDM quotes, check whether new drainage is actually in the other contractor's scope.

Who you're actually hiring for your EPDM project

When you sign a commercial roofing contract, you're hiring the people who scope and stand behind the work, not a logo. ARP is a GAF GoldElite Commercial Contractor (the umbrella credential covering GAF's commercial single-ply and coating systems), an Elevate Red Shield Licensed Contractor, and a UNIFLEX Premier Elite Contractor. EPDM itself is a brand-agnostic membrane, so we install it to manufacturer specification and industry standard, whichever compound your building calls for, without forcing you into a system that isn't the right fit.

Randal Williams is a former commercial high-rise field engineer and Xactimate expert with 15+ years in roofing and construction. He has scoped and documented more than $7 million in insurance claim work across Texas, including single commercial claims above $2 million, supporting property managers and building owners through the claims process as the contractor of record.

You're probably the right fit if you:

• Want a written scope of work before anyone touches the roof, every time
• Need photo documentation at each stage to share with ownership or your board
• Manage a flat or low-slope commercial building suited to single-ply
• Want one contractor for repair, replacement, maintenance, and storm response
• Plan to hold the property long term and want a partner, not a one-time vendor
• Want a contractor whose COO is a Xactimate expert who has scoped and documented $7M+ in commercial insurance claim repair projects for storm work

You're probably not the right fit if you:

• Need the lowest bid in the market, a respected priority we can't always match
• Need work to begin within 24 hours with no inspection or documentation
• Manage a building under 1,000 square feet, where our minimum scope makes it uneconomical for you
• Have been quoted a price that doesn't allow the membrane to be installed to spec

Before you sign, ask any commercial roofer these three questions

1. "Show me the written scope (membrane, mil thickness, seam method, and flashing detail) before I sign." A real single-ply scope names the system and the details. A one-line "install EPDM" quote is where projects go wrong.
2. "Who's my single point of contact, and do I get photo documentation at each stage?" You should get one project manager from scope through warranty, plus a photo record at tear-off, mid-install, and final.
3. "What manufacturer warranty gets registered in the building's name, and when?" Ask which certification the contractor holds, what warranty term it unlocks, and the registration window. Vague answers mean the warranty probably isn't real.

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Tell us about your building and we'll walk the roof, document the seams and details that decide its future, and put a written scope and number in front of you, before any commitment.

Request Your Commercial Assessment or call (210) 714-0040.

• ASTM D4637: the standard specification behind EPDM sheet membrane referenced in the systems and thickness sections.

Manufacturer Certifications:

• GAF GoldElite Commercial Contractor
• Elevate Red Shield Licensed Contractor
• UNIFLEX Premier Elite Contractor

Industry Membership:

• BBB A+ Member
• CTRCA (Central Texas Roofing Contractors Association) Member