How much does commercial TPO roofing cost per sqft in Dallas Texas?
If you own a commercial building in Dallas and your flat roof needs work, TPO is probably on your radar. It should be roughly 50% of commercial roofs in the U.S. use it. But every contractor you call will give you a different number, and most won't explain why.
Here's what TPO roofing actually costs in the Dallas-Fort Worth market in 2026, broken down so you can compare quotes intelligently.
tl;dr
For a standard commercial TPO roof replacement in Dallas, expect to pay $5.50 to $10.50 per square foot fully installed. That includes membrane, insulation, labor, and tear-off of the existing roof.
A 5,000 sq ft commercial roof typically lands between $27,500 and $52,500 depending on the variables below.
What You're Actually Paying For
Every TPO quote is really four costs stacked together. Here's how they break down in the Dallas market:
TPO Membrane Material: $1.80 – $3.50/sq ft
The membrane itself is the cheapest part. Thickness matters - 45-mil is the budget option (10–15 year lifespan), 60-mil is the industry standard (15–20 years), and 80-mil is the premium play (20–30 years). For Dallas, we recommend 60-mil minimum. The hail exposure alone makes 45-mil a risk.
Insulation: $0.50 – $3.00/sq ft
This is where most people get surprised. Texas energy code requires R-25 continuous insulation for commercial roofs in Dallas (IECC Zone 3). If your existing insulation is shot, this line item can double your project cost. Polyiso board is the most common choice: about $2/sq ft installed.
Labor: $2.50 – $4.50/sq ft
Dallas labor rates for qualified TPO installers run on the higher side because demand is strong. Heat-welding seams correctly is a specialized skill, poorly welded seams are the number one cause of TPO failure. Don't chase the cheapest labor bid.
Tear-Off & Disposal: $1.00 – $2.00/sq ft
If your existing roof needs to come off (and it probably does if you already have two layers or any wet insulation), add this to the total. A roof recover (overlay) skips this cost but only works if the existing deck and insulation are dry and you have just one layer in place.
Installation Method Changes the Price
How the membrane gets attached to your building affects both cost and performance:
Mechanically Fastened: $2.00 – $3.10/sq ft — Most common and cost-effective. Screws and plates secure the membrane to the deck. Good for most Dallas commercial buildings.
Fully Adhered: $2.80 – $3.50/sq ft — Glued down for the best wind uplift resistance. Worth it if you're in a high-wind exposure area or want the cleanest look.
Ballasted: $1.50 – $2.50/sq ft — Loose-laid with river rock holding it down. Cheapest option, but adds massive weight to the structure and makes leak detection difficult. Rarely recommended for new installs.
Why Dallas Pricing Differs from National Averages
A few things push Dallas TPO costs slightly above or below the national range:
Working in your favor: Strong contractor competition in DFW means you can get competitive bids. Flat terrain and easy roof access keep staging costs down on most commercial buildings.
Working against you: Dallas sits in one of the most active hail corridors in the country. Smart building owners are choosing thicker membranes and impact-resistant cover boards, which adds $0.50–$1.50/sq ft. Summer heat also limits install windows — crews can't weld membranes properly when ambient temps exceed certain thresholds, which can extend project timelines.
What About the Old Tar-and-Gravel Roof?
If you're coming off an old built-up (BUR) or tar-and-gravel system, tear-off costs will be on the higher end ( sometimes $2.00–$3.00/sq ft ) because that material is heavy and messy to remove. The upside: you're replacing an outdated system with something that reflects up to 80% of solar heat instead of absorbing it. In Dallas summers, that translates to measurable cooling cost reductions.
How to Compare Quotes the Right Way
When you get three bids for a TPO roof, don't just look at the bottom-line number. Check these line items:
What membrane thickness is specified? (60-mil minimum for Dallas)
What insulation R-value is included? (Must meet R-25 code minimum)
Is tear-off included or is this a recover bid?
What warranty comes with the install; manufacturer and workmanship?
Is the contractor certified by the membrane manufacturer (GAF, Carlisle, Firestone, etc.)?
The cheapest bid almost always cuts corners on insulation or membrane thickness. The most expensive bid might be padding overhead. The right bid explains exactly what you're getting and why.
Bottom Line
TPO is the right call for most commercial flat roofs in Dallas. It's proven, energy-efficient, and cost-competitive. But the range between a $5.50/sq ft job and a $10.50/sq ft job is real and it comes down to membrane thickness, insulation scope, and who's doing the welding.
Get at least three quotes. Read the specs, not just the price. And if someone can't explain what's in their bid, that tells you everything you need to know.