TPO & Flat Roofing for Additions, Porches, and Commercial Buildings
Flat and low-slope roofs need a different skill set than a standard shingle roof. We install and repair TPO and modified bitumen systems built to actually shed water instead of trapping it.
Why TPO Is Our Go-To Flat Roofing Material
TPO (thermoplastic polyolefin) has become the most common flat and low-slope roofing material for good reason: it's a single-ply membrane that gets heat-welded at every seam — not glued or taped — which produces a genuinely watertight bond rather than a weak point that fails first. Its light or white surface reflects a meaningful amount of solar heat compared to a dark modified bitumen or old-style tar roof, which matters on a Texas summer roof deck.
We also install modified bitumen where it's the better fit — certain low-slope applications and re-roofing situations still favor it — and can walk you through which system makes sense for your specific roof rather than defaulting to one material regardless of the job.
Flat roofing shows up more often than people expect on residential properties too: additions, covered porches, garages, and outbuildings frequently have a low-slope section that needs this exact expertise, not a standard shingle approach forced onto a roof pitch it was never designed for.
Flat Roof Cost Range
| Material | Cost/sq ft |
|---|---|
| TPO membrane | $4.00–$10.00 |
| Modified bitumen | $4.50–$9.00 |
Planning range only. Actual pricing depends on square footage, roof access, and existing deck condition.
Get a Flat Roofing EstimateRelated Services
Commercial Roofing
Low-slope systems for businesses and property managers.
Learn more about Commercial RoofingRoof Installation
New-construction and addition flat-roof installation.
Learn more about Roof InstallationFlat Roofing Questions
What is TPO roofing?
TPO (thermoplastic polyolefin) is a single-ply white or light-colored membrane welded at the seams, widely used on flat and low-slope commercial and residential additions. It reflects heat well, resists UV and chemical exposure, and is generally the most cost-effective flat roofing option.
How long does a TPO roof last?
20 to 30 years with proper installation and maintenance, depending on membrane thickness and how well seams and flashing details are executed — the areas most prone to premature failure on a poorly installed flat roof.
What's the difference between TPO and modified bitumen?
TPO is a single-ply membrane, heat-welded at the seams. Modified bitumen is a multi-layer asphalt-based system, torch-applied or self-adhered. TPO is generally lighter and more reflective; modified bitumen has a longer track record on certain low-slope applications. We'll recommend the right fit for your specific roof.
Can flat roofing be used on a house, not just a commercial building?
Yes — flat and low-slope roofing shows up on additions, porches, garages, and outbuildings on residential properties throughout Fort Worth, not just commercial buildings.
Get a Flat Roofing Estimate
Free estimate, written and itemized. We serve Fort Worth 76164 and greater Tarrant County.