Occupied Building Re-Roofing for commercial buildings across Dallas.
TPO (thermoplastic polyolefin) is the workhorse single-ply membrane for Dallas commercial flat roofs. It reflects heat, welds reliably with hot-air seam tools, holds up against UV better than older PVC formulations, and carries 20-year manufacturer NDL warranty paths from every major manufacturer (GAF, Carlisle, Johns Manville, Sika Sarnafil, Versico, Firestone).
We install TPO mechanically attached, fully adhered, or ballasted depending on building use, wind exposure, and the manufacturer's design package. Most Dallas TPO work is mechanically attached on tapered ISO over metal deck — the configuration that handles the metroplex's wind exposure and thermal cycling at the lowest installed cost per square.
60-mil TPO is the volume-grade specification for Dallas commercial buildings — adequate for most warehouse, retail, and office buildings with normal foot traffic and standard rooftop equipment. Carries a 20-year manufacturer NDL warranty from every major manufacturer.
80-mil TPO costs more per square but extends warranty life (up to 25 years from some manufacturers), handles higher mechanical-traffic environments, and provides additional puncture resistance. We spec 80-mil for buildings with heavy rooftop equipment, frequent maintenance traffic, or owners who want the longer warranty term and lower lifecycle cost.
Mechanically attached: Most common in Dallas. Membrane fastened with screws and plates through the membrane and insulation into the deck on a pattern designed against the building's wind-uplift requirement. Cost-effective and fast.
Fully adhered: Membrane bonded to the substrate with a TPO-compatible adhesive. Used when the project needs the cleanest aesthetic (no fastener telegraphing through the membrane), when the deck cannot tolerate additional penetrations, or when wind-uplift requirements exceed what mechanical attachment can deliver.
Ballasted: Membrane loose-laid with stone ballast on top. Rare in modern Dallas commercial work — most buildings cannot tolerate the structural load, and the system makes future repairs more complicated.
Seam failure: TPO seams are heat-welded. Cold welds, incorrect roller pressure, or contaminated membrane create seam failures that show up 2-5 years post-install. Our welder operators are factory-trained, we test every seam with a 5-lb test wheel during installation, and we run probe-test on every linear foot of seam before closeout.
Flashing detail failure: Penetrations, parapets, drains, and curb flashings are where most TPO roofs leak. We follow the manufacturer's published flashing details exactly — generic 'best practice' details get rejected by manufacturer warranty inspections. Every flashing detail is photographed against the manufacturer's spec sheet at closeout.
