TPO Roofing in San Antonio, TX

TPO stands for thermoplastic polyolefin, a single-ply membrane made for flat and low-slope roofs. It shows up in wide rolls. The crew fastens or glues it to insulation board over the deck and then welds every seam shut with hot air, so you end up with one continuous waterproof sheet and no exposed fasteners.

A TPO roofing installation in San Antonio with our crews usually goes like this:

1. Inspection and moisture check. We walk the old roof, probe for wet insulation and look at the deck from below wherever we can get to it. Wet insulation comes out. We won't bury it.
2. Tear-off or recover. One dry layer on a sound deck can take a recover board and new membrane right over it, which saves you tear-off labor and landfill fees. A soaked roof, or one that'd be the third layer, comes off.
3. Insulation and cover board. Polyiso sets the slope and gives the building the R-value it needs. On top goes a cover board, so the membrane has something firm under it. It handles hail better than bare foam, too.
4. Membrane and seams. The TPO sheet gets mechanically fastened or fully adhered, then each lap is hot-air welded and probed.
5. Flashing and details. Curbs, drains, scuppers, parapet walls and the line where a shingle slope meets the membrane (there's one in the photo above) get TPO-coated metal, welded corners and sealed terminations.
6. Final walk and cleanup. Seams get probed a second time, we run magnets for dropped fasteners, and you get the scope paperwork.

Square footage matters less to the schedule than the weather does.

Flat roofs here get hit two ways. Heat, then hail.

In August a roof surface runs a lot hotter than the air, and a dark one soaks all of it up. White TPO reflects a big share of that sunlight back. That's a big part of why so many South Side warehouses and so much strip retail along Loop 410 have switched to single-ply over the last two decades.

As for hail, the April 12, 2016 storm dropped 4.5-inch stones in Helotes, and the April 28 to May 1, 2021 event threw baseball-size hail across the city along I-10. TPO over a cover board holds up to hail better than old, brittle cap sheet. And if it does get punctured, a welded patch takes care of it. You don't need a new roof.

What really decides how long a TPO roof lasts, though? The person running the welder, more than the brand on the roll. Put a cold weld at the parapet on even a thick sheet and it'll leak by the second summer. So we keep the same people on our commercial work, crews that have worked side by side with us for over 20 years.

TPO isn't the only option for a low-slope roof. If you're comparing systems, our flat roofing and flat roof repair page puts TPO next to modified bitumen. If people are on your roof all the time and you'd rather have a granulated surface underfoot, go straight to modified bitumen roofing.

Most of our TPO roofing installation work in San Antonio is commercial. Warehouses, retail strips, offices, churches, plus HOA pool houses and recreation centers in the master-planned communities north of Loop 1604. Homes get it too. Plenty of mid-century houses in Monte Vista and the near South Side have a low-slope section over a porch, carport or addition, and those get the same membrane and welded details on a smaller roof.

When a storm damages a flat roof, there's usually an insurance conversation coming. Our in-house staff includes former insurance adjusters, and between them the team has 30+ years of insurance claim experience. If hail or wind opened up your membrane, we'll document it, meet the adjuster on the roof and handle the supplement. Our insurance claims page lays out all six steps.

We're based in San Antonio and do TPO jobs across Bexar County and the counties around it, and our Austin line handles projects in Travis and Williamson County. All of our low-slope and steep-slope work on commercial buildings is under commercial roofing.

We run 8 full crew teams, so your commercial TPO job isn't stuck in line behind residential storm calls. Texas-RRR is veteran owned. We've finished 2,800+ projects, and our owner brings 30 years of roofing experience to every bid. We only use American roofing brands, Owens Corning and GAF preferred, and we're registered and insured.

The estimate is free, it's in writing, and it's specific. Membrane thickness, attachment method, insulation and flashing scope, in plain terms a property manager, HOA board or lender can read without calling us to translate. To set up a flat roof inspection, call (210) 802-6906.