What Is a TPO Roof?
TPO (thermoplastic polyolefin) is a single-ply roofing membrane with heat-welded seams. It is a common choice for flat and low-slope commercial buildings across Georgia, including the Atlanta and Athens metros.
TPO comes in 45, 60 and 80 mil thicknesses. White TPO reflects sunlight, and cool roof savings are greatest in hot, sunny climates, which makes it a practical fit for Georgia summers.
Not sure which system suits your building? Compare options on our commercial flat roofing page, or return to our commercial roofing services.
TPO Quick Facts
| Best For | Flat and low-slope commercial roofs |
| Thickness | 45, 60 or 80 mil |
| Seams | Hot-air welded |
| Attachment | Mechanically attached or fully adhered |
| Typical Service Life | 20 to 30 years |
Service life varies with installation, climate and maintenance. Source: GAF commercial roof lifespan guide.
How TPO Is Installed on Georgia Buildings
Mechanically Attached
Fasteners secure the membrane to the deck. This is the most common attachment method for single-ply roofs.
Fully Adhered
The membrane is bonded to the substrate with adhesive. This approach suits concrete decks and high-wind exposure, which matters during Georgia storm season.
Heat-Welded Seams
Seams are joined with hot air to fuse the sheets together, instead of relying on tape or adhesive.
Flashings and Details
Edges, curbs and penetrations are where leaks usually start, so these details get close attention during installation.
Learn more about single-ply attachment methods.
Keeping a TPO Roof Performing in Georgia
A TPO roof needs regular care to reach its full service life. Trade guidance calls for inspections twice a year, in spring and fall, plus after major storms. Georgia heat, humidity and severe weather make those checks worth keeping.
Clear Debris and Drains
Keep drains and scuppers open so water does not sit on the roof.
Check Flashings
Inspect flashings, curbs and penetrations for gaps or movement.
Protect Foot Traffic Areas
Use walkway pads around rooftop equipment that gets regular service.
Repair Early
Small punctures are easier to fix before water reaches the insulation. See our commercial roof repair service.
EXPLORE
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WHAT YOU NEED TO KNOW
TPO Roofing Questions
GAF cites a typical range of 20 to 30 years. Installation quality, climate and maintenance all affect the result.
TPO comes in 45, 60 and 80 mil. Thicker membranes generally cost more, and we recommend a thickness based on your building and goals.
White TPO reflects sunlight, and cool roof savings are greatest in hot, sunny climates. Actual savings depend on your insulation and building use.
Sometimes. A recover depends on your current roof and the insulation below it. An inspection shows whether a recover or a tear-off makes sense.
Twice a year, in spring and fall, and after major storms.