The quick answer
For most flat and low-slope commercial roofs on the Georgia coast, TPO wins on value. It runs roughly 20 to 30% cheaper than PVC per square foot, reflects heat to cut cooling bills, and suits a clean warehouse, retail, office, or school rooftop. PVC wins when the roof faces grease or chemicals, like a restaurant with kitchen exhaust or a food-processing plant, because animal fats and oils soften TPO and attack its seams. In Coastal Georgia a well-built PVC roof commonly runs 25 to 30 years against 18 to 25 for TPO. Near Savannah the deciding factors are rooftop exposure and the attachment method for hurricane wind uplift, not salt air, because both membranes are inert plastics that do not corrode.
TPO vs PVC roofing is the single most common question commercial building owners in Savannah and Coastal Georgia ask when it is time to re-roof. Both are heat-welded single-ply membranes with long track records, and on the rooftop they look nearly identical. The difference between TPO and PVC roofing shows up in the chemistry, not the appearance: PVC is plasticized polyvinyl chloride, TPO is a polypropylene and ethylene-propylene rubber blend. That one distinction drives cost, chemical resistance, lifespan, and warranty terms. This guide settles PVC vs TPO with a real spec table, honest installed pricing for Coastal Georgia, and a plain decision rule you can apply to your own building in about two minutes.
If you came here asking is PVC better than TPO, the short answer is no, not universally. PVC is better on a rooftop that vents grease, oil, or chemicals. TPO is better on a clean rooftop where budget and reflectivity matter most. If you came here asking TPO or PVC, which is better for a warehouse or retail box with nothing but HVAC on the roof, TPO usually wins on cost per year of service. And if you are weighing PVC roof vs TPO for a restaurant, kitchen, or food plant, PVC is the safer call and the reason is covered in detail further down this page. Coastal Roofing of Georgia installs, repairs, and maintains both systems, so the recommendation you get from our commercial roofing team is not tied to one product line.
See both systems built layer by layer
Reading about a membrane is one thing. Watching one go together is another. We built interactive 3D walkthroughs of both assemblies so you can see the deck, insulation, fastening pattern, seam weld, and flashing details before you sign anything.
What is TPO Roofing?
TPO is a single-ply roofing membrane composed of thermoplastic polyolefin. It's one of the fastest-growing commercial roofing products in the United States due to its combination of performance, energy efficiency, and cost-effectiveness. TPO roofing membranes are typically white or light gray, providing excellent reflectivity to reduce cooling costs.
TPO Advantages
- Cost-effective: Typically 20-30% less expensive than PVC per square foot installed
- Energy efficient: Highly reflective white surface reduces cooling costs
- Flexible: Remains flexible in cold weather
- Environmentally friendly: Recyclable and doesn't contain chlorine
What is PVC Roofing?
PVC is a durable single-ply roofing membrane made from polyvinyl chloride. It's been used in commercial roofing for over 50 years and has a proven track record of durability and longevity. PVC membranes are available in white, gray, and tan colors, with white being the most common for energy efficiency.
PVC Advantages
- Superior chemical resistance: Excellent for buildings with grease, oils, or chemicals
- Longer track record: 50+ years of proven performance
- Flame resistant: The chlorine content makes most PVC membranes self-extinguishing
- Exceptional durability: Resistant to punctures and tears
TPO vs PVC Roofing: Full Side-by-Side Spec Comparison
The fastest way to settle the PVC vs TPO question is to put both membranes on the same sheet of paper. The table below is the comparison we walk building owners through on the roof: membrane thickness options, how the seams are made, chemical and grease resistance, reflectivity, realistic service life in Coastal Georgia, installed cost per square foot in this market, and the warranty terms you can actually get. Costs are 2026 Coastal Georgia market ranges for installed work, not quotes.
| Spec | TPO | PVC |
|---|---|---|
| Material | Thermoplastic polyolefin. A polypropylene and ethylene-propylene rubber blend with a reinforcing scrim. No plasticizers, no chlorine. | Polyvinyl chloride with added plasticizers and a reinforcing scrim. The plasticizers are what keep it flexible. |
| Thickness options | 45, 60, and 80 mil. 60 mil is the Coastal Georgia standard. 80 mil for high foot traffic, hail exposure, or a longer warranty. | 50, 60, and 80 mil. 60 mil is standard. 80 mil is typically required for a 30-year warranty and for FM Global rated assemblies. |
| Seam method | Hot-air welded. Weld window is narrower than PVC, so weld temperature and roller pressure have to be dialed in and test-welded daily. | Hot-air welded. Wider, more forgiving weld window. Old PVC can still be welded to new PVC years later, which makes future repairs simpler. |
| Grease and chemical resistance | Weak against animal fats, cooking oils, and petroleum. Grease softens the sheet and attacks seam adhesion. Not for kitchen exhaust rooftops. | Strong. Resists animal fats, cooking oils, most acids, and many industrial chemicals. This is the reason PVC exists on restaurant roofs. |
| Reflectivity | White TPO reflects roughly 80% of solar radiation when clean. Cool-roof rated products available in white, gray, and tan. | White PVC reflects in the same range as white TPO. Both are cool roofs. Neither has a meaningful reflectivity edge on day one. |
| Service life in Coastal Georgia | 18 to 25 years at 60 to 80 mil with maintenance. Thin 45 mil sheets and neglected roofs land closer to 15 to 20. | 25 to 30 years installed correctly. Long-term failure mode is plasticizer loss, which makes an old sheet brittle rather than leaky overnight. |
| Installed cost per square foot (Coastal Georgia, 2026) | $5.50 to $8.50 for 60 mil mechanically attached over insulation. $7.50 to $11.00 for 80 mil fully adhered. | $7.00 to $11.00 for 60 mil. $12.00 to $20.00 for a restaurant grease-exposure assembly. $14.00 to $24.00 for cold storage or an FM Global rated build. |
| Warranty terms available | Manufacturer material warranties commonly 15 to 20 years, with 30-year total-system coverage available on premium thicker assemblies. | 20-year standard, 25-year extended with wind-uplift coverage, 30-year premium on 80 mil and FM Global rated assemblies. |
| Ponding water tolerance | Acceptable, but standing water accelerates seam stress. Many warranties limit coverage where ponding exceeds 48 hours. | Better. PVC handles prolonged standing water more comfortably, which matters on older decks with low spots. |
| Cold-weather flexibility | Stays flexible in cold. A non-issue in Coastal Georgia, a real advantage in northern climates. | Stiffens more in cold, and gets stiffer as it ages and loses plasticizer. Again, largely irrelevant this far south. |
| Fire performance | Meets commercial fire ratings as part of a tested assembly. Will sustain a flame more readily than PVC on its own. | The chlorine in PVC makes it inherently flame resistant, and most PVC membranes self-extinguish when the flame source is removed. |
| Repairability years later | Weathered TPO must be scrubbed and prepped before a patch will weld reliably. Formulations have changed over the years, so matching an old sheet is not always clean. | Aged PVC generally still welds to new PVC after cleaning, which keeps long-term repair costs down. |
| Environmental profile | Chlorine free and recyclable. The usual pick when a sustainability spec is part of the project. | Contains chlorine and plasticizers. Recyclable through manufacturer take-back programs, but the profile is heavier than TPO. |
One line in that table decides most projects. If your rooftop vents grease, oil, or chemicals, the chemical-resistance row overrules everything else, including price. If it does not, the cost row and the service-life row usually settle it in TPO's favor. Every other difference is real but secondary. For a look at how these two stack up against rubber and metal, our commercial roofing materials guide for Savannah, GA runs the same comparison across all seven systems we install.
TPO or PVC: Which Is Better for Your Building?
Skip the spec sheet for a second and answer one question: what comes out of the vents on your roof? That answer decides the membrane more reliably than budget, square footage, or building age. Here is the decision guidance we give owners on site.
Choose TPO when:
- • The rooftop is clean. HVAC units, plumbing vents, and exhaust fans only, with no kitchen hood, fryer vent, or chemical discharge.
- • You are roofing a warehouse, distribution center, retail strip, office, church, or school.
- • Budget per square foot is a live constraint and you want the lowest responsible first cost.
- • Your ownership horizon is 15 to 20 years, so paying for a 30-year membrane does not pay you back.
- • Cooling cost is a priority. White TPO reflects heat all through the long Coastal Georgia summer.
- • A sustainability or chlorine-free spec is part of the project requirements.
- • You are covering a large clean roof area where a 20 to 30% material premium turns into real money.
Choose PVC when:
- • Anything greasy or oily reaches the roof. Restaurants, commercial kitchens, bakeries, food processing, and seafood plants all qualify.
- • The building vents solvents, acids, or process chemicals, including manufacturing and automotive facilities.
- • Refrigeration or cold-storage condensate runs across the membrane.
- • You plan to hold the building 25 years or more and want the longest realistic service life.
- • You need a 25 or 30-year manufacturer warranty with wind-uplift coverage.
- • The deck has known low spots and water will pond after heavy Coastal Georgia rain.
- • Long-term repairability matters, because aged PVC still welds cleanly to new PVC.
The 30-second rule: Walk the roof and look at the exhaust. If you can smell a fryer or see a dark stain fanning out from a hood vent, specify PVC. If the only things up there are HVAC curbs and plumbing stacks, specify TPO and put the savings into thicker membrane, better insulation, or a longer warranty term.
Is PVC Better Than TPO? The Grease Question That Decides It
Here is the part most TPO vs PVC roofing comparisons gloss over, and it is the one that actually costs building owners money in Savannah. Kitchen exhaust does not just put a smell on the roof. Hood vents discharge airborne animal fats and cooking oils that settle on the membrane around the vent and spread out with every rain. Those fats act as a solvent on TPO. The sheet softens, the surface gets tacky, and the heat-welded seams nearest the discharge lose adhesion first. On a restaurant rooftop, a TPO membrane that would have gone 20 years on a warehouse can need seam repairs within the first five.
PVC does not have that problem. Its chemistry resists animal fats, cooking oils, and most industrial chemicals, which is exactly why food service has defaulted to it for decades. That is the honest answer to is PVC better than TPO: on a grease-exposed rooftop, yes, decisively, and the price difference is not close to the cost of re-roofing early. On a clean rooftop, the advantage largely disappears and you are paying a premium for resistance you will never use.
Savannah has an unusually high concentration of buildings that fall on the PVC side of that line. The downtown and River Street restaurant density, the Pooler corridor, hotel kitchens, school and hospital cafeterias, and the seafood and cold-storage footprint along the ports all put grease or condensate on the roof. If your building is one of them, our Savannah restaurant roof guide works through the lifecycle math, and the PVC roofing Savannah GA page covers assemblies and warranty tiers in detail.
PVC Roof vs TPO Cost per Square Foot in Coastal Georgia
When people frame the choice as TPO roofing vs PVC, they usually stop at the sticker price. That is half the story. In this market a 60-mil TPO system mechanically attached over insulation runs about $5.50 to $8.50 per square foot installed, and an 80-mil fully adhered TPO build runs about $7.50 to $11.00. A 60-mil PVC system runs about $7.00 to $11.00 per square foot, a restaurant grease-exposure assembly runs $12.00 to $20.00, and a cold-storage or FM Global rated build runs $14.00 to $24.00. Those are 2026 Coastal Georgia market ranges, not quotes. The real number for your building moves with tear-off versus recover, deck condition, insulation R-value, roof access, and the warranty term you pick. For a project-specific figure, get a walk-through from a Savannah commercial roofing contractor instead of relying on a per-square-foot average.
Run it per year of service and the gap narrows fast. Take a 20,000 square foot roof. TPO at $7.00 per square foot is $140,000 across roughly 22 years, or about $6,360 a year. PVC at $9.00 per square foot is $180,000 across roughly 27 years, or about $6,670 a year. On a clean rooftop that is close enough that first cost and hold horizon decide it. On a greasy rooftop the TPO side of that math falls apart, because the membrane will not reach 22 years. Our 2026 commercial roof replacement cost guide works through full building examples.
Lifespan is where PVC earns its premium. A well-installed PVC roof commonly runs 25 to 30 years against 18 to 25 for TPO at 60 to 80 mil. Membrane chemistry is not the only variable, though. What actually determines how long either roof lasts:
- Membrane thickness (mil): A 60- or 80-mil membrane resists punctures and UV far longer than a thin 45-mil sheet, on either system.
- Seam-weld quality: Both membranes are heat-welded. Poor welds are the number-one cause of premature failure, which is why installer skill matters more than brand.
- Rooftop exposure: Grease from kitchen exhaust, chemical discharge, and heavy foot traffic all shorten TPO life quickly. PVC shrugs most of that off.
- Maintenance: Roofs that get a scheduled inspection twice a year reach their full rated life far more often than roofs that are ignored until they leak.
Coastal Georgia bottom line: For a warehouse, office, or retail box with a clean rooftop, a TPO roofing system usually delivers the best value. For a restaurant, food-processing plant, or any building venting grease or chemicals, a PVC roofing system is the safer long-term call. Still weighing other membranes? Our commercial roofing materials guide compares TPO, PVC, EPDM, and metal side by side.
How Coastal Georgia's Climate Affects the TPO vs PVC Choice
A membrane that performs well in a dry, mild climate does not automatically fit a low-slope roof near the coast. Around Savannah, Richmond Hill, and the barrier islands, four local conditions should weigh on your decision as much as the spec sheet does:
- Salt air and humidity: Both TPO and PVC are inert plastics, so neither one corrodes in salt air the way exposed metal fasteners or coated steel can. On the coast, the weak point is usually the metal edge trim and fasteners, not the membrane, which is why detailing and flashing quality matter as much as the sheet you pick.
- Hurricane wind uplift: Coastal Georgia sits in a high-wind zone, so the attachment method carries more weight than the brand. A fully adhered system or a tighter fastening pattern, paired with a thicker 60- or 80-mil membrane, gives you the wind rating a warehouse or retail box needs. Either membrane can meet those ratings when it is installed to the manufacturer's coastal spec.
- Long cooling season: Our cooling season runs most of the year, so the reflective white surface both membranes share pays off here more than it would up north. That reflectivity is a real line item on summer power bills for a large flat roof.
- Heavy rain and ponding: Coastal downpours expose any low spot on a flat roof. PVC's welds and chemistry tolerate prolonged standing water a little better, but on either system the fix is the same: proper slope, clean drains, and a roof that gets looked at before ponding turns into a leak.
The short version for a coastal building: match the membrane to the rooftop exposure, then spend your attention on attachment method, membrane thickness, and flashing detail. A Savannah commercial roofing contractor who installs both systems every week can walk the roof and tell you which combination actually fits your building and wind zone.
Installation: Where TPO and PVC Roofs Actually Fail
Both membranes install three ways: mechanically attached, fully adhered, or ballasted. The right method depends on the deck, the local code, and the wind-load requirement, which in Coastal Georgia is not a formality. On the failure side, the two systems fail in the same places, and almost none of them are the field of the sheet.
- Cold or over-hot seam welds: Both membranes are hot-air welded, and a weld that looks fine can peel apart in two years. TPO has the narrower weld window of the two, so daily test welds and probe checks matter more on a TPO job.
- Flashing at curbs and penetrations: HVAC curbs, pipe boots, and drains are where leaks start on both systems. The membrane rarely fails in the middle of the roof.
- Fastening pattern in the corners and perimeter: Wind uplift is highest at the edges. A pattern that meets code in the field and skimps at the corners is a hurricane-season problem waiting to happen.
- Edge metal: On the coast, the membrane outlasts the trim. Corrosion-resistant edge metal and proper termination detail matter as much as which plastic you picked.
That is why our answer to TPO vs PVC roofing always ends with the same caveat: the installer matters more than the membrane. A well-installed TPO roof beats a poorly installed PVC roof every time, and the price difference between the two systems is smaller than the price of doing it twice. Walk through the 3D TPO roofing system and the 3D PVC roofing system to see exactly which layers and details we are talking about.
Need Help Deciding?
Choosing between TPO and PVC roofing depends on your specific building requirements, budget, and long-term goals. Our roofing experts can assess your property and recommend the best solution.
Get Expert ConsultationTPO vs PVC Roofing: The Verdict
Both TPO and PVC are proven commercial membranes, and neither one is the right answer for every building. TPO is the better buy on a clean rooftop, where its lower cost per square foot and strong reflectivity do real work for 18 to 25 years. PVC is the better buy anywhere grease, oils, chemicals, or refrigeration condensate touch the membrane, where its chemical resistance and 25 to 30 year service life are worth the premium.
If you take one thing from this comparison, take this: look at the exhaust before you look at the price. Get the exposure question right and either membrane will serve you well. Get it wrong and you will pay for the roof twice. Coastal Roofing of Georgia installs, repairs, and maintains both systems across Savannah, Richmond Hill, Pooler, Hinesville, Brunswick, Statesboro, and the rest of Coastal Georgia. Call (912) 312-0507 or email Allen@coastalroofga.com and we will walk your roof, look at what is venting onto it, and tell you which membrane your building actually needs.