By The Roofing Brief Team. Last reviewed: October 2026.
The tpo vs pvc membrane decision comes down to one test: if the roof will see grease, oils, fuels or chemicals, specify PVC; if it will not, TPO installs for about $1 to $2 less per square foot. HomeGuide’s November 2025 flat roof guide prices TPO at $4 to $10 and PVC at $5 to $12 per square foot installed, so PVC runs 20 to 25 percent higher across the range. Related: TPO membrane pricing. Get it backwards and you either overspend on a warehouse that did not need PVC, or you put TPO under a kitchen exhaust, a condition Carlisle’s own Sure-Weld TPO specification flags for manufacturer review before installation.
The Short Version
TPO (thermoplastic polyolefin) is a polyethylene/polypropylene blend with no plasticizer, made to ASTM D6878. It is white by default and heat-weldable. Related: PVC roof cost installed. PVC (polyvinyl chloride) contains plasticizer that gives it flexibility and chemical resistance, and is made to ASTM D4434. Both need a design slope of at least 1/4 in per foot under IBC section 1507.13.1, per the 2018 International Building Code as adopted in Seattle’s Chapter 15. HomeGuide gives TPO a 10 to 25 year lifespan and PVC 20 to 30 years.
If your building is a warehouse, office, school, retail, multi-family, or light manufacturing with no grease or chemical exposure, 60-mil TPO covers it at the lowest installed price. If the building is a restaurant, food plant, lab, hospital, or any roof where exhaust or equipment deposits grease, fat, oil or solvents on the membrane, specify PVC: Johns Manville’s PVC data sheet calls the sheet “inherently resistant to oils, air conditioning coolants, fuels and grease.”
| Attribute | TPO | PVC | Source |
|---|---|---|---|
| Installed cost per sq ft | $4 to $10 | $5 to $12 | HomeGuide, Nov 2025 |
| Material standard | ASTM D6878 | ASTM D4434 | IBC 1507.13.2 |
| Minimum design slope | 1/4:12 | 1/4:12 | IBC 1507.13.1 |
| Chemistry | Polyethylene and polypropylene blend, no plasticizer | Polyvinyl chloride with plasticizer | |
| Grease and oil contact | Carlisle requires project review before install | JM: resistant to oils, coolants, fuels and grease | Carlisle guide spec; JM RS-8927 |
| White solar reflectance, initial / 3-yr aged | 0.77 / 0.70 (JM TPO) | 0.86 / 0.70 (JM PVC) | JM data sheets, CRRC values |
| Lifespan | 10 to 25 years | 20 to 30 years | HomeGuide, Nov 2025 |
| Longest warranty on 60-mil | 20 years (JM TPO 60) | 20 years (Sarnafil G410 and S327 60 mil) | JM RS-8633; Sika warranty selection guide |
| Longest warranty on 80-mil | 30 years (JM TPO 80) | 30 years (JM PVC FB 80; Sarnafil 80 mil) | JM data sheets; Sika guide |
| Stock colors (examples) | JM TPO: white, grey, tan | JM PVC: white, Grey ES, Sandstone ES | JM data sheets |
Chemistry: Why It Matters
Single-ply membranes look interchangeable from the ground, but the polymer chemistry decides what each membrane resists. The material standards differ too: ASTM D6878 for TPO and ASTM D4434 for PVC, per IBC 1507.13.2.
TPO is a polyolefin: a blend of polyethylene and polypropylene with additives for UV stability, flexibility, and weldability. No plasticizer means there is nothing to migrate out of the sheet as it ages. The tradeoff is oil and fat exposure: Carlisle’s Sure-Weld adhered guide specification requires that projects where the membrane will contact “petroleum-based products, waste products (i.e., grease, oil, animal fats, etc) and other chemicals” be sent to Carlisle for review before installation.
PVC is polyvinyl chloride with plasticizer, which keeps the sheet flexible through temperature swings and gives it resistance to grease, oils and fuels, per JM’s PVC data sheet. Sika, which says it pioneered PVC roofing in 1962 in its Sikaplan versus TPO comparison sheet, claims more than 50 years of performance history using the same basic membrane formulation. US PVC sheets come from Sika (Sarnafil and Sikaplan), Carlisle, IB Roof, Johns Manville and Elevate, among others.
Installed Cost: The Real Numbers
HomeGuide prices TPO at $4 to $10 per square foot installed and PVC at $5 to $12, and puts commercial flat roofs at $4 to $11. This Old House’s flat roof cost guide (March 2026, Homewyse data) prices TPO at $8 to $11 per square foot on a 2,000 square foot roof. What moves the number within those ranges: sheet thickness (JM sells TPO in 45, 60 and 80 mil), attachment (HomeGuide ranks ballasted cheapest, then mechanically fastened, with adhered most expensive), and polyiso insulation at $0.50 to $3.00 per square foot.
| 30,000 sq ft warehouse reroof (worked example) | TPO at $4 to $10 | PVC at $5 to $12 | PVC premium |
|---|---|---|---|
| Installed membrane system | $120,000 to $300,000 | $150,000 to $360,000 | $30,000 to $60,000 |
| Tear-off at $1 to $2 per sq ft (HomeGuide) | $30,000 to $60,000 | $30,000 to $60,000 | $0 |
| Total | $150,000 to $360,000 | $180,000 to $420,000 | $30,000 to $60,000 |
That $30,000 to $60,000 premium is the central question. On a food plant where grease would otherwise void or shorten a TPO warranty, it buys a membrane rated for the exposure. On a dry-goods warehouse with no exhaust on the roof, the same money buys nothing the 60-mil TPO warranty does not already cover. For broader benchmarks, our commercial roof replacement cost piece has the per-system per-square-foot numbers in context.
Chemical and Grease Resistance: Where PVC Wins
Rooftop kitchen exhaust fans on restaurants and fast-food buildings deposit grease, animal fat and oil on the membrane around the fan. That is the exact contact Carlisle’s TPO specification routes to manufacturer review, and the exposure the Johns Manville PVC data sheet lists as a strength. The practical rule: if any equipment on the roof vents grease or oil, price 60-mil or thicker PVC, or at minimum get the TPO maker’s written approval for the exposure before signing.
The same logic extends to other buildings with chemical exposure on the roof surface: paint and printing shops (solvents), food processing (wash-down chemicals and animal byproducts), labs and hospitals (exhaust from fume hoods and sterilizers), and airport buildings near refueling (fuel residue). The JM PVC FB 80 mil sheet names oils, air conditioning coolants, fuels and grease specifically; for solvents and lab exhaust, ask the manufacturer for a chemical resistance chart for the named compound before choosing either sheet.
For warehouses, offices, schools, retail, and multi-family with no chemical exposure, the membrane sees rain, snow, UV, and occasional HVAC condensate. That is the service HomeGuide’s 10 to 25 year TPO lifespan and JM’s 20-year 60-mil TPO guarantee are written for.
Heat-Weldability: A Tie
Both TPO and PVC are thermoplastic. Both get installed with hot-air welders that fuse the seams into a single piece. This is the structural difference from EPDM, a thermoset sheet (ASTM D4637) whose seams are glued or taped rather than welded.
The makers disagree about which sheet welds more easily, so read their claims as marketing. Sika’s comparison sheet says its Sikaplan PVC shows a visible “bleed out” when a seam is welded properly and can be probed right away, while TPO shows no bleed out and needs a wait before probing; it also says aged TPO is “very difficult to re-weld and/or patch.” The Johns Manville TPO data sheet counters that its sheet has “one of the widest melt windows” for welding across speeds and temperatures. Both demand a qualified installer (see our commercial flat roofing contractors) and probe testing of every seam.
Lifespan and Field History
TPO has been on commercial roofs since the 1990s, per Sika’s comparison sheet, which also says most TPO makers are on their second to fourth formulation. Current TPO is sold by Carlisle, GAF, Johns Manville, Versico and Elevate, the former Firestone brand that became part of Amrize when Holcim completed its North American spin-off on June 23, 2025, per the Elevate history timeline. HomeGuide gives TPO a 10 to 25 year lifespan.
PVC has the longer record. Sika’s oldest roofs page says it has “numerous roofs that are currently over 35 years old” and still performing. HomeGuide gives PVC a 20 to 30 year lifespan. Sika’s longest standard warranty is 30 years, and only on 80-mil Sarnafil G410 or S327 sheet.
The lifespan gap narrows when you compare equal specs: JM caps its 60-mil TPO at a 20-year guarantee and Sika caps 60-mil Sarnafil PVC at 20 years too. The PVC carries more margin for oil and grease exposure; the TPO costs $1 to $2 less per square foot at HomeGuide’s prices.
Color and Energy: Both Reflective
Both membranes come in white as the default. JM’s data sheets list CRRC values of 0.77 initial and 0.70 three-year aged solar reflectance for white JM TPO, and 0.86 initial and 0.70 aged for white JM PVC, with an SRI of 108 initial and 84 aged on the PVC. JM’s PVC sheet also lists its white as passing California Title 24.
Color options overlap more than the old rule of thumb suggests. JM sells TPO in white, grey and tan and PVC in white, Grey ES and Sandstone ES. Carlisle offers Sure-Weld TPO in special colors beyond white, gray and tan, but limits 80-mil special colors to warranties of up to 20 years. Sika’s warranty selection guide allows up to 30 years on its Décor PVC in white, reflective gray and tan, but caps other Décor colors at 20 years.
Warranty Structure: What the Numbers Actually Mean
The manufacturer warranties on both systems come in tiers: material-only (the manufacturer replaces defective sheet, you pay labor), labor-and-material up to a dollar cap, and NDL (no-dollar-limit), with terms from 5 to 30 years in the table below. For commercial buildings, the NDL covers the cost that matters most, the labor to tear off and replace.
| Membrane (thickness) | Maximum guarantee term | Source |
|---|---|---|
| JM TPO 45 mil | 5, 10 or 15 years | JM data sheet RS-8632 |
| JM TPO 60 mil | 5, 10, 15 or 20 years | JM data sheet RS-8633 |
| JM TPO 80 mil | 5, 10, 15, 20, 25 or 30 years | JM data sheet, 80 mil |
| JM PVC FB 80 mil | Up to 30 years in most JM PVC systems | JM RS-8927 |
| Sarnafil G410 and S327, 60 mil | 5 to 20 years | Sika warranty selection guide |
| Sarnafil G410 and S327, 72 mil | Up to 25 years | Sika warranty selection guide |
| Sarnafil G410 and S327, 80 mil | Up to 30 years | Sika warranty selection guide |
| Sikaplan Universal, 60 mil | 5 to 20 years | Sika warranty selection guide |
| Carlisle Sure-Weld TPO, 80 mil special colors | Up to 20 years | Carlisle guide specification |
The pattern is the same at both makers: a 20-year term needs 60 mil, 25 years needs 72 or 80 mil, and 30 years needs 80 mil. A bid that promises a 30-year warranty on a 60-mil sheet does not match JM’s or Sika’s published terms, so ask for the manufacturer’s warranty confirmation before signing.
Manufacturer warranties require an authorized applicator and the manufacturer’s inspection. Carlisle’s guide specification says a Carlisle Field Service Representative inspects the finished roof “to determine whether a warranty shall be issued.” Skip that step and you are left with the contractor’s workmanship warranty, which lasts only as long as the contractor’s business. For the warranty deep-dive, see our commercial roof warranty guide.
The Sika Sarnafil Premium: Why Owners Pay It
Sika Sarnafil is the reference brand for premium PVC in the US, and Sika’s US lineup is PVC only: its roofing membranes page lists Sarnafil and Sikaplan “PVC membranes.” Sarnafil G410 is the adhered sheet and S327 the mechanically attached sheet, each in 60, 72 and 80 mil, with Décor as a special system. Sikaplan is Sika’s second PVC line, which that page positions as “standard industry performance at a cost-effective price.”
Searches for “Sarnafil TPO” usually mean one of two things. Outside the US, Sika does sell a polyolefin sheet: Sarnafil TS 77 is listed under FPO (flexible polyolefin, the TPO family) membranes on Sika Singapore and other non-US sites. In the US, a “Sarnafil” bid is a PVC bid, so compare it with PVC from Carlisle, JM or Elevate, not with TPO.
What the premium buys, by Sika’s own published documents: an 80 mil Sarnafil G410 sheet with 40 mil above the scrim (data sheet, November 2023), a thickness guarantee that pays the owner $0.05 per square foot, up to $5,000, for any Sarnafil sheet measuring under its labeled thickness per ASTM D751, the 30-year term on 80 mil, and the field history on its oldest-roofs page. HomeGuide does not price Sarnafil separately, so get a Sarnafil quote alongside a standard PVC quote on the same spec to see the actual premium. On a 30-year hold, the 80-mil term matches the hold; on a 10-year hold before a sale, a 60-mil sheet with a 20-year term already outlasts the owner.
Installation Reality: The Crew Matters More Than the Brand
Both TPO and PVC fail at the details first: a cold-welded seam, a penetration flashing sealed instead of welded, or insulation joints left unstaggered. Sika’s comparison sheet calls seams “a trouble area for water penetration,” which is why both makers expect a probe check on every seam. Carlisle’s Sure-Weld adhered system uses field sheets up to 16 ft wide, so wider sheets mean fewer seams to probe.
The single biggest predictor of long-term performance on either system is the crew. Carlisle’s specification refers to a Carlisle Authorized Roofing Applicator, and Sika’s G410 data sheet says Sika issues its warranty only after a Sika Authorized Applicator completes the roof to Sika requirements. On a commercial roof where you need the NDL warranty, that certification is a condition of the warranty, not a preference. The commercial roofing contractor guide walks the vetting process.
Punctures and Foot Traffic: Edge Case
Thickness is the lever for traffic and hail on either sheet. Carlisle’s Sure-Weld specification requires 80-mil TPO adhered to a cover board for 2-inch hail coverage, and Carlisle sells Sure-Weld TPO walkway rolls for service paths. On roofs with large rooftop HVAC plants or monthly telecom service visits, specify 80 mil and walkway pads in every traffic path, whichever membrane you pick.
Recyclability and Environmental
Sika says its membranes contain an average of 10 percent recycled vinyl content from pre- and post-consumer sources, certified by UL Environment, and that it found no formal program recycling TPO back into new membrane at end of life. That claim comes from a PVC maker’s comparison sheet, so ask any TPO bidder for its own take-back or recycled-content documentation.
PVC draws more scrutiny from green-building reviewers for its chlorine and plasticizer chemistry. If a LEED or ESG deliverable drives the project, ask each manufacturer for its Environmental Product Declaration (Sika lists EPDs on its US roofing site) and compare the documents rather than the marketing.
Mixed Decks: Sometimes You Spec Both
Some commercial buildings have both general roof area and chemically-exposed roof area. A typical example: a 30,000 square foot multi-tenant retail center where 6,000 square feet sits over a restaurant with rooftop kitchen exhaust. Specifying TPO on the 24,000 square feet of general area and PVC on the restaurant section, joined by a detailed transition, costs $6,000 to $12,000 more than all-TPO at HomeGuide’s $1 to $2 per square foot gap, against $30,000 to $60,000 for PVC on the whole roof.
TPO and PVC are different polymers, so the transition between the 24,000 and 6,000 square foot sections is a flashed detail at a curb, expansion joint or area divider that both manufacturers must approve in writing. The choice is driven by the owner’s hold period and the cost of reroofing the restaurant section early if TPO goes there. The flat roof repair cost guide has the repair economics in context for both systems.
What About EPDM as a Third Option
EPDM is the third single-ply option on most bids. It is a thermoset rubber made to ASTM D4637 (IBC 1507.12.2), glued or taped at seams rather than heat-welded, and black by default. HomeGuide prices it at $3.50 to $10 per square foot installed with a 15 to 25 year lifespan, the lowest entry price of the three. It suits northern-climate warehouses with no chemical exposure where reflectance is not required. For broader context, our TPO vs. EPDM roofing companion piece covers that specific match-up.
Decision Framework: Pick the System
| If the building or owner has | Specify | Why (source) |
|---|---|---|
| Grease, fat, oil or fuel on the roof (kitchen exhaust, food plant, refueling) | PVC, 60 mil minimum | JM PVC rated for oils, fuels and grease; Carlisle requires review for TPO in this exposure |
| Solvent or lab exhaust | PVC, after the maker confirms the named chemical | Resistance is chemical-specific; get it in writing |
| No chemical exposure, hold under 10 years | 45 or 60 mil TPO | JM TPO 45: up to 15 years; TPO 60: up to 20 years |
| No chemical exposure, hold of 10 to 20 years | 60 mil TPO with a 20-year NDL | JM RS-8633 caps 60 mil at 20 years |
| Hold of 25 to 30 years | 80 mil TPO or 80 mil PVC | JM TPO 80 and PVC FB 80, Sarnafil 80 mil: up to 30 years |
| Hail zone needing 2-inch hail coverage | 80 mil, adhered over cover board | Carlisle Sure-Weld guide specification |
| Roof visible from neighbors, color required | PVC Décor in white, gray or tan for 30 years; other colors cap at 20 | Sika warranty selection guide; Carlisle caps 80-mil special-color TPO at 20 |
| Northern climate, no reflectance requirement, lowest first cost | EPDM | HomeGuide: $3.50 to $10 per sq ft |
The Bottom Line
TPO is the lower-cost answer on most commercial flat roofs in 2026, at HomeGuide’s $4 to $10 per square foot. PVC earns its 20 to 25 percent premium when grease, oil, fuel or chemical exposure is real, or when the owner wants a reflective color on a visible roof. Either way, hire the manufacturer’s authorized applicator, match the sheet thickness to the warranty term you need (60 mil for 20 years, 80 mil for 30), and follow HomeGuide’s advice to sweep flat roofs and clear gutters every six months or after storms.
Frequently asked questions
What is the difference between TPO and PVC?
TPO is a polyethylene and polypropylene blend with no plasticizer, made to ASTM D6878. PVC contains plasticizer that gives it flexibility and resistance to oils, fuels and grease, and is made to ASTM D4434. Both are white by default, heat-weldable, and need at least 1/4 inch per foot of slope under IBC 1507.13.1.
Is PVC worth the extra cost over TPO?
HomeGuide prices PVC at $5 to $12 per square foot installed against $4 to $10 for TPO, a 20 to 25 percent premium. It is worth paying when the roof faces grease, oil, fuel or chemical exposure. On a 30,000 square foot dry-goods warehouse, the same premium is $30,000 to $60,000 for no added coverage.
Which lasts longer, TPO or PVC?
HomeGuide gives PVC a 20 to 30 year lifespan and TPO 10 to 25 years. At equal thickness the warranties match: JM’s 60-mil TPO and Sika’s 60-mil Sarnafil PVC both top out at 20 years, and 80-mil sheets from JM and Sika reach 30 years. Sika says it has numerous PVC roofs over 35 years old.
When must I use PVC instead of TPO?
Choose PVC, 60 mil or thicker, whenever grease, fat, oil or fuel will reach the membrane, such as under restaurant kitchen exhausts, on food plants, and near aircraft refueling. Johns Manville rates its PVC as resistant to oils, fuels and grease, while Carlisle requires manufacturer review before installing its TPO where grease, oil or animal fats will contact the sheet.
Are TPO and PVC both energy efficient?
Yes. In white, JM lists CRRC solar reflectance of 0.77 initial and 0.70 after three years for its TPO, and 0.86 initial and 0.70 aged for its PVC, which JM also lists as passing California Title 24. Darker colors reflect less, so check the aged value for the exact color you pick.
Does Sika Sarnafil make a TPO membrane?
Not in the US. Sika’s US roofing membranes, Sarnafil and Sikaplan, are both PVC. Outside the US, Sika sells Sarnafil TS 77, a flexible polyolefin (TPO family) membrane listed on Sika Singapore and other non-US sites. A US Sarnafil bid should be compared against other PVC bids.
Does the membrane or the installer matter more?
The installer matters more. Both TPO and PVC fail first at seams and penetrations, and both Carlisle and Sika issue their warranties only through an authorized applicator, with Carlisle inspecting the finished roof before it issues one. Ask for the applicator certificate and probe testing of every seam, on sheets that run up to 16 ft wide in Carlisle’s adhered system.