Choose PVC when grease, oils or chemicals reach your roof. It is a welded thermoplastic membrane formulated to hold up where other single-ply sheets soften or break down. Restaurants, food plants, laboratories and manufacturing buildings with exhaust or process discharge are the typical fit. If nothing harsh reaches the roof, TPO usually gives similar welded seams for less.
Strong Contractors installs, replaces, repairs and recovers PVC roofing systems for commercial, industrial and high-demand facilities. PVC is a reinforced single-ply membrane with heat-welded seams and strong resistance to grease, oils, chemicals and other rooftop contaminants. It is commonly selected where chemical resistance, sanitation and durable seam performance are important.
Common Applications:
PVC is often selected where grease, oils or certain chemical exposures place additional demands on the roof. Strong evaluates those conditions alongside the substrate, attachment method, drainage and system compatibility before coordinating the complete assembly.
On a PVC roof, exposure drives the details. The work starts with how the building operates, not with the membrane.
| Spec | Typical Value |
|---|---|
| Membrane | Reinforced polyvinyl chloride (PVC), single ply |
| Seams | Hot-air welded |
| Resistance | Grease, oils and many chemicals; confirmed against manufacturer data |
| Thickness | Typical: 50 to 80 mil |
| Attachment | Mechanically attached or fully adhered |
| Compatibility | Does not weld to TPO; transitions need a dedicated detail |
| Warranty | No Dollar Limit (NDL) manufacturer warranties, typically 10 to 20 years depending on the system |
| Manufacturer partners | Elevate, GenFlex, RPI and GAF |
PVC typically costs more than TPO, so the first question is whether the exposure calls for it. After that, these factors shape the price.
Some roofs need a membrane formulation rated for specific oils or chemicals, which can carry a higher material cost.
Containment, sacrificial walkway pads and added detailing at exhaust fans add material and labor where discharge is heavy.
Kitchens, food lines and labs often limit work hours, noise, odors and roof access, which can stretch the schedule.
Tear-off versus recover, and tie-ins to adjacent roofs of a different material, change the scope.
Longer manufacturer warranties raise thickness and inspection requirements.
| PVC Roofing Systems | TPO Roofing Systems | EPDM Roofing | ||
|---|---|---|---|---|
| Grease and oil resistance | High | Moderate; varies by formulation | Low; oils swell rubber | |
| Seams | Hot-air welded | Hot-air welded | Primer and seam tape | |
| Typical surface | White or light | White | Black | |
| Relative material cost | Higher | Moderate | Moderate | |
| Sanitation-sensitive roofs | Common choice | Where exposure is light | Rarely chosen | |
| Typical fit | Kitchens, food plants, labs | General commercial and industrial | Large, simple, cold-climate roofs | |
Not always, but a restaurant with exhaust fans on the roof is the classic case for PVC. Grease vented from kitchen hoods settles on the membrane and can soften or break down many roofing materials over time. PVC holds up to that exposure, and containment at the fans keeps most grease off the roof field.
Both are reinforced thermoplastic membranes with hot-air welded seams and a light surface. PVC is formulated for stronger resistance to grease, oils and many chemicals, and it usually costs more. TPO is the common choice when nothing harsh reaches the roof, so choose based on what reaches your roof.
No. PVC and TPO are different polymers and do not form a reliable weld. Where a new PVC area meets an existing TPO roof, the transition needs its own detail, typically a separation at a curb, edge or expansion joint, built the way both manufacturers specify.
No membrane resists everything. PVC handles grease, oils and many chemicals, but some solvents and process discharges can still attack it. We compare what your building actually vents against the manufacturer’s compatibility data before choosing the membrane grade, and add protection where the data says it is needed.
PVC membranes resist fire and do not readily support burning, but fire ratings are assigned to the complete tested roof assembly: deck, insulation, cover board and membrane together. The assembly is built to the rating your building code and insurer require, not chosen on the membrane alone.
Yes. PVC is commonly used under vegetated roofs and rooftop gardens. The full assembly matters: protection layers, drainage and any root barrier follow the manufacturer’s vegetated-roof requirements so the membrane underneath stays protected and can still be serviced. Those requirements belong in the garden design from the start.
Empty or replace grease containment on schedule, clean residue from the membrane around the fans, and keep drains clear so runoff does not pond. Inspect seams and flashings near the fans more often than the rest of the roof, since that is where wear shows first.
