PVC Roofing in Chicago for Grease, Chemical, and Fire Exposure

Metalmaster Roofmaster installs commercial PVC roofing systems across Chicago and the surrounding suburbs. PVC is the specified membrane for buildings with grease-laden exhaust, chemical exposure, or fire-resistance requirements: restaurants, food manufacturing, commercial kitchens, and chemical-processing facilities. We install Duro-Last prefabricated PVC as our primary system, with Versico VersiFlex KEE PVC as an alternative. We have served Chicagoland since 1977.

Why PVC is the right membrane for grease and chemical environments

Every commercial roofing membrane eventually meets grease. For most building types, it is incidental contact. For restaurants, food-processing plants, and facilities with chemical-exhaust fans, it is continuous. Animal fats and cooking oils that land on a TPO or EPDM surface break down the membrane chemistry over years, softening and degrading the material at the contact points. PVC is formulated to resist that exposure, along with a wide range of industrial chemicals and the UV that accelerates damage on conventional membranes.

Fire resistance is a second driver. PVC membranes carry fire-rated classification in most assemblies, meeting the requirements for buildings where fire codes specify membrane performance.

What makes PVC different from other single-ply membranes

• Chemical and grease resistance. PVC holds up to animal fats, oils, and a broad range of industrial chemicals. TPO and EPDM are not formulated for sustained grease contact, and the degradation shows over time.
• Hot-air-welded seams. Heat welding fuses the membrane edges into a single continuous surface. Those seams are stronger than the membrane itself and do not rely on adhesives or tapes that can delaminate.
• Solar reflectivity. White PVC reflects a large portion of solar radiation, lowering rooftop temperatures and the cooling load on building HVAC. Energy Star rated.
• Fire resistance. PVC assemblies meet fire-rated classification requirements across a wide range of occupancy types.
• Dimensional stability. Polyester or fiberglass scrim reinforcement limits thermal movement and keeps the membrane flat through Chicago temperature swings.

Duro-Last: factory-fabricated PVC

Metalmaster Roofmaster’s primary PVC system is Duro-Last. Most PVC installations involve crews field-welding large membrane panels on the roof under whatever conditions the day presents. Duro-Last takes a different approach: the membrane is fabricated at the factory to the exact dimensions of each building. Up to 80 to 85 percent of the seams are welded in a controlled factory environment before the system ships to the job site.

Factory seam welding is done under consistent temperature, humidity, and quality-control conditions that a rooftop crew cannot replicate in a Chicago summer or fall. When the membrane arrives on your roof, it is already a custom-fit sheet. The crew installs it, welds the remaining field seams, and terminates the perimeter. Field seams are the most common points of long-term failure in any single-ply system, and Duro-Last cuts their number substantially.

Duro-Last systems are designed for both new construction and recover (overlay) applications. In many cases, a recover over dry existing insulation eliminates a full tear-off without compromising the warranty or long-term performance.

Duro-Last warranty

Duro-Last offers no-dollar-limit warranty coverage through its credentialed contractor network. The warranty covers the roofing assembly, not just the membrane, meaning a covered failure does not leave you negotiating over what qualifies. Coverage is available when a Duro-Last authorized contractor installs the system.

Versico VersiFlex KEE PVC: the alternative system

For projects where a field-fabricated PVC system is preferred, Metalmaster Roofmaster also installs Versico VersiFlex, a KEE (ketone ethylene ester) PVC membrane. Standard PVC formulations use plasticizers to maintain flexibility; those plasticizers can migrate out of the membrane over time, making it stiffer and more prone to cracking at the end of its service life. KEE formulations replace those plasticizers with a non-migrating polymer, maintaining flexibility through the full warranty period. VersiFlex is hot-air-welded, chemically resistant to the same grease and oil exposures as standard PVC, and backed by Versico Total System warranty coverage through our Versico Gold Medal / King’s Court applicator status.

In most cases, Duro-Last prefabricated PVC is our first recommendation. We will tell you when VersiFlex is a better fit for your building.

Buildings PVC is specified for

PVC is the right membrane when the building’s use drives a higher chemical-resistance requirement than TPO or EPDM can meet over a full warranty term. Common examples:

• Restaurants and fast-food franchises. Exhaust fan discharge from cooking equipment lands on the roof surface every day of operation. PVC is the membrane that franchisors and their roofing consultants specify for good reason.
• Food manufacturing and processing plants. Similar grease and vapor loads, often at higher concentrations and across a larger roof area.
• Commercial kitchens and institutional food service. Schools, hospitals, and corporate campuses with commercial kitchen operations on the building footprint.
• Chemical manufacturing and warehousing. Buildings where industrial processing exhaust or accidental contact reaches the roof surface.
• Dry-cleaning and laundry facilities. Cleaning agents and process vapors that break down non-PVC membranes.
• Any building where fire-rated roofing assemblies are specified. PVC meets fire-rated assembly requirements in a wide range of occupancy classifications.

Our PVC installation

Metalmaster Roofmaster fabricates flashings, edge metal, and custom sheet metal components in our own 40,000 sq ft fabrication shop, part of our 100,000 sq ft McHenry, IL facility. On a PVC roof, the membrane is only part of the system. The flashings at penetrations, curbs, walls, and drains are where most failures originate, and fabricating them in-house means they are cut to the actual field dimensions of your roof, not adapted from a catalogue profile. Our PVC installations are completed by union crews, all OSHA 10 and 30 trained, under the oversight of a full-time safety director.

We handle new construction, full tear-off and replacement, and Duro-Last recover applications. Every project includes a site assessment and a fixed quote before work begins.

Why Metalmaster Roofmaster

• In business since 1977. 49 years of commercial roofing in Chicagoland, with a project history across Illinois and the region.
• 0.66 EMR. Our Experience Modification Rate means clients pay 66 cents on the dollar on workers’ comp compared to the industry average. It is a published safety record, not a claim.
• In-house fabrication. 40,000 sq ft of fabrication within a 100,000 sq ft McHenry facility. Flashings, edge metal, and custom sheet metal are cut and formed to your roof’s actual dimensions, not catalog profiles.
• OSHA 10 and 30 trained crews. Every crew member, every job, with a full-time safety director on staff.
• Top 100 U.S. Roofing Contractor. Nationally ranked, focused on the Chicagoland market.
• Union labor. Trained, accountable, and covered.
• Versico Gold Medal / King’s Court applicator. Our Versico credential status qualifies VersiFlex KEE PVC projects for the Versico Total System warranty with the Plus V extension: no-dollar-limit, full-system coverage, transferable at building sale.

Frequently asked questions

What makes PVC roofing better than TPO or EPDM for a restaurant or food-processing facility?

PVC membranes resist animal fats, grease, and cooking oils that degrade TPO and EPDM over time. Exhaust fans and grease-laden air from commercial kitchens discharge onto the roof surface daily. PVC holds up to that exposure where other membranes soften, swell, or crack at the contact points. For any building with a food-service footprint, PVC is the standard specified membrane.

What is Duro-Last and why does Metalmaster Roofmaster install it?

Duro-Last is a PVC membrane system manufactured with most of its seams welded at the factory rather than on the roof. The membrane is fabricated to the exact dimensions of each building, so the installation crew works with a custom-fit sheet. Factory-controlled seam quality is more consistent than field welding, and fewer field seams means fewer long-term failure points. Duro-Last carries no-dollar-limit warranty coverage through its credentialed contractor network.

How long does a PVC roof last?

A properly installed PVC roof typically lasts 20 to 30 years. Duro-Last systems are built for long-term performance and are backed by manufacturer warranties covering the full roofing assembly. Service life depends on membrane thickness, attachment method, roof traffic, and maintenance schedule.

Is PVC roofing Energy Star rated?

White PVC membranes meet Energy Star reflectivity requirements. The reflective surface lowers rooftop temperatures, reduces summer cooling load on your HVAC system, and can support LEED credits for projects pursuing green building certification.

Can you install PVC over an existing roof?

In many cases, yes. A recover eliminates tear-off cost and the disruption of a full replacement when the existing insulation is dry and the deck is in sound condition. Duro-Last systems are engineered for recover applications. We assess the existing system before recommending recover versus full replacement, and we give you a straight number either way.

What is the difference between PVC and KEE PVC?

Standard PVC membranes use plasticizers to maintain flexibility. Over time, those plasticizers can migrate out of the membrane, making it more brittle toward the end of its service life. KEE (ketone ethylene ester) PVC membranes use a non-migrating polymer in place of conventional plasticizers, maintaining flexibility through the full warranty period without that degradation. Versico VersiFlex, one of the systems we install, is a KEE formulation. Both types are hot-air-welded and chemically resistant. We recommend the right product based on your building’s exposure and budget. For more on our complete single-ply offering, see our TPO roofing page and EPDM roofing page.

Metalmaster Roofmaster, 4800 Metalmaster Way, McHenry, IL 60050. Call 815-459-6415.