PVC Roofing — Installation and Warranty in Orlando, FL

International Drive's density of restaurant and food-service buildings makes it one of the highest concentrations of grease-exposure roofing problems in the Southeast. A hotel kitchen exhausting cooking fumes through a rooftop vent, a quick-service restaurant with a grease trap on the roof, or a convention center catering kitchen with multiple exhaust points all produce grease contamination on the surrounding membrane. We have documented TPO and EPDM roofs on I-Drive buildings where the membrane within a 20-foot radius of every exhaust vent has been degraded to the point of seam failure within 7 years of installation.

PVC does not degrade in grease contact. Its vinyl chemistry is inherently resistant to the fats, oils, and esters in cooking exhaust. For a restaurant building on Sand Lake Road or a hotel kitchen building in the Disney Springs area, specifying PVC over the kitchen zone — even if the balance of the roof uses TPO — is a defensible scope decision that avoids a predictable failure mode.

We also specify lead-free PVC from manufacturers with documented environmental compliance — Sika Sarnafil, Versico, and Johns Manville all produce lead-free PVC formulations. For Lake Nona Medical City buildings and UCF Health-affiliated facilities with environmental compliance standards, lead-free product documentation is part of our closeout package.

PVC is installed mechanically attached or fully adhered, using the same FBC wind-uplift design approach we use for TPO. The membrane's weld quality is the most installation-sensitive element — PVC welds require correct air temperature, correct airflow, and the right overlap width. We do not install PVC in ambient temperatures below 40°F — not a common constraint in Orlando, but relevant in the winter months when cold fronts can push overnight temperatures below 50°F. Morning production startup is delayed until the membrane surface temperature is within the manufacturer's installation range.

PVC seam welds are destructive-tested and non-destructive-tested on every installation. We cut test welds at the start of each welder's shift to verify the seam is fusing correctly under current conditions, and we probe-test production seams with a 5-lb test wheel across every completed section. Failed welds are cut out and rewelded — we do not cover a failed weld with a cap strip and call it done.

FBC Florida Product Approval for PVC systems is required for every installation in Florida. Every PVC manufacturer we install has current Florida Product Approvals covering their membrane and insulation combinations. We submit the product approval numbers as part of the permit application on every PVC installation and confirm that the approval covers the installation method and design pressure on the specific building.

Medical and laboratory buildings in the Lake Nona Medical City campus include facilities with chemical sterilization systems, autoclave exhaust, and laboratory ventilation that discharges oxidizing chemicals onto or near the roofing membrane. Chlorine, hydrogen peroxide, and ozone compounds used in medical sterilization are particularly hard on EPDM and can degrade TPO. PVC is more resistant to oxidizing chemical exposure than either alternative, though we review the specific chemical profile of each facility's exhaust before specifying any membrane.

We coordinate with the facility's mechanical engineer and the HVAC contractor on any building where rooftop chemical discharge is a factor. The membrane specification and the exhaust termination details — height above roof, direction of discharge, proximity to parapet — should be coordinated, not designed independently. We have had the conversation with AdventHealth and UCF Health facility engineering teams where we identified that the planned exhaust termination detail would discharge directly onto the membrane and recommended a code-compliant modification to the discharge direction before the new HVAC system was installed.

OIA-adjacent industrial buildings in Orange County and the Florida Turnpike industrial corridor represent the other major PVC market in our service area. Facilities with petroleum product storage, chemical processing, and solvent-bearing exhaust are situations where the membrane chemistry decision has material life-cycle implications. We assess the chemical exposure profile before specifying any membrane on these buildings.

Yes, typically 10-20% more per square installed. The premium reflects the higher material cost of PVC formulation and the additional installation discipline required. For buildings where grease or chemical resistance is a functional requirement — restaurant buildings, lab buildings, industrial facilities with process chemical exhaust — the premium is justified by the alternative: a TPO or EPDM system that fails at the exhaust zone within 7-10 years and requires patching or replacement of the affected area.

PVC cannot be installed in direct contact with EPDM — chemical incompatibility causes plasticizer migration and membrane degradation. A separation layer (polyester fleece or cover board) is required between EPDM and PVC. PVC over existing TPO is generally compatible, but we assess the existing substrate and insulation condition before recommending any recover path.

PVC's hot-air weld produces a seam strength that is among the highest in single-ply roofing. The fusion bond in a properly executed PVC weld is as strong as the field membrane — the seam is not a failure point under wind uplift the way an adhesive lap can be. Mechanically attached PVC systems are designed to FBC wind-uplift requirements for the building's zone pressures, using the same FM Global design documentation we use for TPO and EPDM.

We install PVC systems from Sika Sarnafil, Versico, and Johns Manville under warranted-contractor programs. All three carry Florida Product Approvals for their PVC systems. The right manufacturer for your building depends on warranty terms, specific chemical resistance requirements, and your capital horizon. We recommend based on those criteria after reviewing your building's specific conditions.

Tell us about your building's exhaust and chemical exposure. We will assess whether PVC is the right specification or whether a different approach addresses your specific conditions — in writing, before any scope is committed.