Single-Ply Commercial Roofing in Orlando, FL

TPO is the default specification for most Orlando commercial buildings without specific chemical exposure or unusual mechanical-traffic requirements. It is cost-effective per square installed, available in 60-mil and 80-mil thickness, carries 20-year NDL warranty coverage from every major manufacturer, reflects UV to reduce cooling loads in Florida's high-solar environment, and has a field performance record in Central Florida dating back to the mid-1990s. The International Drive hotel corridor, the Maitland office market, the Sanford and Lake Mary commercial strip, and the OIA industrial corridor are all predominantly TPO markets for new and replacement work.

EPDM is preferred for large-footprint buildings where minimizing seam count is a priority, for buildings where the owner values EPDM's long track record over TPO's shorter history, and for institutional and government buildings where conservative procurement standards favor established systems. The Turnpike and I-4 distribution warehouse inventory, UCF-affiliated institutional buildings, and county government buildings in Orange and Seminole counties are typical EPDM candidates. EPDM's elasticity gives it a specific advantage in hurricane-uplift conditions that we factor into the specification for high-exposure buildings.

PVC is the mandatory specification for buildings with grease or chemical exhaust exposure — restaurant buildings, food processing facilities, medical sterilization buildings, and industrial chemical environments. On International Drive, any building with commercial kitchen exhaust discharging onto or near the roof membrane should be evaluated for PVC over the exhaust zone. The premium over TPO is justified by the alternative failure mode on chemically exposed membrane. For buildings where chemical resistance is not a factor, PVC's higher cost without a specific performance benefit does not justify the specification.

Every single-ply installation in Florida must be designed to the building's FBC wind-uplift pressures, which are determined by building height, exposure category, and roof zone (field, perimeter, corner). Orlando is in FBC Wind Zone II. The design pressures for a typical 30-foot commercial building in Orange County, Exposure Category C, run from approximately - fastener pattern density for mechanically attached systems and adhesive coverage rate for fully adhered systems.

We use FM Global design documentation for every warranted single-ply installation — the FM wind-uplift approval confirms that the fastener pattern, insulation type, and membrane combination achieves the required uplift resistance for the building's design pressures. The FM approval number is included in the permit application and in the manufacturer warranty documentation at closeout. Orange County Building Division, the City of Orlando Building Division, and the City of Winter Park each require this documentation at permit application — we manage the submission.

Sandy subsoil and karst geology under much of Orange County means that decks shift over time. Metal deck on older buildings develops wavy surfaces that affect insulation contact and fastener engagement. On any roof replacement where we see evidence of deck irregularity, we include a deck inspection step before specifying the fastener pattern — because a fastener pattern designed for a flat deck is not the same as a pattern designed for a deck with 3/8-inch surface variation across a panel.

The recover decision — installing new single-ply over the existing system versus tear-off and full replacement — is determined by two factors: the moisture condition of the existing insulation and the remaining system count on the building under FBC (maximum two roofing systems on a structure before full tear-off is required).

Moisture cores: We pull moisture cores in a minimum of five locations, weighted toward areas with documented leak history, roof zones with poor drainage, and areas downhill from roof equipment. In Florida's high-rainfall environment, insulation saturation is the norm on older roofs with drainage problems — not the exception. Core readings above 0.5% moisture content by weight disqualify the wet zone from recover. If more than 25% of the cores return wet, we recommend full tear-off rather than partial recover, because a partial recover with wet zones left in place accelerates deck corrosion and voids the new warranty.

Recover path compatibility: TPO over existing EPDM requires a separation layer. EPDM over existing TPO requires the manufacturer's specific approval because of chemical compatibility questions. PVC over EPDM requires a separation layer. We assess the compatibility of every proposed recover combination before scoping the project and document the compatibility basis in the written scope.

TPO is by far the most-installed single-ply membrane on new and replacement work across the Orlando metro. It dominates the hospitality, office, retail, and industrial markets. EPDM holds a significant share of the large-footprint warehouse and institutional market. PVC is specified where chemical resistance is a requirement — primarily restaurant, food service, and chemical-exposure industrial buildings.

Yes, when it is designed and installed to FBC wind-uplift requirements. Single-ply systems installed to FM Global-approved fastener patterns and FBC-compliant edge metal have a strong post-hurricane track record in Central Florida. The failures we document after hurricane events are almost always at the perimeter and edge-metal details, not in properly fastened field zones. FBC compliance at the perimeter and corner zones is where the specification discipline matters most.

The manufacturer selection for a warranted single-ply installation depends on warranty terms, Florida Product Approval for the specific installation method and design pressure, manufacturer field-representative coverage in the Orlando area, and compatibility with any existing system if this is a recover. We present the manufacturer options for your building in writing, with the warranty terms, product approval numbers, and the basis for our recommendation. The decision is yours — we provide the facts.

A 60-mil TPO or PVC system with semi-annual maintenance reaches 20-25 years in Central Florida conditions. A 60-mil EPDM system in good drainage conditions reaches 25-30 years. These are not guarantees — they are the field performance range we observe on well-maintained systems in our service area. Deferred maintenance shortens these ranges significantly in Florida's climate: missed drain-clearing cycles, unaddressed flashing failures, and lapses in manufacturer warranty maintenance all accelerate degradation.

We will pull moisture cores, assess the recover-versus-replace question, pull the FBC exposure category, and write a scope with the right membrane specification, manufacturer warranty path, and installed-cost band — before any material commitment.