45 mil & 60 mil Membrane • Heat-Welded Seams • Commercial & Residential • Energy-Efficient Cool Roof
TPO (thermoplastic polyolefin) is the most widely installed commercial roofing membrane in the United States, and for good reason: white TPO reflects up to 80% of solar radiation, significantly reducing cooling loads on Jacksonville buildings. It installs efficiently with heat-welded seams that create a monolithic, waterproof surface when done correctly. JK Prestige Constructor Corp is approved to install Carlisle SynTec, Firestone, and GAF commercial TPO systems. We specify 60 mil membrane on all commercial projects — the 45 mil minimum is appropriate for low-traffic areas only. Seam welding is performed with calibrated hot-air welding equipment; we do not use adhesive-lap seam methods on new installations. Every TPO project includes a documented drainage plan to prevent ponding water, which is the leading cause of premature TPO membrane failure. Free inspection and written quote for all flat roof projects.
New installation, re-roofing over existing membrane, and precision seam repair — using proper hot-air welding equipment.
Seam quality is everything in TPO: A properly heat-welded TPO seam is stronger than the membrane itself. Poorly welded seams are the single most common cause of TPO roof failure in Florida. We weld at the correct temperature (900–1,000°F) with calibrated equipment, test seam integrity with a probe tool, and never allow adhesive-lap seams on new commercial installations.
60 mil Carlisle SynTec, Firestone, or GAF EverGuard TPO. Mechanically attached or fully adhered based on building structure. Heat-welded seams with documented welding parameters. Florida NOA approved installation methods.
New TPO membrane installed over structurally sound existing insulation board where Florida Building Code permits. Avoids tear-off cost where the existing system is a sound substrate. Core cuts taken to verify no subsurface moisture before recover approval.
Failed seam sections re-welded with hot-air welder. Parapet wall flashing replacement with pre-formed TPO corners. HVAC curb flashing repair. Drain collar replacement. Proper TPO materials throughout — no lap caulk.
Ponding water analysis with drainage improvement plan. Tapered polyiso insulation board to create positive slope to drains. New drain installation and drain enlargement. Ponding water correction is critical for TPO longevity.
Existing system evaluation, drain location mapping, slope analysis. Written recommendation for new system, recover, or repair. Core cuts on existing systems to check for subsurface moisture.
Full tear-off to deck or substrate preparation for recover. Deck inspection and repair. Tapered insulation board installed to establish proper drainage slope where needed.
Polyiso or EPS insulation board mechanically fastened per wind uplift requirements. Seams staggered. R-value specified per Florida Energy Code requirements for commercial buildings.
TPO panels rolled out and positioned. Seams heat-welded at 900–1,000°F. All welds probed for integrity. Flashings, corners, and penetrations detailed with pre-formed TPO accessories.
Water test at critical areas. Manufacturer warranty (typically 15–20 years on 60 mil systems) registered to building owner. Florida NOA compliance documentation provided for permit closeout.
TPO (thermoplastic polyolefin) is a single-ply membrane used on flat and low-slope roofs. It is the most commonly installed commercial roofing membrane in the US. White TPO provides excellent solar reflectance, reducing cooling loads significantly in Florida's climate — a major advantage in Jacksonville's summer heat.
We recommend 60 mil TPO for commercial applications in Northeast Florida. 45 mil is the minimum and appropriate for lower-traffic areas, but 60 mil provides significantly better puncture resistance and seam durability. For high-traffic rooftop areas near HVAC equipment, 80 mil is available and worth the premium.
TPO seams are heat-welded at 900–1,000°F, fusing overlapping membrane edges into a bond stronger than the membrane itself. Seams that are glued instead of welded are inferior and not acceptable on new installations. Seam integrity is the single most important quality indicator for any TPO installation.
A properly installed 60 mil TPO roof with heat-welded seams typically lasts 20–30 years in Florida. White TPO reflects UV rather than absorbing it, extending membrane life. Ponding water is the main lifespan reducer — proper drainage design is critical.
TPO is generally better for Florida due to its white surface and superior UV reflectance, which reduces cooling loads. Traditional EPDM is black, absorbs more heat, and uses different seaming adhesives that degrade faster in extreme heat. For most Jacksonville commercial projects, 60 mil TPO is our recommendation.
Commercial and residential flat roof installation. Free inspection, written scope, no pressure.
(904) 944-0278