Services · TPO Commercial Roofing
TPO Commercial Roofing & Single-Ply Membrane in San Diego
California First Roofing is a factory-certified installer of TPO, PVC, and single-ply membrane systems for commercial, retail, industrial, and multi-family properties across San Diego County. Heat-welded seams, mechanically fastened or fully adhered, with manufacturer warranties up to 30 years.
GAF EverGuard, Carlisle, Firestone, Johns Manville, and Versico certified
45, 60, and 80 mil TPO for every commercial application
Heat-welded seams tested for strength on every project
Mechanically fastened, fully adhered, or ballasted systems
Cool-roof rated — Title 24 compliant and ENERGY STAR qualified
20–30 year manufacturer warranties available
About Our TPO Commercial Roofing Service
TPO (Thermoplastic Polyolefin) is the fastest-growing commercial roofing system in North America — and for good reason. Its heat-welded seams create a monolithic waterproof membrane, its bright-white surface reflects heat and reduces cooling costs by up to 25%, and its lifecycle typically runs 20–30 years with proper installation. We install TPO for property managers, HOAs, retail centers, industrial buildings, and multi-family properties across San Diego.
Best For
Commercial buildings, retail centers, industrial warehouses, HOA-managed multifamily, apartment complexes over 150 units, and any flat or low-slope commercial roof.
Our Process
Commercial projects start with a full moisture survey (infrared or capacitance depending on scale), core cuts to verify existing assembly, and a formal specification package. We coordinate with property managers on staging, tenant notifications, and after-hours work when required.
Warranty
Manufacturer warranties from 15 to 30 years depending on membrane thickness and system class, plus our workmanship warranty.
TPO Commercial Roofing Guides from Our Roofers
- Commercial · 9 min readTPO Roofing for San Diego Commercial Buildings: The Complete GuideWhy TPO dominates flat-roof commercial work in Southern California — energy performance, warranty realities, thickness grades, and what to look for in a TPO installer.Read the guide
- Commercial · 8 min readTPO Commercial Roofing in Escondido: The Flat-Roof GuideTPO installation, warranties, and costs for Escondido commercial buildings — mil thickness, energy performance, and installer requirements in 2026.Read the guide
- Rebates · 7 min readCalifornia Cool-Roof Rebates & Title 24 Explained (2026)How Title 24 compliance and California utility rebates can offset thousands on a new roof — what qualifies as a cool roof, how much you get back, and how to claim it in San Diego.Read the guide
- Materials · 11 min readBest Roofing Materials for San Diego Homes (2026)Shingle vs tile vs standing-seam metal vs TPO for San Diego — how each material handles coastal salt air, relentless UV and Santa Ana winds, with 2026 installed pricing.Read the guide
Storm, Wind & Hail Damage to TPO Commercial Roofing
Storm season is when tpo commercial roofing problems show up first. If wind, rain, or hail hit your San Diego roof, start here:
- Storm Damage Roof Repair in San DiegoAtmospheric-river leaks, lifted underlayment, and insurance-claim documentation handled end to end.See storm repair options
- Wind Damage Roof Repair in San DiegoSanta Ana wind events, broken seal strips, displaced tile, and torn ridge caps repaired fast.See storm repair options
- Hail Damage Roof Repair in San DiegoBruised shingles, fractured tile, and dented metal documented for adjusters with photo evidence.See storm repair options
Price Match Promise
Got a competing roofing bid in San Diego County? We'll beat it.
Upload any written quote from a licensed C-39 roofing contractor with 3+ years in business — we verify the license with the CSLB and come back with a lower fixed price on the same scope.
Frequently Asked Questions
How long does a TPO roof last?
Properly installed 60 mil TPO typically lasts 20–25 years; 80 mil systems can exceed 30 years. Longevity depends heavily on installation quality — heat-weld temperatures, seam pressure, and detailing at penetrations and drains.
Is TPO better than PVC?
Both are excellent single-ply systems. TPO is more cost-effective and slightly more flexible; PVC has better chemical resistance and is preferred for restaurants and buildings with grease exhaust. We install both and recommend based on your application.
Do you handle large commercial roofing projects?
Yes — we regularly handle commercial and multi-family projects of 150+ units, including phased tenant-occupied re-roofs, after-hours work, and full property-manager coordination. See our commercial page for details.
How much does TPO commercial roofing cost per square foot in San Diego?
Installed TPO in San Diego typically runs $7–$14 per square foot for 60-mil mechanically fastened systems and $10–$18 per square foot for 80-mil fully adhered systems with tapered ISO insulation.
Can TPO be installed over an existing roof?
In many cases yes — a TPO recover over an existing single-ply or built-up roof is possible if the substrate is dry, structurally sound, and passes a moisture survey. A recover saves tear-off cost and building disruption when it qualifies.
Is TPO Title 24 and cool-roof compliant?
Yes. White TPO membranes meet California Title 24 cool-roof requirements, are ENERGY STAR listed, and typically qualify for CRRC-rated cool-roof credits in San Diego commercial permits.
How do you find leaks on a TPO roof?
We perform infrared moisture surveys and electrical leak-detection (low-voltage or high-voltage) to pinpoint saturated insulation and seam breaches without cutting the entire roof. Repairs are then made with heat-welded patches to match the original membrane.
What warranty comes with a TPO installation?
Manufacturer warranties from GAF, Carlisle, Firestone, Johns Manville, and Versico range from 15 to 30 years — including no-dollar-limit (NDL) options — plus our own workmanship warranty on seams and details.
Do you re-roof apartment complexes and HOA properties?
Yes. We handle HOA and multi-family TPO re-roofs across San Diego County with tenant notifications, staged unit access, dumpster and material staging plans, and evening/weekend scheduling when required.
Get a Free TPO Commercial Roofing Estimate
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