TPO Roofing in Fairfield, CA
Heat-welded thermoplastic single-ply membrane. The default choice for Solano County warehouse and distribution roofs, and the easiest path to Title 24 cool roof compliance.
If you are specifying TPO roofing in Fairfield, you are looking at the system that has become the default for low-slope commercial roofs in California, and for good reasons that are worth understanding rather than assuming. TPO is a thermoplastic polyolefin membrane whose seams are heat-welded rather than glued, which produces a seam stronger than the sheet itself when it is welded correctly.
The white surface is the other half of the story. A standard TPO membrane arrives with the solar reflectance needed to satisfy California's nonresidential low-slope cool roof requirement without any additional coating, which removes a whole compliance headache on a Fairfield re-roof.
What is included in TPO roofing
Membrane thickness specification
45, 60 or 80 mil. Thicker membrane costs more per square foot and buys puncture resistance and, usually, a longer warranty term. On a roof with regular HVAC service traffic, 60 mil is the sensible floor.
Attachment method
Mechanically attached, fully adhered or induction welded, selected around wind exposure and deck type rather than by default.
Cover board and insulation
Polyiso insulation to the required assembly U-factor with a cover board where puncture resistance or fire rating requires it.
Heat-welded seams and details
Robotic welding in the field, hand welding at details, with probe testing of the seams before signoff.
Prefabricated and field-fabricated flashings
Curbs, pipe penetrations, drains and corners detailed in matching TPO so the whole assembly stays one compatible system.
CRRC documentation and warranty
Cool Roof Rating Council certificate for the installed product plus manufacturer warranty registration.
Signs your building needs this
- You are re-roofing a warehouse, distribution or light industrial building with a large uninterrupted roof field
- Title 24 cool roof compliance is required and you would rather not add a separate coating step
- Summer cooling load on the building is a meaningful operating cost
- The existing roof is a dark membrane that runs hot and is cooking the insulation beneath it
- You want a heat-welded seam rather than an adhesive seam that degrades with age
- The building has a rooftop solar array planned, where a reflective surface helps panel efficiency
Our TPO process
Survey
Deck type, existing assembly, wind exposure and rooftop equipment inventory.
Specification
Membrane thickness, attachment method, insulation R-value and warranty tier written into the scope.
Substrate prep
Tear-off or recover, deck repair, insulation and cover board installed to the manufacturer's assembly.
Membrane and welding
Field sheets laid and robotically welded, details hand welded, every seam probe tested.
Inspection and warranty
Manufacturer field inspection, then warranty registration and CRRC documentation to you.
Your options compared
| Thickness | Typical warranty range | Puncture resistance | Best suited to |
|---|---|---|---|
| 45 mil | 10 to 15 years | Baseline | Low traffic roofs, budget-constrained projects, short holding periods |
| 60 mil | 15 to 20 years | Substantially improved | The general purpose choice for warehouse and retail roofs |
| 80 mil | 20 to 30 years | Highest | Roofs with heavy service traffic, dense rooftop equipment, long hold periods |
TPO membrane thickness and what each gives you. Cost and service life figures are published industry ranges, not quotes for your building.
What TPO roofing costs in Fairfield
Published 2026 pricing puts complete TPO roof installation in the range of $6.50 to $11.50 per square foot. Where a specific project lands inside that band is driven far more by the details than by the membrane itself.
The variables that move TPO pricing:
- Membrane thickness. The jump from 45 mil to 80 mil is a real material cost difference and a real warranty difference.
- Attachment method. Fully adhered costs more than mechanically attached, and performs better under sustained wind uplift.
- Insulation thickness. Title 24 assembly U-factor requirements often drive more polyiso than the old roof had.
- Cover board. Adds cost, adds puncture resistance and fire rating. Worth it on roofs with regular equipment service traffic.
- Detail density. Every curb, pipe, drain and skylight is hand-detailed labour rather than machine-welded field sheet.
- Tear-off versus recover. The same decision that drives any commercial re-roof cost.
Local conditions that change this job in Fairfield
TPO makes particular sense on Fairfield industrial roofs for two local reasons. The first is the long hot dry season: with essentially no rain from May to October and summer highs routinely in the upper 80s and into the 90s, a reflective white membrane meaningfully reduces the heat load hitting the roof assembly and the conditioned space beneath it. The second is wind. The Delta breeze pushing through the Suisun Bay and Collinsville gap means sustained afternoon wind on the exposed roof fields of the Cordelia and Highway 12 corridors, and that pushes the attachment specification. On those buildings we usually recommend fully adhered or an enhanced fastening pattern rather than a standard mechanically attached layout, because wind uplift at membrane edges and corners is the failure mode that actually shows up here.
Why Fairfield building owners choose us for this work
0.63
Compliance out of the roll
California's 2025 Energy Code requires an aged solar reflectance of 0.63, thermal emittance of 0.75 and SRI of 75 on nonresidential low-slope roofs, in all 16 climate zones. Standard white TPO products carry Cool Roof Rating Council ratings that meet this without any additional coating step, which removes a line item and a compliance risk from the project.
Probe tested
Every seam checked, not spot checked
A heat-welded TPO seam is stronger than the membrane sheet when the weld temperature, speed and pressure are right, and it is a future leak when they are not. We probe test seams across the roof rather than sampling a few, because a cold weld looks identical to a good weld from three feet away and only reveals itself in the first wet season.
20 to 30
Service life you can plan a capital budget around
Published industry service life for TPO systems runs 20 to 30 years. Combined with the National Roofing Contractors Association finding that maintained commercial roofs reach roughly 21 years against 13 years for unmaintained roofs, the practical takeaway is that specification and maintenance together, not the membrane brand, determine whether you get the top or the bottom of that range.
TPO Roofing across Fairfield and nearby Solano County cities
We cover Fairfield directly from this page. For the surrounding cities, each has its own page covering the building stock, wind exposure and drainage conditions that change how this work is done there.
Other services Fairfield building owners ask about
See all commercial roofing services or read about how we work and get in touch.
Fairfield Superior Commercial Roofing provides TPO roofing across Fairfield, Solano County and the surrounding North Bay. Licensed and insured, open 24 hours a day.
TPO Roofing questions we get asked in Fairfield
Is TPO better than EPDM?
Neither is better in the abstract. TPO's heat-welded seams and reflective white surface make it the stronger choice for most California commercial roofs, particularly where cool roof compliance and summer heat load matter. EPDM has excellent published longevity, handles cold and thermal cycling well, and its adhered seams have improved considerably.
For a Fairfield warehouse with a long hot dry season and a Title 24 requirement, TPO is usually the more straightforward answer. For a simple large roof field with low aesthetic requirements and a cooler exposure, EPDM remains competitive.
How long does a TPO roof last?
Published industry ranges put TPO system life at 20 to 30 years. Thickness matters: a 45 mil membrane on a roof with heavy service traffic will not reach the same age as an 80 mil membrane on a lightly trafficked roof.
Maintenance is the other half. Keeping drains clear, catching a punctured seam early and keeping unauthorised trades off the membrane is what moves a roof toward the upper end of that range.
Can TPO be installed over an existing roof?
Often yes. A recover over one existing sound layer avoids tear-off and disposal cost, and is a common approach where the deck is structurally good and moisture scans show dry insulation.
You cannot recover over saturated insulation. Water trapped under a new membrane corrodes the deck and shortens the life of the new system, so the core cuts and moisture survey up front are not optional.
Does TPO need to be coated?
Not when new. A standard white TPO membrane already meets the Title 24 reflectance requirement out of the roll and needs no coating for compliance.
Later in life, a silicone restoration coating over an aged but structurally sound TPO roof can be an economical way to extend service life and restore reflectance without a full replacement.
What thickness of TPO should we specify?
For most warehouse and retail roofs, 60 mil is the sensible default. It carries meaningfully better puncture resistance than 45 mil and typically a longer warranty term for a modest cost increase.
Specify 80 mil where the roof sees regular foot traffic from HVAC or refrigeration servicing, where rooftop equipment is dense, or where you intend to hold the building long term.
Get a written scope for your TPO project
Free assessment, photographs and a scope you can actually compare against another bid. Serving Fairfield and all of Solano County.