Phased work · Operations-friendly
Commercial Roofing. Your building. Protected.
Econo Roofing delivers commercial roofing systems built to perform: with detailed proposals, expert crews, and maintenance programs that protect your asset for the long term.
Service Areas
Commercial Roofing across the Central Valley.
We serve 52 cities across 15 counties from our Delhi headquarters.
Stanislaus County(13 cities)
San Joaquin County(9 cities)
Alameda County(3 cities)
Contra Costa County(3 cities)
Sacramento County(2 cities)
Calaveras County(4 cities)
Amador County(1 cities)
El Dorado County(1 cities)
Madera County(1 cities)
Yolo County(1 cities)
How It Works
Commercial roofing, done right.
Site Assessment
We inspect your commercial roof from deck to drainage, documenting membrane condition, flashing integrity, and ponding areas. We use heat imaging and core samples when needed to assess insulation and water intrusion.
System Recommendation
Based on your building type, budget, and performance rules, we suggest the right system: TPO, EPDM, modified bitumen, or metal. You receive a flat-rate written proposal with full warranty details.
Phased Installation
We schedule around your business operations to cut disruption. Our crews work in sections so your facility can stay open throughout the project. Safety protocols meet OSHA commercial standards.
Inspection & Warranty Registration
Final inspection confirms every seam, flashing, and leak is sealed. We register your maker warranty and provide a detailed maintenance guide to boost roof life.
Roofing Systems
Built for business.
We install and service every major commercial roofing system. The right choice depends on your building, budget, and performance goals.
TPO (Thermoplastic Polyolefin)
Energy-good, heat-welded seams, and highly reflective. Ideal for Central Valley warehouses and retail buildings where cooling costs are a concern. Available in 45, 60, and 80 mil thicknesses with warranties up to 30 years.
EPDM (Ethylene Propylene Diene Monomer)
A proven rubber membrane system with excellent UV and ozone resistance. Low maintenance and cost-good for large flat roofs. 50+ year track record in commercial applications.
Modified Bitumen
Multi-layer asphalt system with superior puncture resistance. Self-adhering or torch-applied options. A strong choice for buildings with rooftop foot traffic or heavy HVAC equipment.
Commercial Metal Roofing
Standing seam and corrugated metal systems for commercial buildings that need maximum longevity and fire resistance. 40 to 60+ year lifespan with minimal maintenance.
Have a flat roof? See our dedicated flat roofing page for drainage solutions and ponding water remediation. For metal options, visit metal roofing.
Why Econo Roofing
The commercial roofing partner businesses trust.
Manufacturer-Certified Crews
OC Platinum Preferred, GAF Master Elite, and CertainTeed Select ShingleMaster certified. These credentials mean our crews are trained and audited by the makers themselves.
Commercial Warranty Programs
We offer NDL (No Dollar Limit) warranties on qualifying commercial systems. That means full coverage for materials and labor with no depreciation. Ask about 20 and 30-year commercial warranty options.
Minimal Business Disruption
We have re-roofed restaurants, offices, warehouses, and churches across Central Valley without a single day of forced closure. Phased scheduling and clean job sites are standard.
When to Call
Signs your commercial roof needs attention.
Commercial roof problems compound fast. Early detection saves tens of thousands in structural repairs.
Ponding water after 48 hours
Standing water that does not drain within two days indicates a drainage or slope problem that will deteriorate your membrane.
Bubbling or blistering membrane
Trapped water beneath the membrane causes bubbles that in time split and leak.
Interior ceiling stains
Water stains on ceiling tiles or drywall mean your roof is already leaking. The source may be far from the stain.
Rising energy costs
Damaged insulation beneath a failing roof drives up HVAC costs. A re-roof with new insulation can cut energy bills 20 to 30 percent.
Flashing separation at penetrations
HVAC curbs, vents, and pipe penetrations are the most common leak sources on commercial roofs.
Roof is 15+ years old
Most commercial systems reach the end of their good life between 15 and 25 years. A proactive assessment avoids emergency costs.
Schedule a free commercial roof inspection to find problems before they find you. For emergency leaks, our emergency roof repair team responds 24/7.
From the Blog
Learn more.
Related Guide:Commercial Inspection Checklist — our detailed guide covers everything you need to know.
Comprehensive Resource:Complete Guide to Roofing in Central Valley — everything you need to know about roofing in this climate.
Commercial roofing decisions
The commercial roofing decisions that drive 80% of cost variance.
Decision-makers comparing commercial roofing bids tend to focus on price per square foot. The bigger drivers of total cost — over a 25-year horizon — are the four decisions below. Get them right and a 20,000 sq ft warehouse roof costs $11/sq ft to operate over its life. Get them wrong and the same roof costs $19/sq ft.
Decision 1: membrane thickness (45 vs. 60 vs. 80 mil)
A 60-mil TPO costs about 8–12% more than 45-mil installed but lasts 5–8 years longer in Central Valley UV. 80-mil is reserved for high-traffic roofs (HVAC service crews, equipment storage). For most warehouses, 60-mil is the sweet spot. Single biggest spec mistake we see in competitor bids: 45-mil on a roof with frequent rooftop traffic.
Decision 2: tear-off vs. recover
A recover (new membrane installed over old) saves 30–40% on initial cost but is only allowable once per roof under the California Building Code, and only if the existing substrate is dry. We core-sample first; if moisture content exceeds 5% by weight in the insulation, recover isn't safe and we recommend full tear-off. The decision is documented in writing on every commercial proposal.
Decision 3: NDL warranty vs. standard manufacturer warranty
An NDL (No Dollar Limit) warranty covers materials and labor with no depreciation cap for 20–30 years. It costs about 4–7% more upfront but eliminates the financial cliff on a single major leak event. For owner-occupied buildings, NDL almost always pencils out. For buildings on the market within 5 years, the math changes — we walk you through both scenarios.
Decision 4: cool roof vs. standard membrane
For Central Valley summers (100°F+), a cool-rated white TPO membrane cuts HVAC cooling loads 15–25% vs. dark membranes. California Title 24 mandates cool roofs on most commercial replacements anyway. For buildings with rooftop solar, cool membrane also extends panel efficiency by reducing surface temperature.
Compare with our other commercial offerings: flat roofing (TPO/EPDM specifics), commercial metal roofing, roof coating restoration. For multi-tenant properties, see property management roofing and HOA roofing.
Frequently asked
About commercial roofing.
How is commercial roofing different from residential?
Commercial systems are flat or low-slope (usually 1:12 to 4:12 pitch), use single-ply membranes (TPO, EPDM, modified bitumen) instead of shingles, and require unique waterproofing strategy at penetrations like HVAC curbs, drains, and skylights. The labor and material expertise are fundamentally unique.
What does commercial TPO cost per square foot?
60-mil TPO installed in California's Central Valley usually runs $7–$12 per square foot, depending on substrate condition, insulation R-value, edge metal scope, and HVAC leak count. A 20,000 sq ft warehouse re-roof usually lands $140K–$240K.
Do you re-roof while we stay operational?
Yes. Most commercial re-roofs we do are phased — we complete sections at a time so business operations continue. We coordinate around your peak hours, isolate dust during tear-off, and protect interior assets when membrane is open.
What warranties are available on commercial roofing?
TPO membranes usually carry 15–30 year maker warranties (Carlisle SynTec, Firestone, GAF Everguard). Workmanship warranties from Econo Roofing run 5–10 years depending on system. We provide a single written package covering both.
What's the typical lifespan of a commercial flat roof?
60-mil TPO: 20–30 years with proper maintenance. EPDM (rubber): 25–30 years. Modified bitumen: 15–20 years. Silicone coating restoration: 10–15 more years on a sound substrate. The maintenance program matters more than the material choice.
Do you handle insurance claims for commercial buildings?
Yes. We document storm damage with drone imagery, meet adjusters on-site, provide detailed scope reports, and negotiate scope with the insurer when needed. Most claims close within 4–6 weeks of damage.
What's the biggest cost driver in commercial roofing — price per sq ft or warranty tier?
Over a 25-year horizon, warranty tier matters more. An NDL (No Dollar Limit) warranty costs 4–7% more upfront but eliminates the financial cliff on a major leak event. Membrane thickness (60-mil vs. 45-mil) is the second biggest driver. The cheapest bid by sq ft is rarely the cheapest by total cost of ownership.
How do I choose between tear-off and recover on a commercial roof?
Core-sample first. If insulation moisture content is under 5% by weight and the substrate is structurally sound, a recover saves 30–40% on initial cost. Above 5% moisture, a recover traps water and accelerates failure — full tear-off is the right call. California Building Code allows only one recover per roof, so the decision affects future options too.
Is a cool roof worth the upcharge on a Central Valley commercial building?
Almost always, yes. A cool-rated white TPO membrane cuts HVAC cooling loads 15–25% vs. dark membranes during 100°F+ summers. California Title 24 mandates cool roofs on most commercial replacements anyway. Payback on the upcharge typically runs 3–5 years from utility savings alone.
A note from Mario
How we approach commercial roofing.
A commercial roof isn't a building accessory — it's a 25-year asset. Design it to be re-roofed, maintained, and warranty-tracked from day one.
Property types we re-roof
Commercial roofing for every property type.
Every commercial building has its own quirks. A restaurant roof, a tilt-up warehouse, a strip-mall, and a medical office all need different membranes, different install windows, and different documentation. Below is how we approach each property type across the Central Valley. Mario walks every roof before we quote, so the system we recommend matches the building, the budget, and the way the business operates day to day.
Restaurants & food service buildings
Restaurant roofs work harder than almost any other commercial building. Grease vents, kitchen exhaust hoods, walk-in cooler curbs, and rooftop HVAC units all create penetrations that fail first. Grease vapor coats the membrane around the hood, breaking down standard TPO seams within a few seasons.
For most full-service restaurants and quick-service buildings we spec a 60-mil to 80-mil PVC or fleece-back TPO rated for grease and animal-fat exposure. PVC handles grease far better than standard TPO and meets most franchise spec sheets.
- Grease shields and stainless drip pans installed at every kitchen hood penetration.
- Walk-in cooler curbs reflashed with reinforced corner detail to stop interior condensation drips.
- After-hours and split-shift installs so the dining room and drive-thru keep serving.
- Health-code-ready documentation for county inspectors and franchise compliance.
Mario coordinates directly with the operator on rooftop unit sequencing so refrigeration never goes off line during tear-off. Restaurants in strip-mall settings share roof structure with neighboring tenants, so review our retail centers section below if your building has shared HVAC or shared parapets.
Common cities: Modesto, Stockton, Sacramento, Turlock, Merced.
Warehouses & industrial facilities
Warehouse and distribution roofs cover huge spans, so even small membrane failures turn into wet pallets and damaged inventory fast. Tilt-up concrete panels, long open-web steel trusses, dozens of skylights, and sprinkler-pipe penetrations all change how the system has to be detailed.
Our default spec is 80-mil mechanically attached TPO or 60-mil PVC, with cover-board over the existing insulation when the deck is sound. For very large footprints we move to induction-welded systems to reduce fastener pullout under wind uplift.
- Skylight curbs reflashed and replaced with impact-rated domes (often required by Cal/OSHA fall protection rules).
- Sprinkler riser and conduit penetrations boot-sealed with engineered pipe boots, not field-cut patches.
- Tilt-up panel-to-roof tie-in detailed with reinforced termination bar and sealant joint.
- Phased install by bay so receiving, shipping, and order picking keep running.
- Walk pads installed to rooftop equipment so service techs do not damage the new membrane.
Mario reviews structural load with the building owner before tear-off. If you are adding solar, more equipment, or a mezzanine in the next five years we plan the roof and curb layout for that future load now, not after the fact.
See also our TPO roofing guide and the flat roofing systems overview.
Retail centers & strip malls
Strip centers and neighborhood retail buildings have one big complication: multiple tenants under one roof, each with their own HVAC unit, their own lease terms, and their own opinion about who should pay for what. The roof needs to be installed without closing any storefront, and the billing has to be defensible to every tenant CAM (common-area maintenance) charge.
Most retail roofs we re-roof get 60-mil mechanically attached TPO with extra reinforcement around the heavy rooftop HVAC units that tenants keep adding. Older retail buildings often have built-up roofs (BUR) at end of life; we tear off and recover with a single-ply system unless the deck dictates otherwise.
- HVAC unit weight verified before tear-off; reinforced curbs added where loading approaches deck limits.
- Multi-tenant zone billing with square-foot allocations clean enough to pass a CPA-led CAM audit.
- Façade and parapet tie-ins detailed to stop water tracking behind stucco or EIFS.
- Storefront-by-storefront sequencing so no tenant loses a Saturday of foot traffic.
- Documentation packets for each tenant lease file (warranty, scope, dates, photos).
Many retail centers contain restaurants and quick-service tenants — see the restaurants & food service section above for grease-rated detailing on shared roofs.
Common cities: Modesto, Stockton, Tracy, Manteca.
Churches & religious buildings
Church roofs combine architecture you cannot replicate (bell towers, steeples, dormers, stained-glass windows) with a funding cycle driven by donations and capital campaigns. The job has to land inside a budget the board approved months ago, often without surprise change orders.
For traditional sanctuary buildings with sloped roofs we install architectural asphalt or standing-seam metal; for fellowship halls and modern church plants with low-slope sections, TPO or modified bitumen. Stained-glass coordination is critical: any flashing tie-in around leaded glass needs a glazier on site, not a roofer guessing.
- Bell tower and steeple flashings rebuilt with hand-formed copper or coated metal.
- Stained-glass perimeters protected with temporary plywood cladding during tear-off.
- Donor-funding-cycle scheduling: phased work that aligns with capital-campaign disbursements.
- Sunday-service and weekday-school work-around scheduling — typically Monday through Thursday only.
- Itemized scope documentation suitable for board approval and donor reporting.
Mario presents in person to church boards across the Central Valley and provides written scope packets ahead of board meetings.
Schools & educational buildings
School roofing is the most schedule-sensitive work we do. The window is essentially mid-June through early August, and August occupancy cannot move. Districts also bring DSA review, prevailing-wage compliance, and frequent asbestos abatement on older buildings.
For most K-12 buildings we spec 60-mil to 80-mil TPO with cover-board, which delivers a reflective Title 24 cool-roof surface and a 20-year manufacturer warranty. Older buildings with multiple BUR plies often need abatement before tear-off.
- Summer-only install windows planned backwards from the August occupancy date.
- Asbestos abatement coordinated with a licensed abatement contractor where required.
- Prevailing-wage crews and certified payroll on every public-school project.
- Cal/OSHA fall protection plans and DSA-ready documentation packets.
- Daily site security so the campus stays locked down during break.
Mario coordinates the schedule directly with the maintenance director and superintendent. We have re-roofed elementary, middle, and charter campuses across Stanislaus, Merced, and San Joaquin counties.
Common cities: Modesto, Turlock, Merced, Stockton.
Medical offices & dental practices
Medical and dental buildings cannot tolerate dust intrusion. HEPA filtration in operatories and exam rooms pulls air aggressively, and a poorly sealed tear-off can shower fine particulate into a sterile environment. We treat these like surgical-suite remodels, not roof jobs.
Most medical office buildings get modified bitumen (two-ply SBS) or fully adhered TPO so we avoid mechanical fasteners that vibrate ceilings. Dental practices with cleanroom areas often require negative-pressure containment during tear-off.
- HEPA filtration and intake protection coordinated with the practice manager before tear-off begins.
- Cleanroom and operatory protection: temporary ceiling membranes installed below tear-off zones.
- After-hours and weekend work to avoid disrupting patient appointments.
- Adhered membrane systems chosen so vibration through the deck stays minimal.
- Documentation suitable for medical-property insurer and biohazard-handling reviews.
Mario coordinates with the office manager on patient flow and with the building owner on after-hours access. For multi-tenant medical office buildings see also our retail centers section above.
Hotels & hospitality
Hotel roofs hide guest-experience risk. A noisy tear-off above an occupied guest floor turns into refunded nights and bad reviews fast. Pool deck waterproofing, signage tie-ins, and rooftop HVAC clusters add complexity most contractors underprice.
For limited-service and mid-scale hotels we install 60-mil TPO with acoustic cover-board to dampen install noise reaching guest rooms below. Pool decks and balcony walking surfaces get hot-applied liquid-applied membrane rated for pedestrian traffic.
- Floor-by-floor work sequencing so the front desk can re-block guests away from the active zone.
- Pool deck waterproofing tied into the main roof system with continuous flashing.
- Signage and porte cochère tie-ins reflashed without removing the sign permit assembly.
- Acoustic underlayment specified to limit install noise reaching guest rooms.
- Daily clean-down so the porte cochère and entry stay guest-ready every morning.
Mario coordinates with the GM and the brand inspector (Hilton, Marriott, IHG, Choice) so the install meets brand-standard documentation.
Dedicated guides
Specialty property segments — dedicated guides.
Some property types have so much detail that they earned their own deep-dive page. If you manage one of the buildings below, the linked guide is the right starting point.
HOA & community associations
Board-driven projects with reserve-study coordination, written board packets, and unit-by-unit resident communication. We have a dedicated guide for community associations.
Commercial condominiums
Mixed-ownership buildings with shared roof decks, individual unit waterproofing concerns, and association-level approval workflows. Our condo guide covers the full process.
Multi-family & apartment buildings
Garden-style and stacked apartment buildings with resident-notice requirements, building-by-building phasing, and lender-driven warranty paperwork. We have a dedicated guide for apartment owners.
Property management portfolios
Portfolio-level work with consolidated reporting, owner-by-owner billing splits, and standardized warranty documentation across many buildings. Our property-management guide covers the workflow.
Get started
Ready for your commercial roofing estimate?
Free inspection. Flat-rate written estimate. Zero obligation. We confirm every appointment within one business day.
Or call (209) 668-6222