ASPHALT SHINGLE
Mismatched Shingle Patch Replaced
Before: an asphalt shingle roof with a conspicuous mismatched patch in the field. After: a uniform new shingle surface across the full plane.
Licensed Roofing ContractorCSLB #896271
Licensed California Roofing Contractor, CSLB #896271
Ontario stretches from the historic Holt Boulevard grid south across the airport to the new Ontario Ranch master-planned communities, covering nearly 50 square miles of San Bernardino County's southwestern corner. The northern half holds the city's pre-1940 craftsman and Spanish-revival housing on skip sheathing, where tear-offs require a full re-deck. South of the 60 Freeway, Ontario Ranch and Edenglen built out on heavy concrete tile and Title 24 cool-roof assemblies through the 2010s and 2020s. The airport and warehouse belt anchors the city's commercial flat-roof inventory, mostly single-ply TPO and modified bitumen on long-span roofs. Roof Doctors covers all four city ZIPs.
Ontario's age range is wider than any other Inland Empire city. The downtown Ontario grid around Euclid Avenue and Holt Boulevard carries 1900s-1920s craftsman bungalows and Spanish Colonial Revival cottages on original skip sheathing, which means tear-offs trigger a full re-deck to OSB. The 1990s-2010s expansion southward into Ontario Ranch, Edenglen, and New Haven brought heavy concrete tile on 4:12 to 5:12 pitches with Title 24-compliant cool-color blends. Ontario International Airport and the surrounding warehouse belt anchor a huge commercial flat-roof inventory in TPO, EPDM, and modified bitumen across the southern half of the city. Title 24 cool-roof requirements apply on all low-slope sections under the city's adopted 2022 Energy Code. Permits route through the city permit counter.
Roof Doctors provides every category of roofing service across Ontario, including the Tier 1 hubs for repair and storm damage along with our standalone services. Each links to the dedicated service page with full pricing and process details.
Targeted shingle, tile, wood shake, and flat-roof repair across Ontario. Property age and material mix vary; the work scope follows from the inspection findings.
Full re-roofs with GAF and Owens Corning materials. Title 24 cool-roof and Chapter 7A wildfire-rated assemblies apply for Ontario zones that require them.
Pre-storm, pre-listing, and insurance-claim inspections statewide. Documented written reports tailored to Ontario property age and exposure.
2-year leak-free certification per California BPC Section 7197. Required for many real estate transactions in this area.
Full-service residential roofing across Ontario. HOA coordination where applicable, daily site cleanup, and homeowner-scale warranties.
TPO membrane, silicone coating, and flat-roof systems for Ontario commercial properties.
San Bernardino's range from Inland Empire humidity to high desert extreme dry cycles drives recurring dry rot pressure on San Bernardino properties.
Heavy winter rain, wind, and hail damage response. Direct adjuster coordination with 14 carriers serving Ontario and San Bernardino County.
Gutter protection systems for Ontario's seasonal leaf and debris load. Prevents fascia damage, backups, and roof penetration leaks.
Ontario's housing stock spans four primary roofing materials, each with distinct repair and replacement considerations. Roof Doctors maintains C-39 licensed crews trained on every material type in the local market.
The most common Ontario roof material on residential properties. San Bernardino County's climate typically yields 12 to 20 years of asphalt service life.
Clay and concrete tile is common across Ontario's newer construction. Tile handles UV well but requires specialty repair after hail or impact events.
Found on older Ontario homes and historic buildings. San Bernardino's foothill wildfire risk and desert extreme UV have moved nearly all properties off wood shake. Roof Doctors specialty since 1987.
TPO membrane, silicone coating, and built-up roofing on Ontario commercial buildings and some modern residential designs. Heavy winter rain is the leading flat-roof failure trigger locally.
Two intake paths depending on who you are. Both connect you to a licensed C-39 inspector within 1 to 2 business days.
Trouble with storm damage, maintenance, or leaks? Request a Roof Inspection and a friendly, knowledgeable technician will be on-site within 1 to 2 business days.
If you're looking for an inspection as part of the real estate process, we've got you covered. Make sure to ask about our signature Two-year Certification Warranty.
San Bernardino County is the largest county in California by land area and spans an extreme climate range. Inland Empire tract suburbs (San Bernardino, Rancho Cucamonga, Ontario, Fontana, Chino, Chino Hills, Redlands, Upland, Rialto) sit in a hot Mediterranean valley with intense Santa Ana wind events; the San Bernardino mountains and foothill transition see significant wildfire risk; the high desert communities (Victorville, Apple Valley, Hesperia, Adelanto, Barstow, Twentynine Palms, Yucca Valley, Phelan) see hot dry summers (105 to 110 degree Fahrenheit) and cold winters with occasional snow and freeze; the Blythe area at the Colorado River sees Imperial Valley-equivalent extreme heat.
Ontario stretches across both the Cucamonga-Ontario gap Santa Ana wind corridor and the warehouse-belt heat island around the airport, where July and August daytime roof-surface temperatures routinely exceed 165 degrees on dark-colored single-ply membranes. The combination drives flat-roof seam fatigue faster here than in the cooler northern Inland Empire.
Heavy winter storms bring sustained high winds and concentrated rainfall.
The county spans Inland Empire Mediterranean tract, foothill wildfire zones, and desert communities. Roof material and assembly selection vary dramatically by climate position within the county.
Coachella Valley (Palm Springs, Palm Desert, Indio) and high desert (Victorville, Apple Valley, Twentynine Palms) see 105 to 115 degree Fahrenheit+ summer routine, shortening asphalt service life to 12 to 16 years.
Desert communities see summer monsoonal microbursts bringing intense brief wind and rain.
Inland Empire and foothill communities see significant Santa Ana wind events driving wildfire risk in the WUI zones. In wildland-urban interface zones, California's Chapter 7A requires Class A fire-rated roof assemblies.
Roof Doctors provides service across Ontario's residential areas. Coverage and inspection approach reflect the property age and exposure profile of each address.
A few examples of roofing work completed by our crews.
Before: an asphalt shingle roof with a conspicuous mismatched patch in the field. After: a uniform new shingle surface across the full plane.
Before: a wood shake roof with the hip opened up and shakes removed for access. After: new hip flashing and underlayment installed, photographed before the shakes were re-laid.
Before: a concrete tile roof with lifted tiles exposing worn valley and hip flashing. After: new metal flashing installed, photographed with the tile staged before it was re-laid.
Permit requirements for Ontario roofing work depend on the scope and the jurisdiction. Roof Doctors handles all permit coordination as part of the contract price.
The same 5-step process across every Ontario project, from initial inspection through warranty registration.
C-39 licensed inspector visits your Ontario property, documents damage, identifies underlying causes.
No-obligation written estimate detailing scope, materials, timeline, and warranty terms.
If applicable, direct adjuster coordination, claim documentation, and approval processing.
Professional installation by trained crew. Daily site cleanup. All Ontario-area permits pulled.
Post-completion inspection, warranty registration, documentation transfer.
Wind, hail, and water damage from winter storms are common causes of roof insurance claims and are typically covered by homeowners insurance. Roof Doctors documents damage, coordinates with adjusters, and processes claims with every major California carrier.
Three and a half decades of California-specific expertise applied to Ontario's specific roofing profile. Local case studies, named C-39 inspectors, and Southern California dispatch.
Every Ontario project staffed by license-quality repairmen. C-39 standards apply to all work, every job, every neighborhood.
1-year workmanship plus 4-year installation defects on every Ontario repair. Optional 2-year leak-free certification per California BPC Section 7197.
★★★★★
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“Prompt, very informative, and honest. Bill inspected my roof. No leaks. End of story. They had certified my roof a year prior. I am very satisfied with the level of service.”
“Showed up quickly during a storm, figured out problem, provided a solution.”
“Troy was informative and professional. Would recommend to other home owners.”
Answers to the most common Ontario-specific roofing questions.
Roof repair costs in Ontario depend on the specific roof, so the price is determined after an inspection rather than quoted from a table. The main factors are the size and pitch of the roof, the roofing material, how many existing layers need to be removed, the condition of the decking underneath, how accessible the roof is, and whether related work such as flashing, ventilation, or gutter repair is needed. Damage that is not visible from the ground, like dry rot or a compromised deck, is often what moves a job from a small repair to a larger one, which is why the roof is assessed before a price is given.
Within Ontario city limits, simple repairs (replacing a few shingles or tiles) typically do not require a permit. Larger repairs involving structural decking, full sections, or any work touching electrical or solar require a permit from the City of Ontario Building Department. As a C-39 licensed contractor (CSLB #896271), Roof Doctors pulls all required permits.
Ontario's split between historic shingle, modern tile, and commercial flat-roof inventory gives every material class a different lifespan curve. Asphalt shingle on the Holt Boulevard craftsman blocks typically runs 16-20 years before significant granule loss, with Santa Ana wind events through the Cucamonga gap accelerating ridge-cap and edge-metal failure. Concrete tile on the Ontario Ranch and Edenglen subdivisions generally outlasts its underlayment by 10-15 years, so a 25-year tile-lift-and-relay with new synthetic underlayment is the standard intervention. Commercial single-ply TPO on the airport-area warehouse belt runs 18-22 years on white reflective installations versus 14-17 years on dark or unmaintained roofs; the airport heat island shortens both numbers by roughly two years compared to cooler sections of the Inland Empire.
Roof Doctors serves the Ontario area broadly, including adjacent San Bernardino County neighborhoods. Use the neighborhoods grid above or call (800) 913-1180 to confirm your specific address falls within our active service area.
Ontario property owners benefit most from inspections in early fall (September to October) before heavy winter rain season begins, and in late spring (April to May) to assess winter damage. Real estate transactions typically require inspection at time of listing. Roof Doctors offers inspections statewide and provides inspection reports usable for insurance documentation.
Yes. Roof Doctors works directly with insurance adjusters on Ontario storm damage claims and is authorized to process claims with 14 major carriers including State Farm, Allstate, USAA, Farmers Insurance, Liberty Mutual, Travelers, and California FAIR Plan. Wind, hail, and heavy winter rain are common causes of roof insurance claims in California.
A licensed C-39 inspector will visit your property, document any issues with photographs, and provide a written estimate. No obligation, no advance deposit.
