Architectural shingles
Metal roofing
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Roofers in Ontario, CA
Roof inspection in Ontario catches wind damage before it becomes a leak, and it’s the service most homeowners here should book first. Ontario sits in the Santa Ana wind corridor, where dry 60-80 mph gusts off the Cajon Pass pull up shingles and shift tile on aging roofs. The city’s 1970s-90s tract homes are now hitting the 20-25 year lifespan on their original materials. We’re Windmill Roof Repair, and we’ve served Ontario since 2018. Call (866) 850-2496 for a free estimate on any roofing concern.
Why Ontario Homes Are Different
Ontario’s roofing problems come from wind and heat working together. The Santa Ana winds that blow through the Cajon Pass each fall are the primary cause of shingle blow-off and tile displacement in this city. A roof that handled last winter’s rain without leaking can still lose ridge caps and field shingles in a single October wind event. The heat is the quieter problem: triple-digit summer days bake asphalt shingles until the sealant strips cook away and granules start shedding into the gutters.
The housing stock splits into two distinct types. The 1950s-60s cottage homes near downtown Ontario have shallow-pitch or low-slope roofs that hold water differently than modern designs. Meanwhile, the stucco tract subdivisions off the 60 and I-15, built through the 1970s, 80s, and 90s, are full of original 3-tab shingles and concrete tile that were installed with fastening methods that don’t match today’s wind-uplift standards. In those neighborhoods, after a Santa Ana event, you’ll see the same pattern repeated: ridge caps and field shingles scattered along the same streets where the sealant strips gave out years ago.
Permit requirements vary by scope in Ontario, and we handle the paperwork on replacements. The key local reality is that ember-resistant and wind-rated assemblies matter more in Ontario than rain shedding alone, because the wind will test a roof long before the next storm arrives.
Styles & brands we work with
Our Main Ontario Services
Ontario homeowners call us most often for two things: repairing wind-lifted shingles before the next storm, or replacing a roof that has reached the end of its useful life in this harsh climate. Here’s what each one involves.
Roof Repair in Ontario
After a Santa Ana wind event, repair work in Ontario usually means re-fastening lifted shingles, replacing blown-off ridge caps, and re-bedding displaced concrete tile. The challenge here is that the original sealant strips on 20-plus-year-old 3-tab shingles have long since cooked away, so even a moderate wind finds an easy grip. We repair what’s repairable and tell you plainly when a full replacement is the better financial call. Learn more about Roof Repair in Ontario.
Roof Replacement in Ontario
Replacement in Ontario is about matching materials to the wind corridor reality. A roof that goes back on with the same under-driven fasteners and low-grade sealant will fail the same way in the next big blow. We walk you through wind-rated options from GAF, CertainTeed, Owens Corning, and others, so you choose what actually fits your budget and your roof’s exposure. Learn more about Roof Replacement in Ontario.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Roof Inspection in Ontario
A roof inspection in Ontario tells you what the wind and heat have already done to your roof, before you discover it through a ceiling stain. Homes built in the 1970s-90s tracts are now at or past the expected lifespan of their original asphalt shingles, and the Santa Ana winds expose every weakness. We offer inspections as a standalone service with no obligation to buy anything afterward. You’ll get a straight answer about condition, remaining life, and what needs attention now versus later. This is the same service we describe on our Roof Inspection page.
Roof Inspection Services
Signs you need it
Granules in the gutter, lifted shingle corners, or visible tile shifts after a wind event are the most common triggers in Ontario.
What it costs in Ontario
Roof inspection in Ontario typically runs $150 to $550 depending on the roof type and the detail of the report.
How we do it
We walk the roof surface, check every flashing point, examine the attic for moisture and ventilation issues, and document everything with photos for your records.
Hail Damage Roof
Signs you need it
Though hail is less common in Ontario than wind, a storm cell can still leave circular bruise marks on shingles and cracked tiles that compromise the roof’s water-shedding ability.
What it costs in Ontario
A hail-specific roof assessment in Ontario typically costs $200 to $600, depending on the roof’s accessibility and complexity.
How we do it
We check every slope for impact patterns, test shingle adhesion, document the damage, and provide the written summary you can use for an insurance claim if needed.
What Roof Inspection Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Standard roof inspection | $150 – $550 |
| Hail damage assessment | $200 – $600 |
| Pre-purchase roof inspection | $200 – $500 |
How often should a roof be inspected in Ontario?
Once a year is the right cadence, and twice a year is better if your home sits in one of the wind-exposed tracts off the 60 or I-15. An inspection in late fall before the Santa Ana season catches loose shingles before the gusts do.
Can a roof inspection in Ontario tell me if I need repairs or a full replacement?
Yes, that’s the core of the service. We’ll tell you the remaining lifespan, the specific failure points, and whether targeted repair is worth doing or if a replacement is the smarter money. Call (866) 850-2496 to schedule.
Brands We Service in Ontario
We work across seven shingle brands, including GAF, CertainTeed, Owens Corning, and Boral, so you’re never locked into a take-it-or-leave-it product. Parts for the major brands are stocked locally, which keeps repair turnaround tight. See our brands for the full lineup.
See the difference
Before
After
Before
After
Before
AfterPricing for Roofers in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Standard roof inspection | $150 – $550 |
| Hail damage assessment | $200 – $600 |
| Pre-purchase roof inspection | $200 – $500 |
| Minor shingle repair | $350 – $600 |
| Leak repair (localized) | $400 – $900 |
| Flashing replacement | $300 – $700 |
| Ridge cap repair | $350 – $800 |
| Tile replacement (per tile) | $20 – $50 |
| Full asphalt shingle replacement | $8,000 – $16,000 |
| Tile roof replacement | $15,000 – $30,000 |
| Flat/low-slope roof replacement | $10,000 – $20,000 |
What pushes a price up in Ontario is wind exposure: homes in the northern and eastern tracts that catch the full force of Santa Ana gusts often need upgraded fastening and more re-decking than sheltered lots. Every quote we give is a fixed line-item price, so the number you approve is the number you pay.
Neighborhoods We Serve in Ontario
We cover every ZIP code in Ontario: 91758, 91761, 91762, and 91764. Most inspection calls in Ontario get scheduled within a few business days, and we route repair work after a wind event based on which tracts took the worst of the gusts.
- Downtown Ontario and the historic cottage district
- North Ontario tract neighborhoods off the 10
- East Ontario subdivisions off the 60 and I-15
- South Ontario near the 60 corridor
- West Ontario neighborhoods along the 83
Service Area – Cities Near Ontario
Windmill Roof Repair serves the surrounding Inland Empire communities from our base in Pico Rivera. If you’re in Montclair, CA, Upland, CA, Chino, CA, or Claremont, CA, we offer the same inspection, repair, and replacement services across those cities.
Serving Ontario, CA — Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Roofers in Ontario
Yes, on replacement work we pull all required permits and schedule the inspections with the city so the job closes out fully compliant. Repairs that fall below the permit threshold are handled without the added paperwork. We’ll tell you which applies to your project before work begins.
We prioritize wind-damage calls by severity, and homes in the exposed tracts off the 60 and I-15 typically get a technician out within a few business days. If you’ve lost shingles and rain is in the forecast, we’ll move you up the schedule. Call (866) 850-2496.
We do. The 1950s-60s cottage homes near downtown often have shallow-pitch roofs and outdated flashing details, and we’re comfortable working on both the structure and the materials. The approach there is to preserve what’s sound and correct what’s failing, not to force a modern system where it isn’t needed.
What happens when you call
- 1A real person answersNo phone trees — talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Ontario Customers Say
"Storm took part of the ridge off at night. They tarped it the same evening so the rain didn't get in, and did the real repair the following week."
— Ramon Reyes"Added a ridge vent and cleared the blocked soffit vents. Attic temperature in the summer dropped noticeably and the upstairs is livable now."
— Dale Parker"Leak over the kitchen turned out to be a cracked boot around a vent pipe, not the roof itself. He showed me the photo from up there and replaced the boot for a couple hundred dollars. The company before him had quoted a full tear off."
— Ryan Miller