Fast, Reliable Roof Replacement & Installation Across Ontario
A full roof replacement in Ontario, CA typically runs $12,000-$28,000 depending on material and square footage, with most asphalt shingle jobs completed in 2-3 days and tile or metal projects in 4-6 days. Our crews are on Ontario roofs year-round, from the historic downtown grid to the newer subdivisions near 91761, and we answer live at (844) 563-1816 every hour of every day.
We’ve been climbing Ontario roofs since 1984. We know the difference between a roof that fails in five years and one that holds for thirty, and it starts with understanding what this specific place does to materials. The Santa Ana winds channeled through the Cajon Pass, the 105°F July afternoons, the aging concrete tile stock that dominates the 91762 and 91764 ZIP codes - these aren’t footnotes. They’re the reason your neighbor’s ridge caps lifted last November while a similar roof in Pomona stayed put. When you call Ridgeline, you’re not getting a crew that’s learning Ontario on your dime. You’re getting our Roof Replacement & Installation team, and we’ve been here long enough to know which underlayments survive this sun and which fastening methods hold against those winds.
Why Ridgeline Roofing Co. Is Ontario’s Preferred Roof Replacement & Installation Company
Ontario homeowners call us because we show up. Not next week. Not with a voicemail tree. A live person answers every call, 24/7, including the middle of a Santa Ana event when you’re watching water spots bloom on your ceiling. We’ve earned that trust across 42 years, not by chasing storms into town and out again, but by hiring local crews, training apprentices into journeymen, and planning to still be here in thirty years.
Our technicians are background-checked and uniformed, and they document every inspection with photos taken from your actual roof - not a scary speech in your driveway. The 90-Day Done Right Promise backs every job: if it’s not right, we come back and make it right. No paperwork to file, no argument, no runaround. That’s a written guarantee, not a handshake you hope gets remembered.
We serve all of Ontario’s ZIP codes - 91758, 91761, 91762, 91764 - and we know the housing stock in each. The Craftsman bungalows near the historic downtown. The 1960s-1980s stucco tracts that blanket 91762 and 91764. The newer subdivisions east toward 91761. Each era brings different roofing challenges, and each gets a different approach from our crew.
Our Roof Replacement & Installation Services in Ontario
Full Roof Replacement
Most full replacements we perform in Ontario involve tear-offs of 30-45-year-old concrete or clay tile systems that have simply reached end-of-life. The mortar-set ridge caps that were standard installation practice through the 1980s degrade predictably in this environment, and the original underlayment - often 30-pound felt - has baked past usefulness. We strip to deck, inspect for damage, and rebuild with modern materials suited to Climate Zone 10’s demands. A typical full tile replacement on a 2,000-square-foot Ontario tract home runs $18,000-$28,000. Asphalt shingle replacement on the same footprint runs $12,000-$17,000.
New Construction Roofing
Ontario’s building boom near the 91761 corridor and infill projects throughout the city require crews who understand Title 24 cool-roof compliance from the first nail. We work with builders and homeowners to specify materials that meet code minimums for solar reflectance and thermal emittance without locking you into a look you don’t want. Our estimates are itemized and firm: the number we quote is the number on the invoice.
Tile Roofing
Tile dominates Ontario’s residential architecture, and for good reason. A properly installed concrete or clay tile roof sheds heat, withstands fire, and lasts decades. But installation quality varies enormously, and we’ve seen too many systems fail early because a crew trained in milder climates didn’t account for Ontario’s thermal cycling and wind exposure. We install Boral, GAF, and Atlas tile products with mechanically fastened ridge caps in wind-prone zones, not mortar-set caps that lift when the Santa Anas hit. We recently replaced a tile roof on a 1970s tract home near Vineyard Avenue where the original mortar-set ridge caps had lifted during a Santa Ana event, exposing the underlayment to UV and allowing water intrusion. Our crew performed a full tear-off, installed new synthetic underlayment, and re-set replacement concrete tiles from Boral with mechanically fastened ridge caps to withstand future wind events.
Metal Roofing
Metal roofing is gaining ground in Ontario’s newer subdivisions and on homeowners who want to break the cycle of tile replacement every 30-40 years. Standing-seam and stone-coated steel products from Tamko and others perform exceptionally well in high-UV, high-wind environments. A metal roof runs $22,000-$35,000 installed on a typical Ontario home, but the lifespan often exceeds 50 years with minimal maintenance. We size and fasten for the specific wind loads this corridor sees, not generic coastal specifications.
Flat Roofing
Flat and low-slope roofs on Ontario’s patio covers, additions, and commercial-style residential buildings face a brutal reality: the near-total absence of marine moisture means TPO and modified bitumen surfaces crack from UV exposure within 10-12 years, not the 15-20 you’d expect closer to the coast. We specify thicker mil membranes, reinforced seams, and reflective coatings calibrated for Climate Zone 10. A flat roof replacement in Ontario typically runs $8,000-$14,000 depending on square footage and access.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Ontario
We are authorized installers for GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral - seven manufacturer lines, not one-size-fits-all substitutions. For Ontario’s tile-heavy housing stock, we draw heavily on Boral’s concrete and clay tile selections and Atlas’s underlayment systems rated for extreme thermal cycling. We stock common repair components locally, so when a Santa Ana event tears through and you need ridge caps replaced fast, we’re not ordering from three states away. Most repair jobs finish in a single visit. Full replacements are scheduled with material delivery timed to your start date, not “sometime next week.”
Common Roof Replacement & Installation Problems We See in Ontario Homes
- Mortar-set ridge caps popping loose on east-facing slopes during Santa Ana winds. The prevailing downslope wind direction through the Cajon Pass catches uphill tile edges along corridors like Vineyard Avenue and Archibald Avenue, popping mortar-set ridge caps in a pattern local roofers call “chasing the Santa Anas.” Once caps lift, UV attacks the exposed underlayment and water follows at the next rain.
- UV surface cracking of flat TPO roofs within 10-12 years. Ontario’s 105°F summer highs and intense solar exposure degrade TPO membranes far faster than coastal climates. We see this routinely on patio covers and low-slope additions across 91762 and 91764, where homeowners expected 20-year lifespans.
- Tile roofs from the 1960s-1980s reaching end-of-life simultaneously. The dense belt of stucco tract homes in central Ontario was built with concrete tile roofs now 35-50 years old. Cracked tiles from decades of thermal cycling, failed underlayment, and degraded flashing create compound failures that patch repairs can’t address.
- Cool-roof non-compliance on replacement jobs. Ontario’s Title 24 Climate Zone 10 status mandates minimum solar reflectance and thermal emittance on replacement roofs. We’ve been called in after out-of-area crews installed non-compliant systems that failed inspection, costing homeowners delays and re-work.
Pricing for Roof Replacement & Installation in Ontario, CA
Here’s what Ontario homeowners can expect in today’s market:
| Service | Typical Range |
|---|---|
| Asphalt shingle replacement (2,000 sq ft) | $12,000 - $17,000 |
| Concrete or clay tile replacement (2,000 sq ft) | $18,000 - $28,000 |
| Standing-seam metal roof (2,000 sq ft) | $22,000 - $35,000 |
| Flat/low-slope TPO or modified bitumen | $8,000 - $14,000 |
| Tile ridge cap repair (localized) | $800 - $2,500 |
| Underlayment replacement only (tile roof) | $6,000 - $10,000 |
What moves the needle: roof pitch (steeper = more labor), deck condition if tear-off reveals damage, accessibility for material delivery, and whether you’re upgrading to a higher-wind or cool-roof specification. We provide itemized, upfront pricing before any work begins. The estimate is free, and the number we quote is the number you pay. Call (844) 563-1816 to schedule.
We Also Serve Cities Near Ontario
Our crews work throughout the Inland Empire, including Ontario and neighboring Chino, Rancho Cucamonga, Chino Hills, and Pomona. Each city gets the same standard: live phone answer, background-checked uniformed technicians, photo-documented inspections, and the 90-Day Done Right Promise. Wind patterns and housing stock differ from city to city, and we adjust our specifications accordingly.
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 - Roof Replacement & Installation in Ontario
Your ridge caps are likely mortar-set, the standard installation method through the 1980s, and the Santa Ana winds channeled through the Cajon Pass create higher sustained gusts in Ontario than in neighboring cities. The prevailing downslope wind catches uphill tile edges on east-facing slopes, breaking the mortar bond in a predictable pattern. We replace mortar-set caps with mechanically fastened systems rated for these specific wind loads. Call (844) 563-1816 and we’ll inspect at no charge - estimates are free.
If your underlayment is original, replacement is almost always the better investment. That felt underlayment has baked for 45-50 years in Ontario’s heat and is likely brittle or failing at fasteners. Spot repairs address visible tile cracks but leave the hidden waterproofing layer deteriorating. A full replacement with modern synthetic underlayment and mechanically fastened ridge caps typically runs $18,000-$28,000 and eliminates the cycle of repeated repairs. We can assess your specific roof and give you an honest recommendation - call (844) 563-1816 for a free estimate.
For Ontario, unfortunately yes. The intense UV exposure and 105°F summer highs in this climate zone accelerate TPO surface degradation far beyond coastal lifespans. Eleven years is at the low end but not unusual here. We specify thicker-mil TPO or reinforced modified bitumen for replacements, and we can apply reflective coatings to extend service life. The good news: a flat roof replacement typically runs $8,000-$14,000 and, properly specified, should outlast your previous installation. Call (844) 563-1816 for an exact quote.
Yes. Ontario’s Climate Zone 10 status and extreme thermal cycling demand synthetic underlayment rated for high-temperature exposure, not standard felt. We install products that maintain flexibility at sustained high temperatures and won’t become brittle where tiles overlap. This is particularly critical on south- and west-facing slopes that absorb the most heat. The right underlayment adds modest cost upfront but prevents the premature failures we see on roofs where out-of-area crews used coastal-spec materials. Call (844) 563-1816 to discuss specifications for your specific roof orientation.
Most likely not, but we verify during our pre-work inspection. Those homes were built with truss systems designed for the dead load of concrete tile, and modern lightweight tile options from Boral and others can actually reduce load if reinforcement is a concern. We check the roof deck, truss condition, and any prior modifications before finalizing our scope. The inspection is free, and we’ll show you photos of what we find. Call (844) 563-1816 to schedule.
Written by Pete Navarro, Owner at Ridgeline Roofing Co., serving Ontario and the Inland Empire since 1984.