Fast, Reliable Roof Replacement & Installation Across Ontario
A full roof replacement in Ontario typically runs $12,000-$28,000 depending on materials and square footage, with most asphalt shingle jobs completed in 2-3 days and tile or metal systems in 4-6 days. We’re Ridgeline Roofing Co. of California, and we’ve been climbing Ontario roofs since 1984. From the aging wood-frame tracts north of the 60 Freeway to the sprawling Ontario Ranch subdivisions south of Edison Avenue, we know which roofs hold and which ones are telling you they’re done. Our crews are based in Los Angeles County, which means we’re usually on an Ontario roof within 45 minutes of your call. If you’re seeing cracked tiles, missing ridge caps, or asphalt shingles curling at the edges, call us at (877) 367-1429. A live person answers, day or night.
Why Ridgeline Roofing Co. of California Is Ontario’s Preferred Roof Replacement & Installation Company
We’ve been standing behind roofs in the Inland Empire for over 42 years. That’s not a marketing number. That’s Cole Drummond showing up to jobs his father quoted in 1987, still using the same square-deal philosophy: the price we quote is the price you pay.
Ontario homeowners know the difference between a local crew and a storm-chasing outfit that’ll be in Texas by next spring. We’re the former. Our technicians are background-checked, uniformed, and trained in-house, not subcontracted from a day-labor pool. Every inspection gets photo-documented from your actual roof, not a sales pitch in your driveway.
Our 90-Day Done Right Promise means exactly what it says. If it’s not right, we come back and make it right. No paperwork to file, no arguments, no runaround. We’ve honored that promise on thousands of Ontario-area jobs, from the older neighborhoods near Holt Boulevard to the newer tracts off Archibald Avenue.
And when you call (877) 367-1429, a live person answers. Not a voicemail tree. Not a callback window. A real human, 24 hours a day, including the middle of a Santa Ana wind event when your ridge caps are blowing across the neighbor’s yard.
Our Roof Replacement & Installation Services in Ontario
Full Roof Replacement
Some Ontario roofs are past patching. The asphalt shingle homes north of the 60 Freeway, built from the 1940s through the 1980s, often hit this point around the 25-30 year mark. Granule loss, curling edges, and visible decking stains mean the system has failed. We strip to the deck, inspect for rot, install proper ventilation, and build back with materials suited to Ontario’s 160°F summer rooftop temperatures. A typical full replacement on a 1,800-square-foot Ontario home runs $14,000-$22,000 for asphalt, $22,000-$34,000 for concrete tile, and $28,000-$45,000 for standing-seam metal.
Tile Roofing
This is where our Ontario expertise runs deepest. In the 91761 ZIP, entire Ontario Ranch subdivisions are hitting their 15-20 year concrete tile maintenance window at nearly the same time. The builder-grade mortar ridge caps installed in the 2005-2010 building boom are failing on a predictable schedule, accelerated by Santa Ana wind gusts that hit harder here than in neighboring Chino or Pomona. We replaced 30 identical builder-grade concrete tile roofs on a single street in the Ontario Ranch ‘New Haven’ tract. Every home had mortar-failed ridge caps and cracked tiles from decades of 160°F summer heat. We upgraded all to GAF Liberty SBS underlayment and Owens Corning Duration shingles, adding a Class IV impact-resistant warranty. The homeowner association coordinated the block-wide project after we fixed the first house. Tile replacement in Ontario Ranch typically runs $18,000-$32,000.
Asphalt Shingle Replacement
For Ontario’s older housing stock, asphalt remains the practical choice. We install GAF Timberline HDZ and Owens Corning Duration lines with proper underlayment rated for Inland Empire thermal cycling. The key is ventilation: Ontario’s combination of extreme heat and Santa Ana dryness will cook an improperly vented attic, cutting shingle life by a third. We calculate ridge vent and soffit flow for your specific roof geometry, not a one-size-fits-all formula. Most asphalt replacements in Ontario fall between $12,000-$20,000.
Metal Roofing
Standing-seam metal is gaining ground in Ontario’s newer custom builds and select Ontario Ranch upgrades. It sheds heat faster than asphalt, holds up to wind better than tile, and carries a 40-70 year lifespan. We install Atlas and Tamko metal systems with concealed fasteners that won’t back out in thermal expansion. Metal runs $28,000-$45,000 installed in the Ontario market, but the lifecycle math works for homeowners planning to stay put.
What happens when you call
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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’re authorized installers for seven manufacturer lines: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Ontario homeowners, this means we don’t substitute materials mid-job. If we specify GAF Liberty SBS underlayment for your Ontario Ranch tile replacement, that’s what goes on your roof. We stock common profiles locally, so a blown ridge cap or cracked tile doesn’t turn into a two-week wait. Our relationships with these manufacturers also mean your warranty gets registered properly, not lost in a subcontractor’s paperwork shuffle.
Common Roof Replacement & Installation Problems We See in Ontario Homes
- Mortar-failed ridge caps from Santa Ana winds. Ontario’s position at the base of the Cajon Pass funnels wind gusts stronger than neighboring cities see. Builder-grade mortar ridge caps, especially on 2005-2010 Ontario Ranch homes, blow off seasonally. We replace these with foam-adhered or mechanical systems that survive the next event.
- Thermal-cracked concrete tiles in Ontario Ranch. Rooftop temperatures routinely exceed 160°F in summer. Builder-grade tiles from the 2005-2010 building wave weren’t engineered for that cycling. Cracking shows up first on south-facing slopes, then spreads.
- Granule loss and curling on pre-1980s asphalt north of the 60 Freeway. These wood-frame tracts often have original or second-generation shingles past their design life. The damage shows before leaks start, which is your window to replace before decking rot sets in.
- Inadequate underlayment for Inland heat. Older Ontario roofs, and some newer ones, use underlayment rated for milder climates. It degrades from the inside out. We specify SBS-modified or synthetic underlayment rated for 160°F+ surface temperatures.
Pricing for Roof Replacement & Installation in Ontario, CA
Here’s what Ontario homeowners can expect in today’s market:
| Service | Typical Range in Ontario |
|---|---|
| Asphalt shingle replacement (1,800 sq ft) | $12,000 - $20,000 |
| Concrete tile replacement (1,800 sq ft) | $18,000 - $32,000 |
| Standing-seam metal (1,800 sq ft) | $28,000 - $45,000 |
| Flat roof (TPO/PVC, 1,500 sq ft) | $8,500 - $15,000 |
| New construction roofing | $10,000 - $35,000+ |
What moves the number: roof pitch (steeper costs more), decking condition, ventilation upgrades, and whether we’re working around solar panels common in newer Ontario Ranch builds. We provide upfront pricing. The estimate we leave is the invoice you pay. No surprises, no escalation clauses buried in fine print. Call (877) 367-1429 for a free estimate at your Ontario home.
We Also Serve Cities Near Ontario
Our crews work throughout the Inland Empire. If you’re in Ontario or nearby Montclair, Upland, Chino, or Claremont, we cover your ZIP. Our Roof Replacement & Installation team carries the same standards across every city we serve: background-checked technicians, photo-documented inspections, and the 90-Day Done Right Promise.
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
Builder-grade mortar ridge caps installed during the 2005-2010 construction wave weren’t engineered for Ontario’s Santa Ana wind corridor. The Cajon Pass funnels gusts that exceed what Pomona or Chino typically see, and mortar degrades faster under thermal cycling from 160°F summer rooftop temperatures. We replace failed ridge caps with foam-adhered or mechanically fastened systems designed for Inland Empire conditions. Call (877) 367-1429 for a free inspection - we’ll photograph the damage from your roof, not the driveway.
Schedule replacement in spring or fall if possible. Summer installation is harder on crews and materials, and asphalt shingles can scuff if walked on at 160°F surface temperatures. That said, we work year-round and adjust our installation practices for Ontario’s heat. If your roof is actively leaking or showing structural distress, don’t wait. Call (877) 367-1429 and we’ll assess urgency honestly.
Repair makes sense for isolated cracked tiles or single-section ridge cap failure. Full replacement becomes the better value when mortar failure is widespread, underlayment is degraded, or you’re seeing the pattern of cohort-wide failure common in Ontario Ranch tracts. On one street we worked, 30 identical homes needed the same scope. The HOA saved money coordinating block-wide replacement versus individual patch jobs. We evaluate your specific roof and give you both numbers: repair cost and replacement cost. Call (877) 367-1429 for an honest comparison.
Newer Ontario Ranch homes (2005-present) typically have better structural decking and ventilation design, but the builder-grade concrete tiles and mortar ridge caps are a known weak point now entering mass failure. Older homes north of the 60 Freeway often have better-quality original clay tile or earlier-generation asphalt, but decades of 160°F heat and deferred maintenance take their toll. Neither era is automatically superior. What matters is the specific condition of your roof, which we assess with photos you can see yourself. Call (877) 367-1429 to schedule.
R-value applies to insulation, not underlayment. For Ontario’s climate, we specify underlayment rated for high-temperature performance: SBS-modified bitumen or premium synthetic underlayment with 160°F+ service ratings, not standard felt. For attic insulation, California Title 24 requires minimum R-38 in climate zone 10, which covers Ontario. Many older homes fall short. We can assess insulation during replacement and quote upgrade options. Call (877) 367-1429 for specifics on your home.
Ready to talk about your roof? Call (877) 367-1429 now. A live person will answer, day or night, and we’ll schedule your free, no-obligation estimate at your Ontario home. We’ll show you photos from your actual roof, explain what we found in plain language, and give you upfront pricing. If you decide to move forward, we’ll be there when we say, and we’ll stand behind the work with our written 90-Day Done Right Promise. Done right - and if it’s not, we make it right.
Written by Cole Drummond, Owner at Ridgeline Roofing Co. of California, serving Ontario since 1984.