Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roof Replacement Across Ontario
A full roof replacement in Ontario, CA typically costs between $9,800 and $18,500 for a standard asphalt shingle home, with architectural shingles running $11,200 to $21,000 depending on square footage, pitch, and how much decking needs to be replaced. Most Ontario homes we replace are ready for tear-off and new installation within 1 to 3 working days once materials arrive. You’ll want a roofer who knows How Ontario’s wind patterns and summer heat shape material choices, not someone reading from a national pricing chart.
Crestview Roofing has been doing roof replacement since 2000, and we work across Ontario every week. Crews from our Inland Empire office serve neighborhoods from the 91762 corridor near Ontario Mills up through the 91761 side around the airport. When you call (325) 246-5075, a live person answers. You get a written price before any work starts, and the number on that page is the number on the invoice. That’s the whole point of our Roof Replacement process, and it’s how we operate on every single job in Ontario.
Why Crestview Roofing Is Ontario’s Preferred Roof Replacement Company
Dylan Pace started Crestview Roofing because he was tired of watching homeowners get quoted one price and billed another. That’s why every Ontario job is governed by The Relay Visibility Guarantee, part of who we are as a Relay Home Co. company. You get a written quote before any work begins, photo updates before and after, a live trackable arrival time, and a digital invoice sent to your phone. No arguing after the fact. No surprises at the door.
Our technicians are background-checked and uniformed, so you know exactly who’s climbing onto your roof before they pull up. We run crews in Ontario every week, and we’re familiar with the housing stock here, from the older ranch homes along Euclid Avenue to the newer builds near Ontario Ranch. That local familiarity matters when a roof has three layers of old shingles or when the decking under the existing roof was never built for the wind loads Ontario gets during the Santa Ana season.
Every repair and replacement comes with our 365-Day Done Right Promise in writing. If something fails within a full year, we come back and fix it. No charge, no negotiation, no runaround. It’s included with every job.
New Roof Installation in Ontario
New Roof Installation in Ontario means starting from the deck up, either because the existing roof is beyond saving or because you’re building new. On older Ontario homes, we’re often tearing off two or three layers of shingles, pulling up the old decking, and checking whether the framing can support a modern roof. A new installation in Ontario runs $11,500 to $21,000 for a standard single-story ranch, and $14,000 to $26,000 for a two-story home with a steeper pitch.
Decking and Underlayment Upgrades
Ontario’s summer heat bakes roofs from above, and winter rain tests the seams. We inspect every sheet of decking as it comes off. Rot or warped plywood gets replaced before anything else goes down. Then we install synthetic underlayment instead of felt, because it holds up better against sun and moisture.
Architectural Shingles for Wind and Sun
Most Ontario homeowners choose architectural shingles. They’re thicker than 3-tab, carry wind ratings up to 130 mph when installed to spec, and handle UV exposure better. The nailing pattern matters just as much as the shingle itself, and our crews follow manufacturer specs exactly. That’s what earns the wind rating, not just the product name on the wrapper.
Reroofing in Ontario
Reroofing in Ontario means removing the old shingles and installing a new roof system over the existing decking, assuming that decking is still sound. It’s the most common job we do here, and it typically lands between $9,800 and $16,500 for a 1,500 to 2,200 square foot home. If the decking has gone soft from years of heat and the occasional leak, the price moves up because we’re replacing wood, not just shingles.
Valleys and Flashing Are the Weak Points
In Ontario’s climate, the valleys and flashing are where roofs fail first. We install ice and water shield in every valley and around every penetration, which many lower-priced roofers skip. That’s not an upgrade we suggest; it’s a code and warranty requirement we consider standard.
Ventilation Gets Overlooked
Attic ventilation is a frequent problem in Ontario ranch homes built in the 1960s and 1970s. Without proper ridge venting, heat builds up in the attic and cooks the underside of the shingles. On a reroof, we check the existing venting and often add a ridge vent. It’s a small part of the total cost, but it adds years to the roof’s life.
Trusted Brands We Service in Ontario
We install and repair roofs using manufacturer-backed materials from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. In Ontario, we most often specify GAF and Atlas architectural shingles because of their wind ratings and availability, and we use Boral tile on the occasional tile roof in older neighborhoods near downtown. Because we run crews through Ontario every week, we can get materials staged quickly and handle warranty claims through the manufacturer without making you chase down paperwork.
Common Roof Replacement Problems We See in Ontario Homes
- Standard underlayment in the valleys. Some roofers skip ice and water shield to shave cost. The first decent winter rain finds that seam. We include it on every replacement in Ontario.
- Reused flashing around chimneys and vents. Old flashing corrodes. In Ontario’s dry-heat-and-rain cycle, reusing it saves a few hundred dollars now and costs thousands in leaks later.
- Skipped permits and inspections. Ontario requires a permit for roof replacement. Some crews don’t pull it. If the work fails inspection or wasn’t permitted, the homeowner is the one who gets stuck with code violations and fines.
- Ignoring decking rot under old shingles. By the time shingles are curling from sun and wind, the decking underneath has often started to soften. A roofer who covers over bad decking is selling you a roof that will fail early.
Pricing for Roof Replacement in Ontario, CA
Most roof replacements in Ontario fall between $9,800 and $18,500 for asphalt shingles, with architectural shingles on the higher end of that range. The main cost drivers are squares of material, roof pitch, number of layers being torn off, decking replacement, and whether we’re adding new flashing and ridge venting. A 22-square roof on a single-story ranch near Euclid Avenue recently ran $15,400 with GAF architectural shingles, synthetic underlayment, ice and water shield in the valleys, new flashing, and a ridge vent. That price was written before work started, and it did not change once work began.
You’ll get a line-item written quote before any work starts, so you can see exactly what each material and labor line costs. Call (325) 246-5075 to schedule your free estimate in Ontario. The estimate is free. The price is fixed. The warranty is in writing.
We Also Serve Cities Near Ontario
While this page focuses on Roof Replacement in Ontario, our crews also run jobs in Montclair, Claremont, Upland, and Rancho Cucamonga. If you’re a block east of Euclid or a few minutes north of the 10, we’re already working in your area. The same written-price guarantee applies everywhere we go.
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 Roof Replacement in Ontario
Ontario requires a building permit for roof replacement, and the permit includes a final inspection by the city. We pull the permit, schedule the inspection, and make sure the work passes before we call the job done. You don’t have to handle any city paperwork. Call (325) 246-5075 and we’ll walk you through the exact timeline for your Ontario home.
Crumbling shingles, granules piling up in your gutters, daylight showing through the attic boards, and leaks in more than one spot usually mean replacement, not repair. In Ontario, sun damage shows up as curling and cracking shingles, especially on south-facing slopes. If your roof is past 20 years old and you’re seeing those signs, replacement is cheaper than repeated repairs. Dylan Pace can give you a straight answer on whether your roof is repairable or done. Call (325) 246-5075 for an honest assessment.
Most Ontario roof replacements take 1 to 3 working days once materials are on-site. A straightforward 22-square reroof on a single-story ranch runs about one day for tear-off and one day for install. Steeper roofs, tile removal, or decking replacement add time. We’ll give you a calendar before we start, and you’ll get photo updates as the work progresses.
Architectural asphalt shingles are the best value for Ontario, because they handle both the intense summer sun and the wind loads that come with Santa Ana season. We use GAF and Atlas most often, both with wind ratings up to 130 mph when installed to spec. Tile is also appropriate for some older Ontario homes, but it’s heavier and more expensive. Boral tile is our go-to when a home calls for it.
Yes. If your roof was damaged by wind or storm, we’ll document the damage, provide a written scope of work, and work with your adjuster. We don’t handle the claim for you, but we make sure the paperwork and photos are what the insurance company needs. The estimate we give you is the same number we bill, so there’s no gap between what insurance pays and what you owe. Call (325) 246-5075 to talk through your Ontario claim.
Contact Crestview Roofing in Ontario
If you’re in Ontario and your roof is near the end of its life, don’t wait for the next winter rain to find the seams. Call (325) 246-5075 and schedule a free estimate. You’ll get a written price before any work starts, a live arrival time you can track, and photo proof before and after. That’s the Relay Visibility Guarantee, and it’s how we work in Ontario every week. Ask for Dylan Pace, and you’ll know exactly what the job will cost before you commit to anything.
Written by Dylan Pace, Owner at Crestview Roofing, serving Ontario since 2000.