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
Fast, Reliable Roof Replacement Across Ontario
Roof replacement in Ontario, CA typically runs $9,500 – $18,500 for a standard asphalt shingle re-roof on a 1,400 – 2,200 sq ft home, and most jobs take 3 – 6 days once materials land. That’s the honest range before anyone opens a wall. Your actual number moves based on decking condition, tear-off layers, and whether the city inspector flags wind-uplift nailing upgrades on the older tract homes along the 91761 and 91764 corridors. If your roof is showing curled tabs after the last Santa Ana event or the original sheathing has baked brittle under Inland Empire sun, call Gable Roof Repair at (866) 650-8319 for a free estimate. We’re the Roof Replacement team that works across all seven major shingle brands, and we know Ontario’s wind corridor failure patterns better than most.
Neil Drummond leads our crew, and his rule is simple: inspection first, recommendation second. We don’t open with a replacement quote because that’s the easy upsell. We open with what the roof actually needs, whether that’s a targeted repair, a full re-roof, or a new deck before anything else touches the nail line.
Why Gable Roof Repair Is Ontario’s Preferred Roof Replacement Company
Ontario sits at the mouth of the Cajon Pass, which means your roof fights wind from the side, not rain from above. The roofers who get this are the ones who show up after every Santa Ana event and see the same thing: curled-back shingle tabs on 1970s tract homes off Grove Avenue, blown ridge caps in the 91761 corridor, and decking that crumbles when you pull a fastener. We see it because we work it. Our crew has stripped enough Ontario roofs to know what the original sheathing looks like after 50 years of Inland Empire UV. It’s not a guess with us.
Homeowners in Ontario call us because we don’t hand them a single-brand quote and disappear. We bring seven brands to the table: GAF, CertainTeed, Tamko, Boral, Owens Corning, IKO, and Atlas. The material choice follows the roof’s needs and your budget, not the other way around. That matters in a city where the housing stock ranges from mid-century tract homes to newer infill, and the right shingle for a 1974 build off Euclid Avenue is not automatically the right shingle for a 2015 subdivision north of the 10.
We also separate diagnosis from sale. Roof Replacement in Ontario doesn’t have to start with a replacement pitch. Our roof inspection service is standalone. You can hire us to assess what’s actually failing before anyone talks about materials or cost. Neil Drummond’s position on this: if the roof only needs repair, that’s what we tell you. Repair when it makes sense, replace when it’s right.
Styles & brands we work with
New Roof Installation in Ontario
New roof installation in Ontario is a different animal from re-roofing. It’s for new construction, second-story additions, or a home where the existing roof structure can’t support another layer or has failed completely. On new builds in subdivisions east of Archibald Avenue or additions to older Ontario homes, the scope starts with decking, then underlayment, then the finished surface, all built to the city’s wind-uplift standards. A typical new roof installation in Ontario runs $14,000 – $28,000 depending on square footage, pitch, and material tier.
New Construction and Additions
Ontario’s building department reviews new roof construction for nailing patterns, underlayment specs, and valley details before sign-off, and that review is stricter here than in cities a few miles west. We pull permits, schedule inspections, and build to what the inspector will check. For a new build off Vineyard Avenue or an addition near San Antonio Heights, we coordinate with your framer and GC so the roof package lands when the walls are ready.
Decking That Fits the Wind Zone
New construction in Ontario sits in a wind corridor, so we don’t spec the cheapest OSB and call it done. We verify spans, fastener patterns, and edge blocking against what the city’s plan check requires. If the architect called for a concrete tile finish, we adjust the deck and underlayment spec accordingly. Seven brands, one standard of installation.
Reroofing in Ontario
Reroofing in Ontario is the most common full replacement we do, and it’s the job where our inspection-first approach saves homeowners real money. Reroofing means tearing off the existing shingle or tile layer, inspecting the deck and underlayment underneath, replacing what’s failed, and installing a new roof system over the original structure. On a standard Ontario tract home from the 1960s – 80s, a reroof runs $9,500 – $16,500 with architectural asphalt shingles. If the original sheathing has delaminated and needs full replacement, that adds $2,800 – $5,600 depending on square footage.
Tear-Off, Inspection, and Deck Repair
This is where Ontario homes surprise homeowners. The shingles might look tired but intact, and then the crew pulls a sheet and finds the original underlayment has baked to a crumble and the plywood beneath is delaminating at the edges. We don’t just layer new shingles over that. We replace the failed decking, re-set fasteners to the city’s wind-uplift pattern, and only then lay the new system. That’s the difference between a roof that lasts 12 years and one that fails at the first big Santa Ana event.
Six-Nail Pattern, Inspected Twice
Ontario inspectors check nail counts on re-roofs, specifically in the 91761 and 91764 ZIPs where wind-uplift failures cluster. We set a six-nail pattern on architectural shingles with a matching starter strip along every eave and rake. The inspector checks it. We’re fine with that, because the pattern is what keeps your tabs from curling back the next time the wind funnels through the Cajon Pass.
Trusted Brands We Service in Ontario
We’re certified to install and match six manufacturers across Ontario’s housing stock, including GAF, CertainTeed, Tamko, and Boral. If your 1978 tract home has a specific shingle line that’s been discontinued, we can often source a close visual match from a different brand rather than forcing a full mismatch. That brand-agnostic approach matters in Ontario, where you’ll see concrete tile on some streets and three-tab asphalt on the next block. We stock common colors locally and can usually have specialty lines on-site within a week. Your roof’s job is to protect everything underneath it, and the shingle on top should fit the house, not our supplier agreement.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Ontario Homes
- Wind-lifted and curled shingle tabs along the 91761 corridor. Santa Ana gusts get under the shingle edge and bend it back, breaking the adhesive strip. Once that happens, the next winter rain drives water in at the lifted edge and you’re looking at interior staining before you see the roof problem.
- Brittle original sheathing on mid-century tract homes. Fifty years of Inland Empire UV doesn’t just age the shingles. The plywood underneath dries out, delaminates, and loses fastener grip. If your re-roof crew doesn’t inspect and replace failed decking, you’re paying for a new roof over a failing structure.
- Blown-off ridge caps after high wind events. The ridge line takes the full lateral force of wind coming through the Cajon Pass. Older installations with under-nailed ridge caps fail along that line first, and the exposure opens the attic to direct water entry.
- Failed valley flashing that holds until the first real storm. Ontario gets little rain, so a cracked valley or dried-out flashing can sit unnoticed for months. Then a winter storm hits and the leak shows up in a ceiling corner. We repair or replace valleys as part of any re-roof, and we check them during standalone inspections.
Pricing for Roof Replacement in Ontario, CA
Here’s what we quote in Ontario right now. A standard architectural shingle re-roof on a 1,600 sq ft single-story tract home runs $10,000 – $14,500. A two-story home with steeper pitch pushes that to $13,000 – $18,500. Full deck replacement adds $2,800 – $5,600 depending on how many sheets the crew pulls. Concrete tile replacement, which we see on some older Ontario homes, runs $18,000 – $30,000. These numbers include tear-off, disposal, underlayment, materials, labor, and the city’s re-roof permit. If a bid comes in far below that range, ask what sheathing they’re leaving in place and what nailing pattern they’re using. The answer will tell you whether the price is real or whether the surprise is coming after the roof is open.
Call (866) 650-8319 and we’ll give you a written line-item estimate. No allowances hidden in the fine print. You’ll see decking, underlayment, shingles, flashing, and permit cost as separate lines, so if the deck fails during tear-off, you already know what the replacement cost per sheet looks like.
We Also Serve Cities Near Ontario
We run crews into Montclair, Upland, Chino, and San Antonio Heights throughout the week, and many of our Ontario customers own rentals or family properties in those neighboring cities. If your roof is in one of those areas and you’re already talking with us about an Ontario property, we’ll schedule the work as a combined estimate visit and save you a second trip. Call (866) 650-8319 and tell Neil Drummond’s team which properties you need looked at.
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
Because the original sheathing on Ontario’s mid-century tract homes is often baked brittle and delaminating, which is invisible until the shingles come off. We handle this by writing a per-sheet decking replacement allowance into every Ontario quote, so when the crew opens the roof and finds failed plywood, you already know the cost per sheet and the total moves only if the deck actually needs it. That’s the honest way to bid a re-roof here. Call (866) 650-8319 and ask for a quote with decking allowances written in.
We set a six-nail wind-uplift pattern with a matching starter strip along every eave and rake, and we verify the deck fastening before the underlayment goes down. Ontario’s building department inspects that nailing pattern on re-roofs because wind failures cluster in the 91761 and 91764 ZIPs, and we build to pass that inspection the first time. The ridge cap gets the same treatment, because that’s where lateral wind force does the most damage along the Cajon Pass corridor.
Sometimes, and the only way to know is to pull the shingles and look. On a 1974 tract home off Grove Avenue, we stripped a roof that had already shed tabs and a ridge cap in the last Santa Ana event and found the original sheathing delaminating and underlayment baked to a crumble. We re-decked the bad runs and the roof is sound. On other homes, the deck is fine and only needs localized patchwork. The inspection tells you. That’s why we separate diagnosis from sale.
Line them up side by side: decking replacement allowances, nailing pattern, underlayment spec, shingle brand and line, and whether the permit cost is included. A bid that’s $4,000 lower but excludes decking replacement and uses a four-nail pattern isn’t lower, it’s unfinished. We quote all of that as separate line items in Ontario, so you can hand our estimate to another roofer and ask why theirs is different. Free estimates at (866) 650-8319.
Yes, and this is where working with seven brands helps. If your Ontario home has an asphalt shingle roof that’s been discontinued, we can often source a close match from GAF, CertainTeed, Tamko, or Boral rather than forcing a full replacement over a repair. If you have concrete tile, we match profile and color from the current line. We work with your roof’s brand, not ours, and that matters on a street where every third house has a different material.
If your Ontario roof is showing wind-lifted tabs, a blown ridge cap, or you’re just tired of patching a 1970s original, call Gable Roof Repair at (866) 650-8319. We’ll inspect it first, give you a written line-item estimate, and only recommend replacement if the roof actually needs it.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Ontario, CA and the surrounding Inland Empire.