Architectural shingles
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Ontario
Roof repair in Ontario, CA means dealing with two forces that never let up: Inland Empire sun that bakes shingles from above, and Santa Ana winds that pry them from the side. Most repairs we handle in the 91761 and 91764 ZIPs fall into predictable categories – curled shingle tabs, blown ridge caps, failed flashing around vents and valleys – but what we find underneath is often worse than what the homeowner saw from the ground. If you’ve spotted missing shingles, water stains on a ceiling, or granules collecting in your gutters, call us at (866) 650-8319. We’ll send a roofer who knows Ontario’s housing stock, not a salesperson with a replacement quote already written.
Why Gable Roof Repair Is Ontario’s Preferred Roof Repair Company
Ontario homeowners call us because we lead with inspection, not replacement. The company name says it: Gable Roof Repair. Our default is an honest assessment of what the roof actually needs, and we’ve built our reputation in Ontario on repairs that hold up against the next Santa Ana event. Neil Drummond leads a team that understands what wind does to a 1970s tract home off Holt Blvd differently than what it does to a newer infill subdivision near the Ontario Mills area. We work with seven major shingle manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – so when we do recommend a material, it’s because it fits your roof’s exposure, pitch, and existing system. Your roof’s brand, not ours.
We serve Ontario directly. No third-party crews, no handoff to a subcontracted crew from outside the Inland Empire. The roofer who inspects your roof is the one who repairs it. That matters when the City of Ontario building department wants to see wind-uplift nailing patterns before closing a permit. We’ve stood next to inspectors on Ontario roofs enough times to know exactly what they’re looking for, and we install to it the first time.
Styles & brands we work with
Commercial Roof Repair in Ontario
Commercial Roof Repair in Ontario typically involves flat or low-slope systems on the warehouse and light industrial buildings that stretch along the 10 freeway corridor through 91761 and 91764. These roofs fail differently than residential shingle roofs. Ponding water after the occasional winter storm, failed seam tape on single-ply membrane, and cracked flashing at rooftop HVAC curbs are the three calls we take most often from Ontario business owners and property managers.
A commercial patch or seam repair in Ontario generally runs $450 to $1,200 depending on membrane type and accessibility. Larger repairs involving edge metal replacement or multiple penetrations land in the $1,500 to $4,000 range. Every commercial job starts with a documented inspection so you see photos of exactly what failed, not a verbal summary.
Flat Roof Patch and Membrane Repair
We work on TPO, PVC, and modified bitumen systems common on Ontario’s commercial stock. The repair involves cleaning the failed area, addressing any wet insulation underneath, and installing a patch that bonds to the existing membrane. Manufacturer warranty coverage depends on the original system brand and whether the previous installer registered it.
Warehouse and Light Industrial Roofing
Ontario’s position as a logistics hub means hundreds of warehouse roofs age in the same brutal sun that cooks residential shingles. We inspect for seam failure, fastener back-out, and UV-degraded flashing before recommending anything. Repair when it makes sense, replace when it’s right. For commercial clients, that means we’ll tell you if a roof has five more years of service life instead of pitching a full replacement you don’t need yet.
Roof Leak Repair in Ontario
Roof Leak Repair in Ontario starts with tracing water back to its entry point, not just patching whatever looks wet on the ceiling inside. Water travels laterally across sheathing, drips along rafters, and shows up feet away from the actual penetration. In older Ontario tract homes, we frequently find that the visible leak symptom – a stain in a bedroom corner, say – traces back to a failed pipe boot or a valley that’s been leaking since the last big rain event.
A minor leak repair in Ontario – replacing a vent boot, sealing a nail pop, patching flashing around a plumbing stack – typically runs $250 to $500. Leaks that involve valley flashing replacement or multiple shingle replacement runs $750 to $2,000 depending on how far the water has traveled and what we find when we open the affected area. If we find rotted decking once we’re in, that changes the scope, and we’ll walk you through it with photos before doing any additional work.
Flashing and Vent Boot Replacement
A surprising number of Ontario roof leaks originate at the small penetrations, not the field of shingles. Pipe boots crack from UV exposure after 8 to 12 years in Inland Empire sun. Chimney flashing pulls away during Santa Ana gusts. We replace these with materials matched to your roof’s age and the manufacturer’s current specifications for proper integration.
Valley and Dormer Repair
Valleys collect the most water and catch the most wind-driven debris. In Ontario’s older tract homes, we often find the original valley metal is still in place but the shingles overlapping it have lifted, creating a channel for water during the next storm. Valley repair means opening the affected section to check the underlayment underneath. That’s where Ontario hides its real problems.
Trusted Brands We Service in Ontario
We’re certified to work with seven major roofing brands, and for Ontario’s wind and UV conditions, we regularly recommend GAF, CertainTeed, and IKO products. GAF architectural shingles with a six-nail pattern rated to 130 mph solve the wind-uplift issue we see on older Ontario roofs. IKO offers strong mid-tier options for homeowners who want quality without premium pricing. Atlas provides solid value tiers for rental properties or homes being prepared for sale. Because we maintain relationships across manufacturers, we’re not pushing one brand’s system. We match material to your roof’s exposure, pitch, and building code requirements in Ontario, and we keep common repair components in local stock so most jobs don’t wait on distributor shipments.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Repair Problems We See in Ontario Homes
- Santa Ana wind-lifted shingle tabs and blown-off ridge caps. Ontario’s position at the base of the Cajon Pass means wind events funnel straight through 91761 and 91764. Curled-back tabs that go unnoticed until the next rain let water reach failed underlayment and begin rotting original sheathing.
- UV-baked underlayment that crumbles when we open the roof. Inland Empire sun cooks 1970s underlayment to the point where it disintegrates on touch. What starts as a simple shingle replacement often reveals felt paper reduced to dust, which means decking exposure and a repair that expands in scope.
- Failed flashing around vents, chimneys, and valleys. Ontario’s dry-season expansion and wet-season contraction cycles stress metal flashing joints. Caulk dries, metal pulls away, and the first real storm after a long dry spell shows exactly where the gaps are.
- Improperly nailed ridge caps and starter strip on re-roofs. When we inspect a roof that’s been re-roofed within the last decade, we often find the previous installer skipped the wind-uplift nailing pattern Ontario’s building department now requires. These roofs fail in the first big gust, and the fix means pulling and re-setting the affected runs.
Pricing for Roof Repair in Ontario, CA
Roof repair costs in Ontario track the age of the housing stock and the severity of wind damage. A straightforward shingle replacement runs $350 to $800. Flashing repair around a chimney or valley lands between $600 and $1,800. Leak repairs involving multiple penetrations or partial decking replacement run $900 to $2,500. Decking replacement, when required, adds $3 to $5 per square foot, and if the City of Ontario requires a permit for the work, those fees add $150 to $400 depending on scope. The factor that moves an Ontario quote most is what we find when we open the damaged section. We write allowances into our contracts for exactly this reason, and we’ll show you the exposed area and get written approval before spending a dollar beyond the original scope. Call (866) 650-8319 to schedule a free inspection and line-item estimate.
We Also Serve Cities Near Ontario
Our Roof Repair service covers Ontario and the surrounding Inland Empire communities. If you’re in Montclair, Upland, Chino, or San Antonio Heights, the same crew that works Ontario roofs serves yours. The wind patterns off the Cajon Pass affect these neighboring cities similarly, and we know their housing stock and building department requirements as well as Ontario’s.
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 Repair in Ontario
Ontario’s dry heat bakes underlayment until it crumbles, which means the sheathing underneath has been exposed to moisture and UV for years without anyone knowing. Original 1970s plywood or OSB decking in tract homes off Holt Blvd and throughout 91761 is often at the end of its service life by the time wind damage forces a repair, and replacing rotted or brittle sections is necessary before new shingles can be properly nailed. We’ll show you the damage before proceeding. Call (866) 650-8319 for an inspection that documents what’s actually underneath.
Ontario’s building department scrutinizes wind-uplift nailing patterns on any re-roof that exposes decking or replaces a certain percentage of shingles. That means the inspector will want to see the fasteners before we close up the roof, and we sequence the work so that inspection happens on schedule, not after the fact. Our crews have stood with Ontario inspectors enough times to install to their standard the first time.
The most common symptom is a water stain on a ceiling that appears days after the wind dies down, because wind-lifted shingle tabs let the next rain find the failed underlayment underneath. In Ontario’s 91761 and 91764 ZIPs, we get a wave of these calls after every major Santa Ana event. If you saw shingles in your yard or heard flapping during the gusts, the leak is already forming. Call (866) 650-8319 for a free roof inspection.
Yes, we repair individual cracked or displaced concrete tile without re-roofing the entire roof. Concrete tile roofs on some older Ontario homes hold up well against UV but crack from impact or get lifted at the edges during wind events. The challenge is finding matching tile, and we source from local suppliers who stock the profiles common in Ontario’s mid-century housing. A tile repair typically runs $300 to $900 depending on how many tiles are damaged and whether the underlayment beneath has been compromised.
We write allowances into our Ontario contracts that specify a dollar range for hidden conditions like rotted decking, outdated wiring near the repair area, or framing that needs reinforcement before we can close the roof. Any surprise is priced and approved in writing before we touch it, with photos documenting what we found. That’s how an inspection-first company keeps a repair quote honest when walls open up. Call (866) 650-8319 for a free estimate built on that principle.
If your Ontario roof is showing signs of Santa Ana wind damage, UV aging, or water intrusion, call Gable Roof Repair at (866) 650-8319. Inspection first, recommendation second. We’ll give you an honest assessment of what the roof actually needs, with a line-item quote you can compare.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Ontario and the Inland Empire.