Roof Replacement in Ontario — Free Inspection, Itemized Written Quote

Fast, Reliable Roof Replacement Across Ontario

Roof replacement in Ontario costs between $11,500 and $28,000 for most homes, depending on size, pitch, and material. We finish most tear-offs and replacements in two to five days, and we’ve worked Ontario’s tract neighborhoods long enough to know which homes need wind-rated fastening before the first Santa Ana event hits. If you’re weighing repair against replacement, or you already know the roof is done, call (877) 588-7942 and we’ll give you a straight answer. Roland Cifuentes built Ridgeway Roof Repair as a roofing-only company for exactly this reason: when you call, you talk to someone who inspects, replaces, and understands Ontario roofs all day, not a general contractor fitting you in between bathroom remodels.

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Why Ridgeway Roof Repair Is Ontario’s Preferred Roof Replacement Company

Ontario homeowners don’t want a sales pitch when they call about a roof. They want to know what failed, what it costs to fix, and whether the next wind event will peel more off. That’s how we operate. Our crews are in Ontario regularly for Roof Replacement work across all four ZIP codes: 91758, 91761, 91762, and 91764. We’re not a multi-service contractor splitting time between plumbing and siding. Every technician, every inspection, every job is roofing, which means we catch what a generalist misses: a ridge cap that’s loose on the east slope, flashing that’s been lifting for years, underlayment that looks intact from the gutter but crumbles when you touch it. Ontario customers routinely tell us the inspection alone changed their decision, because they finally saw what was actually happening up there. Local knowledge matters here, because Ontario’s failure mode is different from Upland’s or Rancho Cucamonga’s. We know that before we even set foot on the ladder.

Roof Installation in Ontario

Roof Installation in Ontario is different from a roof install in a coastal city, and the difference is wind. Ontario sits in the Santa Ana wind corridor, where dry 40 to 60 mph gusts funnel down the Cajon Pass and hit north-facing and east-facing slopes hardest. A proper installation here means the manufacturer’s nailing schedule has to be followed and documented, because the inspector will check it, and your insurer may want the paperwork later. We install full replacement systems on Ontario homes, including tear-off to the decking, new underlayment, drip edge, flashing, starter strip, and the shingle or tile product you choose. For most Ontario homes, a complete roof installation runs $11,500 to $28,000, with asphalt shingle tear-offs at the lower end and tile or high-wind-compliant systems at the upper end.

What the Substrate Looks Like First

On many Ontario homes built in the 1950s through 1970s, the decking itself is a question mark. We’ve seen plywood delaminated from heat, OSB swelling where old leaks went undetected, and rotted sheathing hidden under old tile. That’s why our quotes in Ontario always include decking replacement as a separate line item, priced per sheet, so you know the worst case before we start. If the decking is sound, you don’t pay for replacement, but you should see the line item in the bid regardless. A contractor who doesn’t mention decking hasn’t done many Ontario tear-offs.

Tile, Shingle, or Something Else

Ontario’s housing stock splits two ways: the older core with concrete or clay tile, and the newer tracts with architectural asphalt shingles. We install both, and we’re not tied to one manufacturer’s line. GAF, CertainTeed, and Owens Corning shingles all perform here when installed to the right wind-uplift pattern, and we’ll recommend the one that fits your roof and your budget, not the one sitting in our warehouse. For tile homes, the underlayment is the weak point, not the tile itself.

Roof Replacement Contractor in Ontario

Choosing a Roof Replacement Contractor in Ontario means choosing someone who understands that this city’s roofs fail from uplift, not rain. A contractor who’s only replaced roofs in Orange County or the Valley may not spec the re-fastening that Ontario code enforcement expects on the windward slopes. As a roofing-only contractor, we handle full replacement from start to finish: permits, tear-off, decking assessment, underlayment, drip edge, flashing, vents, and the final pass with you before we call it done. We never hand your job to a subcontractor crew we’ve never met. The people on your roof work for Ridgeway Roof Repair. A full roof replacement in Ontario typically falls between $11,500 and $28,000, and we provide a written line-item quote before any work starts so you can compare it fairly against other bids.

Permits, Inspections, and Documentation

We pull permits for every replacement in Ontario. The inspector checks the nailing schedule, the underlayment, and the flashing, and we hand you the documentation afterward. That paperwork matters when you file an insurance claim after a Santa Ana event. Without it, the carrier can argue the roof wasn’t built to spec and deny or reduce the claim. With it, you have proof the work was code-compliant. That’s not a detail. It’s the difference between a covered claim and a fight.

One Crew, One Accountability

From inspection to repair to full replacement, one company owns the whole thing. If we inspected your roof and found the failed flashing, the same team writes the replacement scope and the same crew installs it. There’s no handoff, no finger-pointing, and no “that was the other contractor’s work.” Roland Cifuentes set the company up this way because roofing failures rarely stay confined to one trade, and Ontario homeowners deserve better than a repair that ignores the root cause.

Trusted Brands We Service in Ontario

We carry and install roofs from GAF, CertainTeed, and Owens Corning, among others, and we stock the fasteners, underlayment, and flashing profiles that Ontario’s wind-rated jobs require. That means we don’t have to order in everything and delay your job by a week. Seven brands. One recommendation. Yours. The right material for your roof, not just what we have in stock. We’ll show you the wind-uplift ratings on the products we’re proposing, so you know the tile or shingle you choose will actually hold on the north slope when the next advisory comes through.

Common Roof Replacement Problems We See in Ontario Homes

• Ridge caps lifting on the east and north slopes. The Santa Anas blast down the Cajon Pass and hit those elevations first. By the time a homeowner notices, several caps are usually gone and the underlayment is exposed. Re-fastening to a wind-uplift pattern is not optional here.
• Baked and cracked tile underlayment. Ontario hits 100°F+ every summer, and that heat doesn’t just bother people. It bakes the underlayment under concrete and clay tile until it’s brittle, then winter rain finds the cracks and drips onto the ceiling. On a 1960s low-pitch gable off the 91762 side of town, our crew found the original underlayment crumbling to dust, with ridge caps already lifting. We stripped it, laid new self-adhered membrane through the valleys and penetrations, re-set the drip edge and starter strip, and re-fastened the tile to a wind-rated pattern. Then we gave the homeowner the nailing schedule and product documents for their insurer.
• Low-pitch gables shingled over failed flashing. Many 1950s and 1960s Ontario homes have gable roofs with a pitch too low for proper water shedding on the flashing. When a previous contractor re-shingles over the old flashing instead of replacing it, the next wind-driven rain pushes water where it doesn’t belong.
• Thermal cycling loosening shingles and flashing long before rain. Ontario’s daily temperature swings are extreme, even by Inland Empire standards. Shingles expand and contract daily, and after a decade or two, the fasteners have worked loose. Rain then finds seams that look fine from the street. A roof that leaks here usually failed months earlier, silently.

Pricing for Roof Replacement in Ontario, CA

We Also Serve Cities Near Ontario

We do Roof Replacement in Ontario alongside the surrounding communities, so if you’re in Upland, San Antonio Heights, Rancho Cucamonga, or Jurupa Valley, the same roofing-only crew covers your neighborhood too. The wind corridor doesn’t stop at the city line, and neither do we.

FAQs About Roof Replacement in Ontario