Roof Replacement in Ontario — Free Roof Inspection, Written Price

Fast, Reliable Roof Replacement Across Ontario

Roof replacement in Ontario, CA typically runs $11,500 to $24,000 for a standard single-family asphalt shingle roof, with concrete clay tile replacement landing between $18,000 and $38,000 depending on square footage and underlayment condition. That’s the real range we quote for this city, not a national average. We’re Bedrock Roof Repair, and Alan Cofield has built our reputation on something simple: we’ll tell you what your roof actually needs before we ever propose a replacement. If a repair solves the problem, that’s what we recommend. If replacement is the honest answer, that’s what we’ll show you, with written line-item pricing so you can see exactly where the money goes. Call (833) 589-7850 for a free estimate from a team that works throughout Ontario, from the 1950s tracts near downtown to the newer subdivisions east of the 15.

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

Ontario isn’t one roofing market. It’s two, split by the Santa Ana River wind corridor and the 10/60 freeway divide. West of Euclid Avenue, we’re working on 1950s and 60s concrete tile hip roofs in the older tracts of 91762 and 91761. East and south, along the warehouse belt in 91764, it’s a different animal entirely. Flat TPO and EPDM membranes over logistics buildings, where the Santa Anas tear at seams and flashing in ways a shingle roof never experiences. Most roofing companies in neighboring Chino or Rancho Cucamonga don’t have to juggle both. We do, every week. That local fluency means our Roof Replacement crews arrive with the right materials on the truck, not guessing after they see the roof.

Our work in Ontario is backed by access to seven major roofing material brands – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. We don’t push one manufacturer. We match material to what your roof faces here: inland heat, Santa Ana wind uplift, and the occasional monsoon thunderstorm that exposes weak underlayment fast. Same team from inspection to final nail, which means the person who walks your roof is the person accountable for the result.

Roof Installation in Ontario

Roof Installation in Ontario means something specific depending on which side of the freeway split your property sits on. For homeowners in the older tracts of 91762, it usually means stripping a 1950s built-up layer or failed comp shingle system and installing architectural asphalt shingles with high-temperature underlayment rated for the Inland Empire’s 100°F-plus summers. For warehouses and distribution centers along the 10 and 60, it means mechanically attached TPO or EPDM over existing insulation, with reinforced perimeter fastening to handle Santa Ana gusts. A full asphalt shingle installation in Ontario typically runs $11,500 to $18,000. Tile installation runs higher, $22,000 to $38,000 for standard concrete clay tile over new underlayment.

Full Replacement Process

We start with a written inspection that documents exactly what’s failing: underlayment condition, flashing points, decking rot, fastener pull-through. Then we strip to the deck, replace any compromised plywood or OSB sheathing, install the underlayment appropriate for inland heat, and lay the new system. Permits are pulled, and the work passes Ontario’s local building inspection before we call the job done.

Material Selection

In Ontario, we lean heavily toward Owens Corning and CertainTeed architectural shingles for residential work because their high-wind ratings hold up under the Santa Ana corridor. For flat roofs in the logistics belt, GAF’s TPO line and IKO’s EPDM membranes have both performed well on the low-slope warehouse structures that dominate 91764. The recommendation follows the job, not a supplier incentive.

Roof Replacement Contractor in Ontario

As a Roof Replacement Contractor in Ontario, we see one failure mode more than any other in residential work: underlayment baked into dust. The inland summer heat exceeds 100°F regularly here, and that heat attacks tile underlayment and asphalt shingle adhesive in a way coastal Los Angeles roofs never experience. A roof that looks fine from the street can be one storm away from a ceiling stain. Replacement here isn’t about curb appeal – it’s about structural timing. A typical asphalt shingle replacement in Ontario runs $13,000 to $24,000 for a 1,800 to 2,600 square foot home, with tear-off and disposal included.

Decking and Underlayment

Roof decking replacement is the hidden variable in almost every Ontario quote. Older 1950s tracts in 91762 often have 1×6 plank decking that’s dry-rotted at the eaves and needs selective replacement. We identify those boards during the tear-off and quote decking replacement per sheet so you’re not surprised by a change order. The underlayment spec matters just as much: we use high-temperature synthetic underlayment that doesn’t degrade under the same heat that breaks down cheap No. 15 felt within a decade.

Flat Roofing

For the warehouse and distribution buildings that line the 10 and 60 corridors through 91764 and parts of 91761, flat roofing is the default, not an option. These low-slope roofs face wind uplift on the leading edges during Santa Ana events and ponding water after heavy winter rains. We specify reinforced seam fastening and verify positive drainage before any membrane goes down. The logistics boom hasn’t slowed, and neither has the demand for flat roof work across Ontario’s industrial belt.

Trusted Brands We Service in Ontario

We work with all seven major roofing material brands – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That matters more in Ontario than in most cities because the market is split between residential tile and shingle work on one side and commercial TPO/EPDM flat roofing on the other. A contractor locked into one brand can’t serve both well. We stock GAF and Owens Corning products locally for the residential tracts, and we keep CertainTeed accessories and IKO membrane supplies available for the flat-roof side of the market. Fast turnaround for Ontario customers, because it’s our market too.

Common Roof Replacement Problems We See in Ontario Homes

• Slipped and broken concrete clay tile after Santa Ana winds. In the 1950s and 60s hip-roof tracts of 91762 near downtown and the Edison Historic District, wind events knock tiles loose from wire attachment points that haven’t been checked in fifty years. Matching tile is often out of production, so we salvage from underlayment-covered spares left by the original builder or source from salvage yards along Holt Blvd.
• Baked-out underlayment and dry rot in older post-war homes. The 91761 and 91762 neighborhoods near downtown carry roofs where summer heat above 100°F has dried the underlayment to a crumble, and winter rains then find their way to the decking. By the time a homeowner sees a ceiling stain, the deck rot is usually wider than the stain.
• Wind uplift at seams and flashing on flat commercial roofs. The logistics-warehouse belt in 91764 and parts of 91761 handles constant truck traffic and rooftop HVAC maintenance. Santa Ana winds flex the membrane at the perimeter, and the seams give way first. Seasonal monsoon thunderstorms expose any weakness fast.
• Tile attachment failures where original wire ties have corroded. On the older concrete tile roofs across Ontario, the original wire fasteners don’t always hold after decades of thermal cycling. We replace those attachment points with stainless steel fasteners during any tile replacement, which is a small material cost that doubles the life of the repair.

Pricing for Roof Replacement in Ontario, CA

We Also Serve Cities Near Ontario

Bedrock Roof Repair handles roof replacement across Roof Replacement in Ontario and the surrounding communities. We regularly work in Montclair and Upland to the north, Chino to the south, and the San Antonio Heights neighborhood to the northwest. Same crews, same inspection-first approach, same straight answer about whether your roof needs repair or replacement. If you’re in one of these areas and your roof is reaching the end of its service life, call us. The free estimate applies everywhere we go.

FAQs About Roof Replacement in Ontario