Roof Replacement in Ontario — Free Inspection, Itemized Written Quote

Fast, Reliable Roof Replacement Across Ontario

Roof replacement in Ontario typically runs $8,500 to $16,000 for a standard single-story composition shingle roof on a 1950s to 1970s tract home, with larger two-story or steeper roofs landing between $14,000 and $24,000. Those numbers climb when the tear-off exposes rotted decking, failed flashing, or layered shingle stacks that require full removal down to the sheathing. Most Ontario jobs take one to two weeks from permit pull to final inspection, depending on what the deck reveals once the old layers come off.

Call (833) 467-4901

We work across Ontario’s ZIP codes – 91758, 91761, 91762, 91764 – from the post-war ranch homes south of Holt Boulevard to the warehouse corridor along 91761. If you’re staring at cracked shingles, lifted ridge caps, or a leak that showed up after the last Santa Ana wind event, call (833) 467-4901 to schedule a roof inspection. We inspect first, recommend second, and never quote a replacement without walking the roof ourselves.

Neil Stratton, owner at Huntington Beach Roofers, has built our reputation on a simple rule: we open up a roof before we price the job. That’s how you avoid the surprise that hits when four layers of nailed-over shingles come off and the deck underneath turns out to be the real problem. Our Roof Replacement team handles the whole cycle – inspection, tear-off, decking, underlayment, and installation – without handing you off between subs.

Why Huntington Beach Roofers Is Ontario’s Preferred Roof Replacement Company

Seven brands. One contractor. We’re authorized to install roofing products from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – which means the material recommendation follows your roof’s needs and your budget, not whatever single brand happens to be sitting in a warehouse. In a market like Ontario, where one contractor might push a specific shingle because it’s all they carry, our Roof Replacement in Ontario approach starts with the roof’s actual condition and the local climate it has to survive.

We know Ontario’s housing stock the way only a contractor who’s worked it for years can. The 1950s and 1960s tract homes around downtown and south Ontario carry original composition shingles that have been re-covered layer over layer for decades. Newer stucco production homes further out in 91761 and 91762 have different decking conditions and pitch profiles. And the industrial flat-roof buildings along the 91761 warehouse corridor need a completely different membrane approach. Having all three service stages – inspection, repair, replacement – under one roof means you’re not explaining your house to three different crews.

Ontario homeowners call us because we’re honest about what a roof needs. Repair or replace – we’ll tell you which one actually makes sense. When a roof has ten years left, we say so. When it’s done, we show you the cracked seals, the granule loss, the soft decking underfoot. The standalone roof inspection we offer isn’t a sales tool; it’s a diagnostic. You can hire us to inspect your roof and never owe us a dime toward replacement work unless you decide you want the job done.

Roof Installation in Ontario

Roof Installation on an Ontario home means a full system replacement: tear-off to the deck, decking repair where the sheathing has swelled or rotted, new underlayment, ice and water shield at the valleys and eaves, a fresh starter strip, the shingle field, ridge caps, and ventilation. It’s not a shingle swap. On a 1950s ranch near downtown, we’re routinely pulling permits and finding three or four layers of composition nailed over the original roof – and all of it has to come off before new material goes down. That’s also when homeowners discover the decking needs work.

On a 1956 single-story ranch near downtown Ontario, our crew pulled the permit for a full tear-off and found four layers of composition shingles stacked over the original decking, plus soft spots where old flashing had failed at the valleys. We stripped to the deck, replaced the rotted sheathing, and laid new underlayment and ice and water shield before setting CertainTeed architectural shingles with a fresh starter strip and ridge vent. The homeowner saw the extra decking cost priced and approved in writing before we nailed a single square.

For a typical Ontario ranch built between 1955 and 1975, a full tear-off roof installation runs $9,000 to $15,000 for the shingle system, with decking replacement adding $2 to $4 per square foot on top depending on how much sheathing has to be swapped. Newer production homes in 91761 or 91762 often have healthier decking and land in the $8,500 to $12,500 range for the same architectural shingle roof.

Decking Replacement as Standard Practice

We don’t lay new shingles over questionable wood. Once the old material is stripped, our crew walks the deck and marks every soft, cracked, or water-damaged sheet. Ontario’s summer heat bakes decking for decades; when shingle layers have trapped moisture against the wood, that sheathing crumbles underfoot. We price the replacement allowance into the contract and walk you through it before a single sheet is cut.

New Construction Roofing

For Ontario’s newer subdivisions and infill lots, we also handle new construction roof installation from bare trusses through final shingle. The permitting sequence is different – no tear-off, but still full inspection at every stage. Architects and GCs in the 91764 and 91761 areas bring us in for material selection early so the roof system matches the building’s engineered load calculations from day one.

Roof Replacement Contractor in Ontario

A Roof Replacement Contractor in Ontario has to handle two very different building types: the aging residential stock of the post-war core and the flat-roof commercial warehouses that line the 91761 corridor. Most smaller SoCal cities lean one direction or the other. Ontario doesn’t. We routinely run residential re-roofs on single-story gable ranches one week and a TPO membrane replacement on a distribution center roof the next. That combination isn’t typical – and it means our crews understand both sloped shingle systems and flat commercial membranes at a depth you won’t get from a residential-only shop.

For Ontario homeowners, the key decision point is whether the roof needs a full tear-off and what the deck reveals once it’s open. We don’t do cosmetic overlays on homes with multiple shingle layers already stacked. A permit pulled in Ontario means the old layers come off down to the sheathing – city code won’t accept a third or fourth nail-over on top of an already-layered roof. If you’re getting quotes and one contractor says “we can just go over it,” ask them what the Ontario building inspector will say. We already know the answer.

Tear-Off and Full System Replacement

Every Ontario re-roof we quote starts with a physical inspection, then a line-item contract that separates the shingle system from the decking allowance. When the tear-off exposes more rotted wood than the allowance covers, you approve the change order in writing before we go a square further. No handshake change orders, no surprise invoice at the end.

Santa Ana Wind Season Preparation

If your roof is ten years old or more along the older tracts of south Ontario, the next Santa Ana event is a matter of when, not whether. Dried-out seals and cracked tabs on low-pitch 1950s gables lift in a single afternoon. We see it every fall. A pre-season inspection catches the weak spots before the wind does.

Trusted Brands We Service in Ontario

We carry and install across a range we believe is the widest in the trade: GAF, CertainTeed, Owens Corning repair in Ontario, IKO, Atlas, Tamko, and Boral. For an Ontario homeowner, that matters in practical ways. If a specific CertainTeed color is backordered and your HOA needs the roof done before escrow closes, Atlas architectural shingles in a matching tone are available that week. If your insurance adjuster requires brand-specific product documentation for a claim in the 91762 area, we can produce it. If the warehouse roof in 91761 needs a Boral tile profile to match the original spec, we’re authorized to source it. Match the material to the roof, not the other way around.

Common Roof Replacement Problems We See in Ontario Homes

• Nailed-over shingle stacks hiding soft decking. Three or four layers of composition shingles are common on the original tract homes south of Holt Boulevard. The weight should have triggered a tear-off decades ago, but the nail-over culture ran deep. When we strip those layers, the deck underneath often has rot at the valleys and eaves from trapped moisture that never had a chance to dry in Ontario’s low-rain climate.
• UV-cracked shingles that fail before they look worn. Ontario’s intense Inland Empire sun degrades asphalt shingles from the inside out. Seals release, tabs curl, and granule loss accelerates years before the roof looks obviously bad. A homeowner sees a roof that “still looks fine” – we see a roof that lost its waterproofing seal three summers ago.
• Santa Ana wind damage on low-pitch gables. The 1950s ranch profile with wide gable overhangs catches wind exactly where the ridge cap and starter course meet. When seals are dried out, a single sustained wind event can peel tabs back in sheets across an entire south-facing slope. We see the same failure pattern every fall across the older Ontario tracts.
• Flat-roof membrane failure on the 91761 warehouse corridor. TPO and modified-bitumen roofs take full sun exposure with zero shade relief from Ontario’s industrial landscape. Thermal cycling splits seams and opens flashings at the parapet walls. These roofs don’t leak like residential roofs – they fail in wide, expensive sections that only show up after a heavy rain event.

Pricing for Roof Replacement in Ontario, CA

We Also Serve Cities Near Ontario

Our crews work across the broader Inland Empire, and we regularly handle roofs in Ontario plus the surrounding communities of Montclair, Upland, Chino, and San Antonio Heights. If you’re in one of those cities and need the same inspection-first approach, call (833) 467-4901 and ask for Neil.

FAQs About Roof Replacement in Ontario