Ontario Roof Pros provides professional roof repair in Ontario, CA for residential and commercial properties across the Inland Empire and the eastern San Gabriel Valley. Half the repair calls we take in this city are on a low-slope section rather than a pitched field, and the two want completely different answers. A membrane patch is not a scaled-down version of a shingle repair.
On a membrane the question is always what share of the section you are touching. A puncture, a split seam, a failed curb flashing or a pitch pocket that has dried out is a repair, and a clean one. Once the failures are spread across the whole section, patching becomes a maintenance subscription and a recover or replacement is the cheaper purchase over any horizon you care about.
On the pitched parts the list is ordinary. Tabs lifted by a Santa Ana run and creased where they folded, a boot gone hard and split at the collar, pipe flashing lifted at the upslope edge, cracked ridge cap, an old satellite penetration left open to the sky.
The test we apply to a pitched repair is the membrane test scaled down. How much of this plane are we touching, and is what we leave behind going to outlive the patch we put in. Where the answer to the second half is no, the repair is a payment on account toward a roof you are going to buy anyway, and we would rather say that now.
Our license classification shapes what we will and will not take on, which is worth stating on a repair page. The C-39 covers what seals, waterproofs and weatherproofs the structure and reaches edge metal and skylight curbs as work incidental to the roof. Interior repairs past that belong to a different classification and we say so rather than stretch ours across them.
On the permit, California building divisions exempt small repairs and require a permit for a reroof, and the figure that recurs on city handouts around the state is one roofing square or ten percent of the roof area, whichever is smaller. We have not seen that printed as this city's own number, so we ask the building department for the address. Replacing sheathing puts you in permitted work regardless.
Where a repair is the wrong buy we say it. A field that has lost granules on every plane, or a section already carrying two coverings, will fail somewhere new within the year, and the repair money would have been a down payment on the thing you actually need. We will quote that instead, with a written workmanship warranty, and let you choose between two real numbers rather than one and a hope.
Our insured and bonded team brings the right materials and equipment to every job — tapered polyisocyanurate built to a quarter-inch-per-foot fall, hot-air-welded PVC with a KEE plasticizer, tested ANSI/SPRI ES-1 edge metal and coping, two-ply SBS modified bitumen set in cold adhesive, retrofit drains sleeved into existing cast-iron leaders, walk pads routed between rooftop units — and backs the work with a written workmanship warranty. We serve Ontario and nearby communities including Chino, Chino Hills, Montclair, Upland.
What the Work Includes
Everything our roof repair in Ontario covers
One crew, one point of contact, and the full range of roof repair work in Ontario, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- roof repair ontario
- low slope roof repair ontario
- roof repair san bernardino county
- membrane patch repair ontario
- roof repair
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Ontario services.
Materials, equipment and how we do roof repair
The difference between roof repair that lasts and roof repair that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with tapered polyisocyanurate built to a quarter-inch-per-foot fall, hot-air-welded PVC with a KEE plasticizer, tested ANSI/SPRI ES-1 edge metal and coping, two-ply SBS modified bitumen set in cold adhesive, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Ontario job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of roofing work in the Inland Empire and the eastern San Gabriel Valley means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do roof repair outside Ontario
Ontario Roof Pros covers Ontario and the surrounding communities of the Inland Empire and the eastern San Gabriel Valley. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Roof Repair in Chino, CA — San Bernardino County, population 91,403
- Roof Repair in Chino Hills, CA — San Bernardino County, population 78,411
- Roof Repair in Montclair, CA — San Bernardino County, population 37,865
- Roof Repair in Upland, CA — San Bernardino County, population 79,040
- Roof Repair in Rialto, CA — San Bernardino County, population 104,026
- Roof Repair in Colton, CA — San Bernardino County, population 53,909
Start on the Ontario Roof Pros homepage for a free estimate, or call (866) 875-9250 and describe the job.
Why Ontario Chooses Ontario Roof Pros
- ✓Core cuts and moisture readings before any recommendation, so the scope is based on evidence rather than a walk-around
- ✓Warehouse and industrial work phased by roof section, with every day's area dried in before the crew leaves
- ✓Proposals name the membrane thickness, insulation, fastening pattern and edge detail, so bids can actually be compared
- ✓We quote the repair beside the replacement and recommend the cheaper one when it is the honest answer
Want a written roof repair estimate in Ontario?
Call (866) 875-9250 or send the short form — no pressure, same-day reply on most requests.
The standards behind roof repair
Quality here is not a matter of opinion — it is written down. The roof repair work we do in Ontario follows published industry standards: NRCA publishes the Roofing Manual, the industry's reference for details and slope minimums, and Asphalt Roofing Manufacturers Association sets the shingle application and ventilation guidance the warranties reference. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every roof repair project in Ontario gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (866) 875-9250 for a free roof repair free estimate in Ontario, or request a quote on our contact page and we'll get right back to you.