Ontario Roof Pros provides professional asphalt shingle roofs in Ontario, CA for residential and commercial properties across the Inland Empire. Shingles cover most houses in this city, and the mistake we correct most often is shingles installed somewhere they do not belong: a low-pitched addition, a patio tie-in, a converted porch with barely any fall across it at all.
Below four in twelve, shingles need doubled underlayment. Below two in twelve they are outside their listing entirely and the right product is a membrane. We would rather change the system on one small area, and price a tidy metal transition into the pitched field above it, than warranty a slope that physics is going to win eventually. That conversation costs you nothing now and saves an argument in the first wet January after the work is done.
On the pitched field, this valley's summer surface temperature is the ageing clock. Laminated architectural shingles with strong granule adhesion, a working ventilation path and a lighter color all buy years, which makes color a durability decision here rather than only a matter of taste. A rated cool-roof shingle is worth asking about on any slope facing west, where the afternoon sun does most of the damage in July and August.
Detailing decides how long that field lasts. Six nails in the nail zone with none driven high, starter course at rakes and eaves, metal in the valleys instead of woven asphalt, drip edge under the underlayment at the eave and over it at the rake, and step flashing with counterflashing where the roof meets stucco rather than a bead of sealant smeared across the joint.
Repairs are practical work. Matching a discontinued color is usually acceptable on a rear slope and never invisible from the street, so we tell you which one you have before starting rather than after. We also keep salvaged bundles from your own tear-off when the layout allows it, which makes the repair five years from now considerably easier and cheaper for whoever owns the house then.
Shingles stay the honest default for pitched roofs in Ontario: predictable cost, quick installation, easy repair, and a supply chain that has not stopped once in the time we have worked here. Our advice is to spend the difference on underlayment, ventilation and flashing metal rather than on the top shingle line in the brochure, because the details are what fail first. Expensive shingles over cheap flashing metal is a false economy.
Our licensed and insured 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 We Handle
Everything our asphalt shingle roofs in Ontario covers
One crew, one point of contact, and the full range of asphalt shingle roofs work in Ontario, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- asphalt shingle roof
- architectural shingles
- laminated shingles
- shingle replacement
- low slope shingle limits
- cool roof shingles
- starter course
- valley metal
- step flashing
- shingle roof repair
- asphalt shingle roof cost
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 asphalt shingle roofs
The difference between asphalt shingle roofs that lasts and asphalt shingle roofs 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 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 asphalt shingle roofs outside Ontario
Ontario Roof Pros covers Ontario and the surrounding communities of the Inland Empire. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Asphalt Shingle Roofs in Chino, CA — San Bernardino County, population 91,403
- Asphalt Shingle Roofs in Chino Hills, CA — San Bernardino County, population 78,411
- Asphalt Shingle Roofs in Montclair, CA — San Bernardino County, population 37,865
- Asphalt Shingle Roofs in Upland, CA — San Bernardino County, population 79,040
- Asphalt Shingle Roofs in Rialto, CA — San Bernardino County, population 104,026
- Asphalt Shingle Roofs in Colton, CA — San Bernardino County, population 53,909
Start on the Ontario Roof Pros homepage for a free estimate, or call (844) 511-2320 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
The standards behind asphalt shingle roofs
Quality here is not a matter of opinion — it is written down. The asphalt shingle roofs 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 asphalt shingle roofs 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 (844) 511-2320 for a free asphalt shingle roofs free estimate in Ontario, or request a quote and we'll get right back to you.