Ontario Roof Pros provides professional roof replacement in Ontario, CA for residential and commercial properties across the Inland Empire. Replacement here comes down to one question: can the building keep working while the roof comes off? On a distribution building that answer drives the whole sequence, and on a house it decides how long the framing sits open to the sky.
We phase warehouse work by roof section rather than by calendar. A crew opens one area, dries it in the same day with a temporary termination, and moves on. Racking stays covered, dock doors keep cycling, and nothing is left depending on a night of clear weather the forecast has not earned. Where a tenant cannot take dust or noise during shipping hours, we work the sections furthest from the doors first.
Recover or tear off is decided by cores, not by preference. Code allows one recover over a single existing layer when the substrate is dry and the deck is sound. Two layers, wet insulation, or a rusted steel flute and you are tearing off. We take those cores before quoting, patch them properly the same day, and put the photographs in the proposal so you can see what we saw up there.
On Ontario tract houses, tear-off means every layer down to sheathing, re-nailing the deck to current spacing, and replacing any panel gone soft at a valley or a wall line. Synthetic underlayment goes down with cap nails, rakes and eaves get hand-sealed, and new flashing metal is formed on site rather than reused, because bent metal that came off a roof rarely lies flat on the next one.
What moves the price is access and thickness, not shingle brand. A second-storey roof over a narrow side yard needs a conveyor. A warehouse needs tapered insulation to build fall into a deck that has none, and that taper is often a quarter of the material cost. Both situations cost more than the square footage suggests, and both belong in the estimate rather than in a change order halfway through.
If your roof is under fifteen years old and leaking in one place, replacement is the wrong answer and we will say so. Give us the age, the leak locations and any warranty paperwork, and we will tell you whether this is a repair year or a replacement year, and roughly how many seasons the covering has left either way.
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 roof replacement in Ontario covers
One crew, one point of contact, and the full range of roof replacement work in Ontario, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- roof replacement
- reroof
- tear-off and replace
- recover roof
- new roof installation
- deck re-nailing
- synthetic underlayment
- phased roof replacement
- warehouse reroof
- residential roof replacement
- roof replacement 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 roof replacement
The difference between roof replacement that lasts and roof replacement 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 roof replacement 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.
- Roof Replacement in Chino, CA — San Bernardino County, population 91,403
- Roof Replacement in Chino Hills, CA — San Bernardino County, population 78,411
- Roof Replacement in Montclair, CA — San Bernardino County, population 37,865
- Roof Replacement in Upland, CA — San Bernardino County, population 79,040
- Roof Replacement in Rialto, CA — San Bernardino County, population 104,026
- Roof Replacement 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 roof replacement
Quality here is not a matter of opinion — it is written down. The roof replacement 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 replacement 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 roof replacement free estimate in Ontario, or request a quote and we'll get right back to you.