Ontario Roof Pros provides professional commercial & warehouse roofing in Ontario, CA for residential and commercial properties across the Inland Empire. Ontario runs on buildings that cannot close. Fulfilment centers, cold storage, cross-docks and light industrial buildings near the airport all need roofing done around a shift schedule instead of in place of one, and that constraint shapes every decision.
That makes it a planning problem as much as a roofing one. We phase by roof section and by dock activity, dry in each day's work before the crew leaves, keep hot work clear of intakes and product, coordinate any shutdown with whoever owns the rooftop units, and put the sequence in writing so a facilities manager can tell a tenant which week affects which bay.
The systems that suit these roofs are mechanically attached or induction-welded TPO across large simple areas, PVC where exhaust contaminates the surface, and two-ply modified bitumen where service traffic never stops. Attachment density comes from the wind zone and the deck gauge rather than from habit, and on a steel deck we care as much about the fastener's pull-out value as about the membrane over it.
Two details decide how long the roof lasts. Whether the tapered insulation genuinely delivers water to the drains, and how the hundreds of penetrations around equipment, conduit, refrigerant lines and gas piping are supported. Pipe supports on sleepers and pads, never blocks resting directly on the membrane, and walk pads routed along the paths technicians already use to reach the units, because they will take the shortest line whether we pave it or not.
On new work we specify what the warranty requires, register it, and set an inspection interval so it stays valid. Manufacturer warranties are voided quietly: by another trade's penetration, by a coating nobody approved, by drains left blocked through a winter. The paperwork only matters if it survives the tenancy, which means somebody has to own it and read it once a year.
For a landlord with three years left on a lease and a roof with five years left in it, the right answer is a repair budget and a drain retrofit, not a capital project. We quote both, show the arithmetic behind each one, and let the lease term make the decision instead of the sales pitch. Sometimes the honest recommendation is to spend nothing at all this year and revisit it after one more winter.
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 commercial & warehouse roofing in Ontario covers
One crew, one point of contact, and the full range of commercial & warehouse roofing work in Ontario, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- commercial roofing
- warehouse roofing
- industrial roof replacement
- distribution center roof
- cold storage roofing
- phased reroofing
- roof asset management
- NDL warranty
- rooftop unit coordination
- commercial roof maintenance
- commercial roofing contractor
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 commercial & warehouse roofing
The difference between commercial & warehouse roofing that lasts and commercial & warehouse roofing 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 commercial & warehouse roofing 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.
- Commercial & Warehouse Roofing in Chino, CA — San Bernardino County, population 91,403
- Commercial & Warehouse Roofing in Chino Hills, CA — San Bernardino County, population 78,411
- Commercial & Warehouse Roofing in Montclair, CA — San Bernardino County, population 37,865
- Commercial & Warehouse Roofing in Upland, CA — San Bernardino County, population 79,040
- Commercial & Warehouse Roofing in Rialto, CA — San Bernardino County, population 104,026
- Commercial & Warehouse Roofing 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 commercial & warehouse roofing
Quality here is not a matter of opinion — it is written down. The commercial & warehouse roofing 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 commercial & warehouse roofing 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 commercial & warehouse roofing free estimate in Ontario, or request a quote and we'll get right back to you.