Ontario Roof Pros provides professional roof inspections & moisture surveys in Ontario, CA for residential and commercial properties across the Inland Empire. A warehouse roof is an asset with a service life. The buildings that get twenty-five years from a membrane are the ones looked at twice a year, and the ones that get twelve are the ones nobody visited between leaks.
A commercial inspection produces a numbered roof plan. Every drain, curb, penetration and previous patch is given a number, and the photographs are keyed to it. Next year the comparison is like for like, so you can see whether a detail is deteriorating or holding steady, and a facilities manager who inherits the building inherits something more useful than a folder of invoices from three different contractors.
Wet insulation is invisible from the surface. We find it with infrared scanning after sundown, capacitance readings taken on a grid, and core cuts wherever those two methods disagree. A core is a small patched hole that answers the only question that matters: is this a repair, a section replacement, or a roof at the end of its life? Guessing at that question is what turns a phased budget into an emergency.
Drains get tested rather than glanced at. We flood each one, time how fast it clears, pull the strainer, and confirm the overflow is genuinely open at the height it was designed for. Half of the emergency calls we take in February trace back to a drain that was already full of the same debris in October, and the fix was fifteen minutes of somebody's time. We log clearing times so next year's figures mean something.
Residential inspections are shorter and no less specific. Fastener exposure, boot condition, valley metal, flashing at walls and chimneys, sheathing checked from inside the attic, ventilation counted rather than assumed, and a straight answer on remaining service life for an escrow, an insurer or a solar installer who wants a signature before mounting an array on something we have not looked at.
Everything comes back as a written report with photographs and a priority order: fix now, budget this year, watch. If the roof is in good condition, the report says the roof is in good condition and we go away until you call us. We would rather be the company you trust with the honest report than the one that found four thousand dollars of work on a five-year-old roof.
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 inspections & moisture surveys in Ontario covers
One crew, one point of contact, and the full range of roof inspections & moisture surveys work in Ontario, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- roof inspection
- free roof inspection
- infrared moisture survey
- core cuts
- capacitance moisture readings
- roof plan and condition report
- drain testing
- real estate roof certification
- annual roof maintenance
- commercial roof survey
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 inspections & moisture surveys
The difference between roof inspections & moisture surveys that lasts and roof inspections & moisture surveys 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 inspections & moisture surveys 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 Inspections & Moisture Surveys in Chino, CA — San Bernardino County, population 91,403
- Roof Inspections & Moisture Surveys in Chino Hills, CA — San Bernardino County, population 78,411
- Roof Inspections & Moisture Surveys in Montclair, CA — San Bernardino County, population 37,865
- Roof Inspections & Moisture Surveys in Upland, CA — San Bernardino County, population 79,040
- Roof Inspections & Moisture Surveys in Rialto, CA — San Bernardino County, population 104,026
- Roof Inspections & Moisture Surveys 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 inspections & moisture surveys
Quality here is not a matter of opinion — it is written down. The roof inspections & moisture surveys 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 inspections & moisture surveys 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 inspections & moisture surveys free estimate in Ontario, or request a quote and we'll get right back to you.