Southern California
Commercial Roof Inspection and Maintenance in San Bernardino County
San Bernardino County is the largest county by area in the lower 48 states, yet most of its flat commercial roofs sit in a narrow band of the Inland Empire from Chino and Ontario east to Redlands. Our scan reads those wide warehouse roofs from membrane to deck and returns a PE-stamped report within 48 hours.
What kinds of commercial buildings are in San Bernardino County?
San Bernardino County roof stock is led by distribution buildings around Ontario International Airport, many of them 500,000 square feet or more, followed by older industrial buildings in San Bernardino, Colton and Fontana.
Ontario, Rancho Cucamonga, Chino, Fontana and Redlands carry most of the newer logistics space, while Victorville, Hesperia and Apple Valley in the High Desert have added large distribution and manufacturing buildings near Interstate 15.
Fontana grew up around the Kaiser steel mill that closed in the 1980s, and much of that land is now warehouse space. The former Norton Air Force Base in San Bernardino has become a logistics hub around San Bernardino International Airport.
- Ontario airport area: distribution and air cargo buildings around Ontario International Airport
- Fontana and Rialto: warehouses on former steel mill and vineyard land along the 10 and 210
- Chino and Chino Hills: industrial parks and distribution south of the 60
- San Bernardino International Airport area: logistics buildings on the former Norton Air Force Base
- High Desert: Victorville, Hesperia, Apple Valley and Adelanto manufacturing and distribution near the 15
| Building type | Common roof system | Typical age | What San Bernardino County does to it |
|---|---|---|---|
| Cross-dock distribution center | Single-ply TPO | 5 to 25 years | Wind uplift and dock-side debris |
| 1980s concrete tilt-up | Built-up or modified bitumen | 30 to 40 years | Shrinking seams and failed recovers |
| Rancho Cucamonga business park | TPO or PVC | 10 to 25 years | HVAC service traffic |
| High Desert manufacturing building | Spray foam or TPO | 5 to 30 years | Freeze cycles and high wind |
| Older San Bernardino retail center | Modified bitumen | 20 to 40 years | Ponding and patched penetrations |
What does the San Bernardino County climate do to a flat roof?
San Bernardino County roofs face 3 climates: the hot Inland Empire valley floor, the windy mouth of the Cajon Pass and the High Desert, where winter nights drop below freezing.
Valley roofs in Ontario and Fontana bake through long summers above 95 degrees, while Victorville and Hesperia see wide daily temperature swings that expand and contract membranes and flashing. Santa Ana winds pour out of the Cajon Pass into Fontana and Rialto, and those gusts are hard on edge metal and loose membrane laps.
How often should commercial roofs in San Bernardino County be inspected?
A San Bernardino County warehouse roof should be inspected at least 2 times a year, and High Desert or Fontana-area buildings exposed to strong winds benefit from a check after each major wind event.
Many valley warehouses run trucks around the clock, so dock-side debris and roof hatch traffic add wear that a spring and fall scan can catch early. Our commercial roof inspection page explains what each visit covers.
What does a maintenance program cost in San Bernardino County?
A maintenance program for a 500,000 square foot distribution center in San Bernardino County costs $110,000 to $125,000 a year on our Protect program, priced at $0.22 to $0.25 per square foot with a $2,500 minimum.
Protect usually fits San Bernardino County logistics owners, because most buildings are under 25 years old and need routine seam, drain and fastener care. Landlords holding 1980s tilt-ups in Ontario, Chino or Colton often choose Manage to plan the replacements now coming due. Compare all 3 tiers for San Bernardino County on the maintenance programs and pricing page.
San Bernardino County figures use our published rates: Monitor $0.12 to $0.15 per square foot a year with a $1,500 annual minimum, Protect $0.22 to $0.25 per square foot a year with a $2,500 annual minimum, Manage $0.40 to $0.45 per square foot a year with a $4,500 annual minimum.
How soon can you scan a roof in San Bernardino County?
We can scan a roof in San Bernardino County as soon as roof access is confirmed after your request, and a 500,000 square foot distribution center takes about 10 hours at roughly 50,000 square feet an hour, with the PE-stamped report delivered within 48 hours.
Large Ontario and Fontana roofs often fill most of a day, and we work around yard traffic and loading schedules. High Desert scans are planned for calm mornings, since afternoon wind can make roof work unsafe. Book your San Bernardino County scan through our roof scan request form, or compare counties on the service areas page.
Which San Bernardino County cities and business districts do you serve?
We serve all of San Bernardino County, and the 10 cities and districts below are where most of its flat commercial roofs sit.
- Ontario: distribution and air cargo buildings around Ontario International Airport
- Fontana: warehouses on former steel mill and vineyard land
- Rancho Cucamonga: business parks and distribution along the 210 and Foothill Boulevard
- Chino: industrial parks and distribution near the 60 and 71
- San Bernardino: logistics at the former Norton base and older downtown commercial buildings
- Redlands: distribution near the 10 and 210 interchange, plus university buildings
- Rialto and Colton: warehouses and older industrial buildings along the 10
- Upland and Montclair: retail centers and light industrial buildings along the 10
- Victorville and Hesperia: High Desert distribution and manufacturing near the 15
- Apple Valley and Adelanto: newer distribution buildings and industrial parks
San Bernardino County cities issue their own reroof permits, and unincorporated communities such as Bloomington and Muscoy are permitted through the County Land Use Services Department. Valley reroofs must meet Title 24 cool roof requirements, and mountain communities such as Big Bear Lake and Running Springs carry snow load requirements that affect material choices.
FAQs
Do you inspect warehouse roofs around Ontario International Airport?
Yes, the Ontario airport area holds some of the largest roofs we scan, and we cover every city around it. Scans are timed around air cargo and truck schedules.
How do Cajon Pass winds affect roofs in Fontana and Rialto?
Gusts funneling out of the Cajon Pass pull at roof edges, corners and fastener rows. Those zones get extra attention, and any lifted metal or membrane is documented.
Do High Desert roofs need different maintenance than valley roofs?
Yes. High Desert roofs see freezing nights, wider temperature swings and stronger wind, which stress seams and flashing in ways the valley floor does not, so a visit after winter catches that damage early.
Can you scan roofs in Big Bear Lake and other mountain communities?
Yes, we scan flat and low-slope commercial roofs in the mountain communities once the roof is clear of snow, usually from late spring through fall.
What would Manage cost for a 150,000 square foot tilt-up in Chino?
At $0.40 to $0.45 per square foot, a 150,000 square foot roof costs $60,000 to $67,500 a year on Manage.
Are 1980s Inland Empire tilt-ups due for replacement?
Many are on their second or third roof surface. A scan shows whether the insulation underneath is still dry enough to restore instead of replace, and that answer can change the budget by a wide margin.
Do you work on buildings at the former Norton Air Force Base?
Yes, we inspect logistics and aviation buildings around San Bernardino International Airport, including older structures from the base era.
Who permits roof work in unincorporated San Bernardino County?
The County Land Use Services Department issues building permits for unincorporated communities such as Bloomington, Muscoy and Lytle Creek.
Can one report cover our valley and High Desert buildings together?
Yes, one program can rank roofs in Ontario, Fontana and Victorville side by side, each scored on the same 100 point scale.
How long does a roof scan take on a distribution center in San Bernardino County?
A roof scan on a 500,000 square foot distribution center in San Bernardino County takes about 10 hours at roughly 50,000 square feet an hour, and the PE-stamped report follows within 48 hours.
Which San Bernardino County cities do you cover?
We cover flat and low-slope commercial roofs in every part of San Bernardino County, including Ontario, Fontana, Rancho Cucamonga, Chino, San Bernardino, Redlands, Rialto and Colton, Upland and Montclair, Victorville and Hesperia and Apple Valley and Adelanto.
Schedule a non-destructive roof scan anywhere in San Bernardino County.
Trusted since 1983 on over 20,000 commercial roofs. California License 435836.