Fontana Roof Pros provides professional attic & roof ventilation in Fontana, CA for residential and commercial properties across the western Inland Empire. Ventilation is a secondary service in most roofing markets. In Fontana it decides how long the roof lasts, because a shingle bakes from underneath as well as from above, and the attic is the part of the assembly nobody ever looks at.
Nearly every hot attic we open has the same fault, and the fault is intake. Owners buy exhaust — a ridge vent, more turbines, a bigger fan — and the attic still runs hot because nothing is feeding it. Blown insulation has drifted over the soffit vents, the soffit was stuccoed shut in a remodel, or the house never had continuous intake. Exhaust without intake pulls air from the easiest opening, which is usually the conditioned house.
The code supplies the arithmetic. Net free ventilating area of one square foot per 150 of attic floor, reduced to one per 300 where a vapor retarder is present or where 40 to 50 percent of the required area sits high on the roof with the balance at the eaves. Net free area, not hole size — louvres and screen cut a vent's rated opening substantially, so we work from the manufacturer's figure rather than a tape.
So a real ventilation job looks like this. Cut a continuous ridge slot and set an externally baffled ridge vent. Open or add continuous soffit intake along both eaves. Install baffles at every rafter bay so insulation cannot drift back over the intake. Where a hip roof leaves no usable ridge, use high-mounted low-profile vents in a balanced pattern instead.
We argue against powered attic fans and we will do so on your roof. They move air, and they also depressurize the attic enough to pull conditioned air out of the house through recessed lights and ceiling gaps, so the air conditioner works harder replacing it. In a house with a gas appliance in the attic they can pull on a flue.
A balanced passive system does the same work with no electricity and nothing to fail. And if the deck is coming off anyway, add radiant-barrier sheathing: a modest upcharge at the moment the panels are already open, and it drops attic temperature measurably in exactly this climate. Neither of those is a product we make much margin on, which is roughly why they get recommended so rarely.
Our licensed and insured team brings the right materials and equipment to every job — cool-rated architectural shingles, high-temperature SBS-modified underlayment, batten-set concrete tile with a one-inch air space, Kynar 500 PVDF standing-seam panels, heat-welded TPO membrane, reflective elastomeric coating — and backs the work with a written workmanship warranty. We serve Fontana and nearby communities including Rialto, Bloomington, Colton, Grand Terrace.
What We Handle
Everything our attic & roof ventilation in Fontana covers
One crew, one point of contact, and the full range of attic & roof ventilation work in Fontana, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- attic ventilation
- roof ventilation
- ridge vent installation
- continuous soffit intake
- net free ventilating area
- balanced ventilation
- blocked soffit vents
- radiant barrier sheathing
- powered attic fan
- attic temperature reduction
- roof ventilation 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 Fontana services.
Materials, equipment and how we do attic & roof ventilation
The difference between attic & roof ventilation that lasts and attic & roof ventilation that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with cool-rated architectural shingles, high-temperature SBS-modified underlayment, batten-set concrete tile with a one-inch air space, Kynar 500 PVDF standing-seam panels, 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 Fontana 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 western 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 attic & roof ventilation outside Fontana
Fontana Roof Pros covers Fontana and the surrounding communities of the western 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.
- Attic & Roof Ventilation in Rialto, CA — San Bernardino County, population 104,026
- Attic & Roof Ventilation in Bloomington, CA — San Bernardino County, population 24,339
- Attic & Roof Ventilation in Colton, CA — San Bernardino County, population 53,909
- Attic & Roof Ventilation in Grand Terrace, CA — San Bernardino County, population 13,150
- Attic & Roof Ventilation in Loma Linda, CA — San Bernardino County, population 24,791
- Attic & Roof Ventilation in San Bernardino, CA — San Bernardino County, population 222,101
Start on the Fontana Roof Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Fontana Chooses Fontana Roof Pros
- ✓Every estimate names the product and its Cool Roof Rating Council listing, so the reflectance claim is documented rather than asserted
- ✓Inspections include the attic: deck condition, a temperature reading, and net free vent area measured against attic floor area
- ✓Roofs are graded and quoted plane by plane, because the west face here fails years ahead of the north
- ✓We decline shingle coating jobs and hail claims on heat-blistered roofs, and we explain the reasoning in writing
The standards behind attic & roof ventilation
Quality here is not a matter of opinion — it is written down. The attic & roof ventilation work we do in Fontana 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 attic & roof ventilation project in Fontana 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 attic & roof ventilation free estimate in Fontana, or request a quote and we'll get right back to you.