Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Roofers in Oak Hills, CA
Roofing in Oak Hills demands a different playbook than the rest of the Inland Empire. Sitting 3,000 – 3,400 feet up on the High Desert’s upper slopes, Oak Hills roofs endure a brutal cycle: summer heat that cracks concrete tile and bakes underlayment, followed by genuine winter freeze-thaw events and occasional snow that lower-elevation desert cities never see. We’re Mercer Roofing, and our crews work these slopes regularly, dispatching from our Inland Empire office with technicians who understand why a tile that looks fine from the driveway can hide failed underlayment beneath. Call us at (743) 200-8347 to schedule your free estimate.
Why Oak Hills Homes Are Different
Oak Hills developed as a rural horse-property community from the late 1980s through the 2000s, and that era built the housing stock we see today: single-family homes with concrete tile roofs installed 20 to 30 years ago. Much of that original underlayment has reached or exceeded its service life. The tiles themselves often look intact from the ground, but the waterproofing layer beneath has dried, cracked, or failed completely.
The elevation amplifies every weather stress. UV intensity is higher here than in the San Bernardino valley below. Winter lows dip to genuine freezing multiple nights per season. And the Cajon Pass corridor channels strong wind events straight through, lifting ridge caps and displacing tiles that were set with mortar joints now weakened by decades of freeze-thaw cycling. After every major wind event, we field emergency calls from homeowners who’ve found tiles in their yard or spotted daylight through their ridge line.
Homeowners who moved from coastal Southern California often miss the warning signs. They expect mild, stable conditions and don’t realize Oak Hills experiences a genuine four-season roof environment. By the time water shows on the ceiling, the underlayment has usually been compromised for months.
Our Main Oak Hills Services
Most Oak Hills homeowners call us for one of three needs: stopping an active leak, replacing a roof that’s reached the end of its service life, or installing a new roof on a home build or addition.
Roof Repair in Oak Hills
Repair work here centers on the failure patterns this elevation creates: re-mortaring ridge caps after wind events, replacing cracked concrete tiles, and addressing underlayment failures that show up as mysterious ceiling stains while the tile above looks perfect. We carry common tile profiles and underlayment materials stocked for High Desert conditions, and every repair comes with our written 365-Day Done Right Promise. Roof Repair in Oak Hills

Roofing Company in Oak Hills
As your local roofing company, we handle inspections, maintenance, and full roof replacements with the Threshold Verified standard on every visit: background-checked technicians, photo ID badges at the door, and your technician’s name and photo sent ahead of the appointment. We work with GAF, CertainTeed, Owens Corning, and other manufacturer-recognized brands, and we pull all required permits for Oak Hills projects. Roofing Company in Oak Hills

Roof Installation in Oak Hills
New roof installation in Oak Hills means selecting materials rated for High Desert exposure: concrete tile with proper underlayment systems, wind-resistant fastening patterns for the Cajon Pass corridor, and ventilation designed for the temperature swings at 3,000+ feet. We provide a written, line-item price before any work begins, and we coordinate all permit and inspection requirements. Roof Installation in Oak Hills

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Oak Hills
We install and repair roofs using GAF, CertainTeed, Owens Corning, and IKO products, with common tile profiles and underlayment materials stocked locally for faster turnaround on Oak Hills repair calls. our brands
Pricing for Roofers in Oak Hills, CA
| Service | Typical range in Oak Hills |
|---|---|
| Tile re-mortar (ridge caps, limited area) | $450 – $850 |
| Concrete tile replacement (per tile, standard profile) | $25 – $45 |
| Underlayment repair (localized, tile-off section) | $800 – $1,400 |
| Full underlayment replacement (tile-on, per square) | $325 – $475 |
| Leak diagnosis and minor flashing repair | $350 – $650 |
| Skylight reflash/repair | $400 – $750 |
| Roof inspection with written report | $150 – $300 |
| Complete roof replacement (concrete tile, mid-range) | $18,000 – $28,000 |
| Complete roof replacement (asphalt shingle, mid-range) | $12,000 – $19,000 |
| Emergency tarp and temporary seal | $300 – $600 |
Prices in Oak Hills run toward the higher end of Inland Empire ranges because of the elevation access, the heavier concrete tile common here, and the full underlayment replacements that hidden failures often require. We give you a written, fixed price before any work starts, and that price doesn’t change once we’re on the roof.
Neighborhoods We Serve in Oak Hills
Our crews cover the full Oak Hills area, from the older horse-property parcels near Ranchero Road to the newer developments along Highway 138 and the scattered rural lots off Oro Vista and surrounding roads. Response time is typically same-day or next-day for urgent calls across all areas.
- Ranchero Road corridor
- Highway 138 / Phelan Road area
- Oro Vista and surrounding rural parcels
- Upper elevation properties near 3,400 feet
- Developing areas south toward the Cajon Pass slope
Service Area – Cities Near Oak Hills
While Oak Hills is our focus here, our Inland Empire office dispatches crews throughout the region. We also serve homeowners in Los Angeles, CA, San Diego, CA, San Jose, CA, and San Francisco, CA from our broader Threshold Group network.
Serving Oak Hills, CA - Our Local Coverage Area
We’re based in the Oak Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roofers in Oak Hills
For active leaks, we typically dispatch same-day or next-day depending on call volume and weather conditions. Our Inland Empire office coordinates scheduling, and we carry common Oak Hills tile profiles and underlayment materials to complete most repairs in a single visit. Call (743) 200-8347 to check current availability, estimates are free.
Yes, San Bernardino County requires permits for full roof replacements and most structural repairs in Oak Hills. We pull all required permits and schedule inspections as part of every job, included in your written price. You won’t need to visit the county office.
Many Oak Hills communities have HOA or architectural review requirements for color and material matching, especially in planned developments. We review your CC&Rs during estimation and specify HOA-compliant products from our GAF, CertainTeed, and Owens Corning lines to avoid approval delays.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Oak Hills Customers Say
"Full tear-off and new shingles on our two-story. They covered the landscaping with tarps and ran a magnet over the yard afterward. Didn't find a single nail."
- Karen V."Good roof repair. The crew was a day later than planned because of rain, which I understand, but the scheduling got moved twice. Work itself is clean and has held up."
- Dale T."Replaced the ridge cap and drip edge, and fixed a sagging gutter that nobody else mentioned. Fair price."
- Phil N.






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