Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Replacement Across Montclair
A full roof replacement on a Montclair ranch home typically runs $14,000-$26,000 for architectural asphalt shingles, depending on square footage, decking condition, and tear-off layers. Most jobs take 2-4 working days once the old roof is off and the decking is inspected. If you’ve been patching the same roof for years and it still leaks or loses shingles in every Santa Ana event, call (945) 303-9821 for a written, line-item estimate before any work begins.
We know Montclair’s roof problems because we work on them every week. The 1955-1975 tract homes here have a specific failure pattern tied to the Pomona Valley wind corridor, and we detail every replacement around it. Greg Holloway leads our Roof Replacement crews that serve Montclair from the Inland Empire office, and when you call, a live person answers, day or night, even on weekends.
Key Takeaways for Montclair Homeowners
- A full architectural shingle replacement in Montclair runs $14,000-$26,000, with tear-off and decking repair often driving the difference between bids.
- East-facing roof planes fail first here. Santa Ana winds hit them straight on, so we detail ridge caps, hip tiles, and starter strips on the windward side before anything else.
- Montclair sits in San Bernardino County, not LA County. Permits come from San Bernardino County, and we pull them for every replacement.
- You get a written price before any work starts, plus a written guarantee on the full replacement: 365 days, documented, no fine print.
- Every call is answered by a person, 24/7. Not a voicemail box. Not a callback queue.
Why Tilehurst Roofing Is Montclair’s Preferred Roof Replacement Company
Tilehurst Roofing is a member of the Kingswell family of roofing companies, founded in 2000, and every location runs on the same rules: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. Montclair homeowners who call us are usually done with the other way of doing things, the no-show, the price that changes at the door, and the patch job that lasts one winter.
Our crews serve Montclair locally, and we schedule around the streets we know well: the Pomona Valley tract grid near Monte Vista Avenue, the ranch homes off Ramona Avenue, the hillside lots below the L.A. County line. The permitting split matters here more than in almost any city we work. One side of a street can fall under San Bernardino County rules while the house across the way sits in LA County jurisdiction. We know which side we’re on before we write the estimate.
The guarantee is where we earn the call. Every roof replacement comes with the Kingswell 365-Day Done Right Promise: if it’s not done right, we make it right, for a full year after the job. That promise is written, not spoken. You have it in your hands before a single shingle is nailed down.
Asphalt Shingle Roof Replacement in Montclair
Asphalt Shingle Roof Replacement is the most common full-roof job we do in Montclair, and the right choice for most of the 1955-1975 ranch homes in the tract grid. Most Montclair homeowners choose architectural shingles over 3-tab for one simple reason: the east-northeast Santa Ana winds here chew through 3-tab fast. Architectural shingles carry higher wind ratings and hold their ridge caps and hip tiles longer under repeated uplift. A typical architectural shingle replacement on a Montclair ranch runs $14,000-$20,000 on a 1,200-1,800 sq ft single-story, with 3-tab replacements running a little less and steep-slope or cut-up roofs running higher.
Windward-First Detailing
On a 1968 ranch in the tract grid near Monte Vista Avenue, we tore off three patched layers of 3-tab and found soft OSB decking on the east planes. The Santa Ana winds had been flexing those shingles for fifty years, and the decking underneath gave way under our feet. We replaced the softened sheets, checked every east-facing ridge cap, laid synthetic underlayment over ice and water shield, set new flashing at the penetrations, and nailed architectural shingles to the manufacturer’s high-wind pattern so the field earns its wind rating.
Decking Replacement Is a Budget Variable
When a Montclair homeowner asks how much roof decking replacement adds to the price, we give them a number, not a shrug. Replacing section-rotten or delaminated OSB or plywood decking across a large portion of a ranch roof typically adds $2,000-$4,500 to the job, depending on how many sheets are bad. If the budget is tight, we write the decking scope into the contract as a visible, line-item re-sheet, not a fixed lump “might need it” caveat. You see the sheets before we install them, and the final invoice matches what we found under the shingles.
New Roof Installation in Montclair
New Roof Installation in Montclair usually means one of two things: a complete tear-off and re-roof on an existing 1955-1975 home, or a full roof system on a new build or major addition. The existing-home scenario dominates here, because most of Montclair’s housing stock is now 50 to 70 years old and many roofs have already been re-layered once or twice. Tear-off and replacement on a typical ranch runs $14,000-$26,000. A true new-construction roof where framing, sheathing, and ventilation are all going in fresh runs on the higher end of that range or more, depending on square footage and complexity.
Tear-Off Before Roof-Over
Montclair city code and San Bernardino County building standards generally allow one lay-over on an existing asphalt roof, but most homes here have already used that allowance. Layering a second or third roof over patches traps moisture in the lower layers and hides decking rot until it fails. We recommend full tear-off on nearly every Montclair ranch. You see the decking, we see the decking, and the rot gets fixed instead of roofed over.
Ventilation and Attic Heat
Montclair’s Inland Empire summers push 100°F repeatedly, and a poorly ventilated attic bakes the underside of the shingles as much as the sun bakes the tops. A proper new roof installation here includes balanced ventilation: intake at the eaves, exhaust at the ridge or through box vents, sized to the attic square footage. It adds little to the materials cost and adds years to the shingle lifespan.
Trusted Brands We Service in Montclair
We install and warrant shingles from seven major manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Montclair homeowners dealing with Santa Ana uplift and Inland Empire heat, we frequently recommend architectural lines from GAF, Atlas, and Tamko for their wind-rated nailing patterns and granule retention. We don’t stock one house brand and push it on every roof. The manufacturer is your choice, and our roofers are trained on installation specs for all seven.
Common Roof Replacement Problems We See in Montclair Homes
- East-facing wind damage: Santa Ana winds push through the Pomona Valley from the east-northeast, so ridge caps, hip tiles, and starter strip shingles on east-facing planes fail first. A roof can look fine from the street and be missing half its windward ridge cap on the back slope.
- Hidden decking rot under layered tear-offs: Many Montclair ranches carry two or three patched layers of 3-tab over original OSB or plywood from the 1950s and 60s. Decades of Inland Empire thermal cycling have softened that decking, and the rot stays hidden until the old shingles come up.
- Mismatched flashing and failing sealant: Years of patch-and-repair leave penetrations, valleys, and drip edge with mixed flashing types and dried-out sealant. Each new layer traps moisture instead of shedding it, which is why we replace, not reseal, flashing at every transition on a Montclair replacement.
- Grandfathered lay-overs beyond their useful life: The second layer of shingles on many Pomona Valley tract homes was installed decades ago under older code allowances. The roof may still be shedding water, but the two-layer system is holding heat and moisture at the deck line, shortening what’s left of the structure.
Pricing for Roof Replacement in Montclair, CA
Here’s what you can expect to pay in Montclair, stated plainly. A full tear-off and architectural shingle replacement on a typical 1,200-1,800 sq ft ranch runs $14,000-$20,000. Larger ranches, cut-up roofs, steep slopes, or extensive decking replacement push the job to $20,000-$26,000. A 3-tab re-roof runs about 10-15% less than architectural shingles, but the wind rating drops, which matters in the Santa Ana corridor. New construction or major additions run on the higher end of the range or beyond, because every layer is new.
Every estimate is written and line-itemed before any work begins. The price we give you is the price you pay. Call (945) 303-9821 for a free estimate, and you’ll get a real number, not a range with a shrug behind it.
We Also Serve Cities Near Montclair
Our crews regularly work in Claremont, Ontario, Pomona, and La Verne. If you’re in a neighboring city and need a roof replacement with the same written-price guarantee, call (945) 303-9821 and we’ll schedule the same walkthrough we do in Montclair.
Serving Montclair, CA - Our Local Coverage Area
We’re based in the Montclair 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 Roof Replacement in Montclair
Santa Ana winds funnel through the Pomona Valley from the east-northeast, so east-facing roof planes take the brunt of every wind event. Ridge caps, hip tiles, and starter strips on those slopes get lifted and flexed repeatedly, even while the leeward west slope looks untouched. That’s why we detail the windward planes first on every Montclair replacement. Call (945) 303-9821 for a walkthrough, and Greg Holloway will point out exactly where your east planes are already showing fatigue.
Yes. Montclair sits entirely within San Bernardino County, while its western neighbor Pomona is in LA County, and the permit jurisdiction changes at the city limit. We pull the San Bernardino County permit for every replacement in Montclair and schedule the inspections with the County, not LA. The estimate always includes permit costs and inspection coordination. Call (945) 303-9821 if you want us to verify the jurisdiction on your specific street before you get other bids.
Most commonly, soft or delaminated OSB decking that’s been cooking under multiple layers of shingles for fifty to seventy years. Inland Empire thermal cycling and 100°F-plus summers bake the decking from above and below, and by the time we pull the old layers up, the wood often crumbles where we step. We replace every bad sheet, usually $2,000-$4,500 depending on how far the rot has spread. You see the bad decking before we haul it off. Call (945) 303-9821 for a numbered answer on your house.
Yes, when installed to the manufacturer’s high-wind pattern, which is the standard we use on every Montclair replacement. Architectural shingles from GAF, Atlas, and Tamko carry wind ratings up to 130 mph with the right nailing schedule and starter strip, and we nail them the way the spec says, not the way that saves ten minutes. The extra cost over 3-tab, about 10-15%, buys a roof that stays where it was installed during the next Santa Ana season. Call (945) 303-9821 for a quote on architectural shingles for your specific roof.
Line up the line items. Compare decking scope: one bid should not say “as needed” without a rate per sheet. Compare underlayment: we spec synthetic over ice and water shield, not 15-lb felt. Compare flashing: we replace, not reseal, at penetrations and valleys. Compare wind detailing: ask which nailing pattern the roofer uses on the east planes. And compare the guarantee: ours is written, 365 days, under the Kingswell 365-Day Done Right Promise. Call (945) 303-9821 and we’ll help you read the bids you have, no obligation.
If your Montclair roof is at the age where patching is no longer enough, call (945) 303-9821. You’ll reach a live person, day or night, morning or weekend. We’ll schedule a walkthrough, put the price in writing, and show you exactly what we found under the shingles. The estimate is free, the plan is specific, and the guarantee is in writing before any work starts.
Written by Greg Holloway, Owner at Tilehurst Roofing, serving Montclair and the Pomona Valley.