Architectural shingles
Metal roofing
Tile roofing
GAF
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Montclair
Roof replacement in Montclair typically runs $14,500 – $22,400 for a standard single-story ranch home with architectural shingles, and the tear-off inspection is what really sets the final number. Homes here were mostly built in the 1950s and 60s, and what’s underneath the shingles often changes the scope once we open things up. That’s not a contractor problem. It’s a Montclair housing-stock reality. We’ve torn off enough roofs off Holt Boulevard, around the 91763 zip, and through the tracts north of the 10 to know what to look for before you sign anything.
As a Roof Replacement specialist serving Montclair, we give you written allowances, not vague promises. If the decking is shot, you’ll know what it costs before we touch a single board. Call (866) 650-8319 and we’ll talk through what your roof actually needs.
Why Gable Roof Repair Is Montclair’s Preferred Roof Replacement Company
Montclair customers call us because we lead with an inspection, not a sales pitch. Our name says repair, and we mean it. A lot of the roofs we look at in this city don’t need full replacement. When they do, we’re the company that figured it out honestly, which is why homeowners off Central Avenue and near Montclair Place keep referring us to neighbors.
We don’t carry one brand and push it on every house. We’re certified to work with seven major shingle lines: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means your replacement gets specified for what your Montclair roof actually faces: UV, heat cycling, Santa Ana-driven dust, and low-slope sections that trap debris.
Our three-service setup matters. Roof Inspection is standalone. Roof Repair is separate. Roof Replacement doesn’t get proposed until it’s justified. No hand-offs, no commission-driven upsell. Working with Montclair means understanding the 1×6 skip sheathing behind the fascia on these 1958 – 62 tract builds, not just what shingle color looks nice from the street.
Styles & brands we work with
Reroofing in Montclair
Reroofing in Montclair means tearing off the old layer or layers, opening the deck, and finding out what’s actually under there before any new shingle goes down. A typical reroof on a Montclair ranch runs $13,800 – $21,600, with the spread tied to what the tear-off reveals. If the deck is solid, the job is straightforward. If it’s not, the number moves and you should know why before the dumpster shows up.
Most Montclair homes from the post-war boom have low-slope to moderate-pitch gable roofs. The shingle field usually degrades from heat more than anything else. After 60-plus Pomona Valley summers, the granules are worn thin, the sealant strips are cooked, and the fiberglass mat starts showing through. That’s a replacement, not a repair.
What the tear-off usually reveals
Skip sheathing. Montclair tracts were often framed with 1×6 or 1×8 boards spaced apart, not solid plywood. Cupped boards, gaps between battens, cracked edges at the fascia. You can’t see any of it until the old shingles come off. If the decking is too far gone, we price the re-sheath and get your written approval before we install the new field.
When re-sheathing is required
For homes built before modern nailing schedules, re-sheathing with solid plywood or OSB brings the roof up to code and gives the new underlayment a consistent surface. We include a re-sheath allowance in our Montclair quotes. If we don’t use it, you don’t pay for it. If we do, it was already in writing.
Flat Roof Replacement in Montclair
Flat Roof Replacement in Montclair almost always starts at the rear of the house. The 60s and 70s patio covers and flat-section additions were built with hot-mop or rolled roofing tied into the main shingle field, and that tie-in is where leaks show up first. A flat section replacement on a Montclair patio cover typically runs $6,800 – $12,400 depending on square footage and whether the edge framing or fascia is rotted.
These low-slope sections fail years before the main roof. The sun bakes the rolled material until it cracks. Gutters clog with canyon dust, water backs up at the edge, and the fascia softens. By the time you see a water stain on the patio ceiling, the wood behind the drip edge is usually past saving.
What we do differently at the tie-in
We remove the flat material, inspect the transition where it meets the shingle field, and replace any rotted edge framing before laying the new assembly. On a recent Montclair job, this meant cutting back three feet of failed hot-mop, replacing fascia and drip edge, and running ice and water shield through the valley before we closed the flat section in a Boral-modified rolled assembly.
Why flat and sloped should be done together
If your patio cover is failing and the main shingle field is due, doing both at once keeps the integration clean and avoids a second mobilization. It costs less than doing them two years apart. And it stops the repeating cycle of patching the flat section while the main roof quietly ages out above it.
Trusted Brands We Service in Montclair
We work with every major shingle manufacturer so the material fits your roof and your budget, not our inventory. In Montclair, that usually means specifying GAF or CertainTeed architectural shingles on the sloped field and Boral or Tamko modified rolled assemblies on the flat sections. Multi-brand expertise means our crews know the installation requirements, nailing patterns, and failure profiles across each product line. We don’t stock shingles in your garage. We order per job, per spec, after the tear-off tells us what’s really needed. For Montclair homeowners, that’s the difference between a bid that holds up and one that moves.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Montclair Homes
- Skip sheathing and cupped board decks hidden under second-generation shingles. Homes off Holt Boulevard and throughout the 91763 were framed with board sheathing that warps and cracks over decades of heat cycling. We price a re-sheath allowance in writing so the full scope is known before work starts.
- Failed hot-mop and rolled roofing on low-slope rear patio covers. The 1960s flat additions fail at the tie-in to the main shingle field, long before the field itself shows wear. This is the most common leak point we find on Montclair ranch homes.
- Thermal stress at vents and flashing along low-pitch gables. Intense inland heat expansion loosens sealant around penetrations. Water enters the attic as moisture instead of a visible ceiling stain, which means rot starts before anyone sees a drip.
- Rotted fascia and substrate along roof edges. Decades of drumming sun, Santa Ana dust, and occasional gutter overflow soften the wood at the drip edge. If the fascia is going, replacing shingles alone won’t fix the problem.
Pricing for Roof Replacement in Montclair, CA
You should know what a Montclair roof replacement actually costs before you call anyone. A full tear-off and reroof with architectural shingles on a standard 1,200 – 1,600 square foot ranch runs $14,500 – $22,400. If the tear-off reveals failed skip sheathing, add re-sheathing at $1.80 – $2.60 per square foot. Flat patio cover sections run $6,800 – $12,400, and doing them with the main roof is cheaper than doing them later. These numbers reflect Montclair’s housing stock: post-war framing, low-slope geometry, and boards that don’t always meet modern nailing schedules. Call (866) 650-8319 for a written quote. Our estimates are free, and the number we give you is the number we honor unless the deck tells us something we both need to see first.
We Also Serve Cities Near Montclair
Our Roof Replacement crews cover Montclair and the surrounding Pomona Valley cities. We regularly work in Claremont, Ontario, Upland, and La Verne, often on the same 1950s-60s ranch styles we see throughout Montclair. The housing stock is similar, which means the tear-off surprises are too.
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
Because Montclair homes from the 1950s and 60s were often built with skip sheathing and board decks, and you can’t see the condition of that deck until the old shingles are off. If the boards are cupped, cracked, or spaced too wide for modern nailing, the roof must be re-sheathed before the new underlayment goes down. We handle this by writing a re-sheath allowance into your contract up front. If the deck is fine, the allowance isn’t used and the price doesn’t move. If it’s not fine, the cost was already agreed in writing. Call (866) 650-8319 if you have a quote from another company that doesn’t include this.
Usually yes, if it’s original to the home or shows any sign of cracking, lifting, or water staining. The flat section on a Montclair ranch was built with hot-mop or rolled roofing that fails decades before the shingle field. If you reroof the sloped field and leave the flat section, the tie-in between them stays vulnerable. Replacing both at once also avoids paying for a second tear-off and two mobilizations within a few years. Get an exact number: (866) 650-8319.
Line them up by what’s included: shingle brand and style, underlayment type, ice and water shield location, flashing replacement, re-sheath allowance, flat-section handling, and who pulls the permit. A lower bid that omits the re-sheath allowance on a 1958 Montclair tract is not a lower bid. It’s a bid that will move after the tear-off. Ask each company what their tear-off inspection process is and what their change-order policy looks like in writing. We give both in the contract.
For a reroof, not typically. The permit covers the roof assembly itself: nailing pattern, underlayment, ventilation per the current code in Montclair. It does not require you to rewire the house or upgrade the electrical panel. What it may require is new sheathing if the existing deck doesn’t meet nailing requirements, and adequate attic ventilation to match the new roof system. That’s part of what we assess during the inspection, so you know before the permit is pulled what the city will want to see.
You want a shingle rated for at least 110 mph for most Montclair lots, and 130 mph if your home sits on a higher elevation facing the mouth of a canyon where the winds funnel through. CertainTeed and GAF both make architectural shingles with high-wind ratings and the reinforced nailing patterns to match. The key is proper installation: six nails per shingle on steep or exposed slopes, and starter strips and edge sealing at the gable rake where Santa Ana gusts hit first. We spec the wind rating per home, not a default across the neighborhood.
If your Montclair roof is 20-plus years old, starts acting like it’s older, or you want a straight answer about what a replacement would actually cost, call (866) 650-8319. We’ll inspect it first. The recommendation comes second.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Montclair and the Pomona Valley.