Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Montclair
Roof repair in Montclair usually runs between $350 and $1,800 depending on what’s failing, and most jobs we handle are done in a single day. If you’re noticing water stains on the ceiling or grit from shingles collecting in your gutters, the problem isn’t going to wait. Call (855) 382-1073 and we’ll come out, find the actual source, and give you a written quote before any work starts.
We know Montclair’s housing stock better than most. The tract homes south of the 10, the stucco subdivisions along Monte Vista, the newer infill off Foothill Boulevard – each has its own failure patterns. Our Roof Repair team works across all of them, and we’ll tell you plainly if a patch is enough or if the roof’s structural condition calls for something more.
Why Barnwood Roofing Is Montclair’s Preferred Roof Repair Company
Homeowners in the 91763 keep calling us because we do repairs as a primary service, not as a way to pitch a full replacement. That distinction matters. Plenty of roofing contractors in Montclair won’t even quote a repair because there’s no margin in it for them. We’d rather fix a leak correctly and earn your trust for the day you actually do need a new roof.
Ruben Calloway runs our repair crews, and he’s worked on hundreds of Montclair homes – enough to know what a 1962 tract roof looks like under the shingles before we even pull one off. When we quote a repair, the price holds unless we uncover something structural that no one could have seen from the surface. And if we do, we stop, show you photos, and get your written approval before spending another dollar.
We also offer roof inspection as a standalone service. You can have us assess your roof, walk away with a written condition report, and never hear from us again. No pressure, no upsell. That’s how Ruben built the business, and it’s why Montclair homeowners recommend us to their neighbors.
Styles & brands we work with
Commercial Roof Repair in Montclair
Commercial Roof Repair in Montclair typically means flat or low-slope systems on retail spaces along Foothill Boulevard, warehouses near the 10, and small office buildings tucked into the industrial pockets off Mission Boulevard. These roofs fail differently than residential ones – ponding water after winter rains, split seams from thermal expansion, and membrane punctures from foot traffic or HVAC service.
Most commercial repairs in Montclair run $600 to $3,200, depending on membrane type and damage extent. A simple TPO patch on a 20-foot seam might cost $600 to $900. A larger modified-bitumen repair with flashing replacement can push $2,500. We carry materials for all major commercial systems and stock local inventory so we’re not waiting on a distributor in Ontario for basic supplies.
Flat Roof Patching
Flat roofs collect water, and Montclair’s dry heat accelerates seam separation. We use the right membrane for what’s already installed – no mixing systems that fight each other.
Flashing and Edge Repair
Santa Ana winds work metal flashing loose on commercial buildings just like they do on houses. We inspect drip edges, parapet caps, and curb flashing, replacing what’s compromised so the next rain doesn’t find a way in.
Roof Leak Repair in Montclair
Roof Leak Repair in Montclair starts with finding where water is actually getting in, which isn’t always where the stain shows up on your ceiling. Water travels along rafters and underlayment before it drips. We trace it back to the source – usually a failed valley, a cracked vent boot, or flashing that pulled away at a wall intersection.
Leak repair costs in Montclair run $250 to $900 for most residential cases. A single vent boot replacement is on the low end. A valley rebuild with new underlayment and flashing runs higher. If the leak has been active for months and the decking is soft, you’re looking at structural repair on top of the patch. We quote that separately and get approval before touching it.
Valley Repair
Valleys channel the most water on a hip or gable roof, and on 1960s Montclair tract homes, the original metal is often rusted through. We cut out the old valley, inspect the decking beneath, and rebuild with new flashing and ice and water shield where it matters.
Vent Boot and Flashing Repair
Cracked vent boots are the most common leak source we find in Montclair homes. The rubber bakes hard in attic heat above 140°F and splits. Replacing a boot costs $250 to $400 and takes about an hour on site.
Trusted Brands We Service in Montclair
We work with seven manufacturers, so a repair recommendation isn’t driven by what’s sitting in our warehouse. Around Montclair, that means a lot of CertainTeed architectural shingles on residential jobs, Atlas for heavier wind-rated products, and IKO or Owens Corning when matching an existing roof’s profile from the 1990s is the priority. If your original roof is a specific brand and you’re partial to keeping it consistent, we’ll match it. If a different manufacturer makes a better product for your roof’s slope and exposure, we’ll tell you that too.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Repair Problems We See in Montclair Homes
- Failed shingle adhesives from attic heat. When attic temperatures climb past 140°F for months at a time, the sealant strips on shingles lose their bond. Wind then lifts them, and rain finds the nail holes. We see this most on south-facing roof planes in the 91763.
- Santa Ana wind damage to ridge caps and flashing. That dry autumn wind doesn’t just spread fire risk. It cracks aged ridge caps and works flashing loose along walls and chimneys. By the time winter rain arrives, the roof is already compromised.
- Third-layer overlays hiding rotten decking. Montclair’s mid-century homes often carry two layers of roofing material. Code no longer allows a third. When we open up a roof for what looks like a simple repair, we frequently find decking that needs replacement and wasn’t visible from above.
- Original wood-shake decay from the underside. Shake roofs rot from beneath where the shake contacts the underlayment. By the time it’s visible from the ground, the decking is often affected. Catching this early during a repair can save thousands.
Pricing for Roof Repair in Montclair, CA
Here are the ranges we quote most often for Montclair homes. A shingle replacement patch runs $350 to $700. Leak repair with flashing replacement runs $400 to $900. Valley rebuilds run $800 to $1,400. Flat roof patches run $500 to $1,500 depending on membrane type. Full tear-off of a small section with decking replacement runs $1,200 to $2,800.
What moves the price is whether decking needs replacing and whether code triggers additional upgrades once we open the roof. That third-layer rule catches a lot of Montclair homeowners off guard. We’ll always check your roof’s history before quoting so you know what you’re walking into. Call (855) 382-1073 for a free estimate. We come out, inspect, and give you the number in writing.
We Also Serve Cities Near Montclair
Our crews work throughout the Inland Empire, including Montclair and the surrounding communities. You’ll find us in Claremont, Ontario, Upland, and La Verne on any given week. If you’re nearby and wondering whether we’ll come to you, call and ask. The answer is almost always yes.
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 Repair in Montclair
Yes. Current building code in Montclair does not permit a third layer of roofing over two existing layers. If your 1960s tract home has the original wood shake plus one overlay, any new work requires a full tear-off down to the decking, even if the top layer looks structurally sound. We check layer count during every inspection and tell you upfront if a tear-off is in your future, so you’re not blindsided mid-project.
Montclair sits in a heat bowl and gets less coastal air than Claremont or La Verne. Attic temperatures push past 140°F for months, which cooks shingle adhesive, underlayment, and vent boots. Add the dry Santa Ana season and the occasional heavy winter rain, and you get a cycle of heat fatigue followed by wind stress followed by water intrusion. Call (855) 382-1073 if you want us to assess how your specific roof is handling it.
We inspect first and write allowances into the repair contract for conditions we can’t see until the roof is opened. If we find rotten decking or outdated nailing patterns, we stop, document it with photos, and get your written approval on the additional cost before doing anything. Nothing gets billed that you haven’t approved in writing.
A square is the roofing industry’s unit of measurement – 100 square feet. Every repair quote should tell you how many squares are being addressed and the per-square cost. That detail forces the contractor to show their math. We always quote repairs in square footage, not vague “job” pricing, so you can compare our number against any other roofer’s.
Yes. We repair flat and low-slope commercial roofs across Montclair, including retail properties along Foothill Boulevard and warehouses near the 10. Most commercial patches run $600 to $3,200. We’ll give you a written quote specific to your building’s membrane and damage extent before scheduling work.
Call (855) 382-1073 to schedule your free roof repair estimate in Montclair. Ruben and the team will come out, inspect the roof, and tell you what it actually needs – even if that’s just a patch.
Written by Ruben Calloway, Owner at Barnwood Roofing, serving Montclair and the surrounding Inland Empire.