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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 Repair Across Glendora
Roof repair in Glendora runs between $350 and $1,900 for most residential jobs in 2026, with leak repairs starting around $350 and full slope rebuilds climbing toward $1,900 when sheathing gets involved. A typical shingle replacement on a Glendora home lands between $450 and $850. We work in the 91740 and 91741 ZIP codes every week, and because Glendora sits right at the base of the San Gabriel Mountains, we know exactly what the sun, wind, and fire-zone codes do to roofs on the foothill edge. Our Roanoke and South Hills neighborhoods, up toward the wildland boundary, get hit harder than the flats closer to Foothill Boulevard. When you call, you’ll talk to someone who knows the difference between a wind-scoured west slope off Sierra Madre Avenue and a simple loose shingle down near the 210. Call (866) 942-4187 to get someone out to look.
Why Orange County Roofing Co Is Glendora’s Choice for Roof Repair
Kurt Hensley built Orange County Roofing Co on a simple idea: carry more brands so you never have to sit through a one-brand pitch. We stock and install Atlas, Tamko, Boral, GAF, CertainTeed, Owens Corning, and IKO. That means when we tell a Glendora homeowner their south-facing slope needs a heavier architectural shingle, we recommend it because the exposure demands it, not because it’s the only product on our truck. From a single damaged shingle to a full tear-off and replacement, one call covers it.
For homeowners in Glendora’s fire-wildland interface, this brand-neutral approach matters more here than almost anywhere else in the San Gabriel Valley. Your repair may need to meet Class A fire-rated assembly requirements, and different manufacturers carry different Class A lines. We walk you through which ones your insurance carrier will accept and which fit your budget. Our Roof Repair team understands that a patched slope in the 91741 foothills isn’t the same job as a patched slope in Azusa.
We also do inspections as a standalone service. After a Santa Ana event or a heavy winter storm, you don’t have to commit to a repair just to get a real diagnostic. Our inspection tells you exactly what your roof needs, nothing more. That matters when you’re deciding whether to repair or replace and don’t want to be sold something you don’t need yet.
Styles & brands we work with






Metal Roof Repair in Glendora
Metal Roof Repair in Glendora usually means fixing a standing-seam or corrugated metal panel that’s loosened at the fasteners, a penetration boot that’s dry-rotted, or a seam that’s separated and letting water through. Many of the larger foothill homes off Sierra Madre and up toward the 91741 side have metal sections on additions, patio covers, or the main house itself. We handle all of it.
Fastener and Seam Repairs
A loose fastener on a metal roof in the foothill wind exposure zones is more than a telltale drip. The Santa Anas work metal hard, backing fasteners out over years and widening the panel hole. We replace the fastener with a proper gasketed screw, seal the seam, and where the panel has worked too much, we install a wider fastener or add a clip.
Replacement of Curbs and Flashings
Skylight curbs and vent flashings on metal roofs rot from the inside. Intense inland sun turns the rubber boot brittle faster than coastal homes ever see. We pull the old boot, inspect the metal beneath, and set a new one sealed with a high-temp sealant that handles Glendora summer heat.
Commercial Roof Repair in Glendora
Commercial Roof Repair in Glendora covers flat and low-slope buildings along Route 66, the industrial pockets near the 210, and the shopping centers and medical buildings spread through both ZIP codes. Modified bitumen, TPO, and older built-up roofs all show their own failure modes here, but the common thread is drainage. Our crew regularly finds clogged scuppers and failed seams where ponding water works into the membrane over time.
Flat Roof Patches on Commercial Buildings
We locate the breach, cut out the damaged membrane, dry the substrate, and apply a patch matched to the roof type. No shortcuts on surface prep. A patch on a ponding TPO roof off Foothill won’t hold if we don’t fix the slope or the drain. We address the source, not just the symptom.
Seam and Drip Edge Replacement
Open seams along parapet walls and failed drip edge at the roof’s perimeter are two of the most common findings on Glendora commercial inspections. We strip the old sealant, re-secure the membrane, and set new termination bar and sealant to stop water from walking backward under the membrane. It’s methodical work, and it keeps a small leak from becoming a full roof replacement.
Trusted Brands We Service in Glendora
We carry seven major brands so you choose the roof that fits your home and budget, not ours. From Atlas and Tamko to GAF and Boral, we can match the right product to your slope, your sun exposure, and your fire-zone requirements. Because we run a full material yard near Corona and stock parts for the common Glendora repairs, turnaround times stay short. You aren’t waiting two weeks on a special order when your ridge cap is flapping after a wind event. The right material for your roof, backed by the manufacturer’s own warranty.
See the difference
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After
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AfterCommon Roof Repair Problems We See in Glendora Homes
- Granule-starved south and west slopes: The inland San Gabriel Valley sun bakes shingles until they shed granules and look thin. They don’t leak yet, but a Santa Ana wind will lift what’s left and expose the underlayment beneath.
- Dry-rot at the fascia and soffit: UV and seasonal runoff work the roof edge hard. A small flashing repair becomes a decking and trim replacement once the edge is opened.
- Wind-worked penetrations and ridge caps: When the Santa Anas come down through the foothill canyons, the first things to go are vent boots, pipe collars, and ridge caps. These are the small leaks you notice as a ceiling stain weeks later.
- Code-driven upgrades in the fire zone: In the wildland interface, a like-for-like patch on a failed slope is often rejected at permit time. The city wants Class A fire-rated assembly and ember-resistant detailing, and if your original bid didn’t plan for it, the price moves.
Pricing for Roof Repair in Glendora, CA
Here’s what we see in Glendora right now. A minor shingle replacement runs between $350 and $850 on a standard 3:12 to 5:12 pitch. A straightforward leak repair around a penetration or valley starts around $350 and can reach $700 depending on the flashing work. Metal roof fastener and seam repairs generally land in the $600 to $1,200 range. When a repair opens up to decking replacement or fascia dry-rot, that’s where prices climb to $1,400 to $1,900 per slope. The foothill fire zone adds cost too: Class A underlayment, ember-resistant edge metal, and upgraded assembly components aren’t optional on many 91741 homes. Call (866) 942-4187 and we’ll give you an exact, written quote. Estimates are free.
We Also Serve Cities Near Glendora
We work in Glendora daily and regularly serve Roof Repair in Glendora and the surrounding communities. Our crews are out in Azusa, Citrus, Covina, and Irwindale most weeks, and we know the same wind and sun patterns follow the foothill line through all of them. If you’re just over the city line, call us. We’re already nearby.
Serving Glendora, CA — Our Local Coverage Area
We’re based in the Glendora 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 Glendora
It depends on where you are in Glendora and what your insurance company requires. In the wildland fire interface, many patches have to be brought up to Class A fire-rated assembly standards at the time of repair. The city and your carrier may not let us replace shingles like-for-like on a fire-exposed slope. We handle this by writing the scope into our inspection findings up front, so you aren’t surprised by a code upgrade mid-job. Call (866) 942-4187 and we’ll check your property against current requirements before you spend a dollar.
Yes, granule loss on south and west slopes is one of the most common findings we see in Glendora’s inland exposure. The summer UV is relentless here, and the shingles on those elevations take a beating. They don’t leak until they do. The wind event that lifts them may expose failed underlayment, and by then you’re replacing decking too. If they look thin, a repair now costs less than a full slope rebuild later. We offer standalone inspections so you know exactly where you stand without committing to anything.
A square is 100 square feet of roof area, not the footprint of your house. So a 24-square repair means 2,400 square feet of roofing material. Repairs are often priced per square or per slope, depending on the scope. Compare bids by looking at the line items, whether they include underlayment, flashing, starter strip, and the fire-zone upgrades your property may require. A low bid that skips ember-resistant edge metal isn’t a deal in the 91741 hills, it’s an insurance problem waiting to happen.
We handle both. Our crews do metal roof repairs on homes and commercial buildings across Glendora, from standing-seam panels to modified bitumen and TPO flat roofs. We aren’t a one-material shop, so you don’t get steered away from a metal repair because we’d rather sell shingles. If it sits on a roof, we’re set up to fix it.
We stop and tell you before we do anything beyond the agreed scope. On older Glendora homes, opening a roof edge often reveals dry-rot at the fascia or sheathing that’s softened from years of sun and runoff. That’s not a change order in our book; it’s an allowance we wrote into the contract before work started. We document it, show you what we found, and price the added scope in writing before we proceed. No one touches anything you haven’t approved.
If you’ve got a leak, a wind-worked slope, or a fire-zone code question, call (866) 942-4187 to schedule your free estimate. We’ll walk the roof, tell you what’s actually going on, and put the numbers in front of you before you decide anything.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Glendora and the San Gabriel Valley foothill communities.