Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
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AfterFast, Reliable Roof Repair Across Pomona
Roof repair in Pomona means dealing with two things most other cities in LA County don’t face: extreme inland heat that blisters shingles and cracks flashings, and Santa Ana winds that lift mortar-bedded ridge caps off original clay tile roofs in the Lincoln Park Historic District. A small leak ignored for one summer in Pomona’s 105°F heat spreads fast through aging wood sheathing. If you’re seeing water stains, lifted shingles, or granule in your gutters, call (743) 200-8347 for a free estimate. We’ll send a background-checked technician with a photo ID badge, and you’ll get a written price before a single nail is driven.
Key Takeaways:
- Most Pomona roof repairs run $280 – $1,400 depending on scope, with leak repairs starting around $325.
- Our technicians arrive in uniform with photo ID badges, and you’ll know the tech’s name and face before they knock.
- Every repair includes a written guarantee: 365 days, free second visit if the fix fails.
- We know Pomona’s historic clay tile and tight-lot staging issues because we work them every month.
Mercer Roofing has been repairing roofs across Pomona since 2000 as part of the Threshold Group family of home-service companies. Our Roof Repair crew understands the difference between a foam-set ridge cap and a mortar-bedded original, and we quote accordingly. When you call, a live person answers 24/7. No voicemail, no call-back form.
Why Mercer Roofing Is Pomona’s Preferred Roof Repair Company
Homeowners in Pomona tell us the same thing over and over: they want to know who’s coming to the door before they open it. That’s why every Mercer technician is background-checked, identity-verified, and dispatched under the Threshold Verified standard. Before your appointment, we send the tech’s name and photo to your phone. When they arrive, they badge in with a photo ID and wear a clean, marked uniform. That’s not a sales pitch. It’s how we’ve operated since the beginning.
Grant Whitlock leads our team, and he holds every job to the 365-Day Done Right Promise: if the repair isn’t right within a year, we make it right. No argument, no invoice. That promise is written into every repair we do in Pomona, from a vent boot replacement near Ganesha Park to a full flashing repair on a 1920s bungalow off Holt Avenue.
We also know Pomona’s permitting and overlay-district review process. When your roof sits in a historic district or a tight-lot zone, the repair has to be staged, documented, and cleaned up in a way that passes inspection and keeps the neighbors from calling the city. We handle that end so you don’t have to.
Storm Damage Roof Repair in Pomona
Storm damage roof repair in Pomona almost always traces back to Santa Ana wind events that funnel through the passes near San Antonio Canyon and hit the older tile roofs around Lincoln Park and downtown hard. Wind-lifted ridge caps, torn shingles at the eave line, and split flashing at roof-to-wall transitions are the three most common calls we run after a fall wind event. A typical storm damage repair in Pomona runs $350 – $1,200 depending on how many caps or shingles were lost and whether the underlayment underneath was exposed to rain.
Wind-Lifted Ridge Caps on Historic Tile
On the 1910s – 1940s Spanish Colonial Revival homes concentrated around Lincoln Park and nearby streets, ridge and hip caps are mortar-bedded, not foam-set. When the wind lifts one, the fix is re-bedding: removing the loose mortar, cleaning the tile, setting fresh mortar, and re-seating the cap. Contractors who assume a modern foam-set system routinely underquote this job. We don’t.
Shingle Tear-Off and Replacement After Wind Damage
Post-WWII tract homes from the 1950s and 1960s fill much of Pomona’s flatland, and their architectural shingles take a beating during Santa Ana events. When we replace wind-damaged shingles, we also check the drip edge and the first course nails. If the original install skipped those details, the next wind event will just take the new shingles too. Shingle replacement in Pomona runs $280 – $650 for a typical wind-damaged section.
Metal Roof Repair in Pomona
Metal roof repair in Pomona usually involves one of three things: loose or missing fasteners on standing-seam panels, failed sealant at panel overlaps, or corrosion at the eave where sprinkler overspray and Pomona’s hard water leave mineral deposits. The inland heat expands and contracts metal panels daily, and over ten or fifteen years, the fasteners back out. A typical metal roof repair in Pomona runs $400 – $1,400 depending on panel access and whether we’re replacing fasteners, re-sealing laps, or patching a corroded section.
Fastener Replacement and Panel Re-Sealing
Metal panels move. Every day of 105°F heat followed by a cool night works the screws loose a fraction of a millimeter. We don’t just tighten them; we inspect the rubber washers, replace any that are cracked, and re-seal the laps with the right sealant for Pomona’s UV load. The cheap sealants fail in two years here.
Corrosion Repair at Eaves and Valleys
Pomona’s older metal roofs, especially on 1950s tract homes and commercial buildings along Mission Boulevard, often rust at the eave line where minerals in irrigation water and hard tap water sit against the panel edge. We cut out the corroded section, treat the surrounding metal, and patch with matching gauge and profile. If the roof is too far gone, we’ll tell you straight before quoting a patch that won’t hold.
Trusted Brands We Service in Pomona
We install and repair shingle roofs using manufacturer-recognized brands including GAF, CertainTeed, Atlas, and Owens Corning. For Pomona homes with tile, we work with original clay mission tile and modern replacement tile, always matching profile and color rather than slapping on a patch that stands out from the street. Because we keep common shingle profiles, vent boots, flashing stock, and mortar materials stocked for Pomona-area jobs, most repairs go from diagnosis to completion in a single visit, no waiting on a supply-house run across the county.
Common Roof Repair Problems We See in Pomona Homes
- Blistered and cracked shingles from thermal cycling. Pomona’s inland heat pocket pushes summer temperatures past 105°F, and the daily expansion-contraction cycle breaks down low-grade asphalt shingles years before their 25-year rating. We see blistering on south and west-facing slopes the most.
- Split flashings at roof-to-wall transitions. The same heat that blisters shingles also cracks old galvanized flashing and dried-out sealant. On Pomona’s 1920s – 1940s Craftsman and Spanish Colonial homes, this is the most common source of slow wall leaks.
- Wind-lifted, mortar-bedded ridge caps on original clay tile. In the Lincoln Park Historic District and adjacent blocks, broken tile mortar after a Santa Ana wind event is a recurring repair, not a one-time fix. We re-bed caps properly so they hold through the next wind season.
- Staging and access problems on tight lots and shared drives. Many Pomona homes, especially in the older core, have narrow shared drives, no off-street parking, and party walls. Careless tear-off or debris handling here gets the neighbors involved, and in overlay districts, it can stall the permit sign-off.
Pricing for Roof Repair in Pomona, CA
Here’s what Pomona homeowners can expect to pay for common repairs:
- Leak repair and localized patching: $325 – $700
- Flashing repair at a wall or chimney: $250 – $600
- Vent boot replacement: $200 – $450
- Ridge cap re-bedding on clay tile (per cap): $45 – $90 per cap, with most wind-damage jobs running $350 – $1,200 total
- Shingle replacement for a wind-damaged section: $280 – $650
- Flat roof patch (torch-down or modified bitumen): $350 – $950
- Valley repair: $300 – $750
- Storm damage repair, full scope: $350 – $1,950 depending on decking and underlayment exposure
What moves the number? Access is the big one. A roof with a clear driveway and a wide side yard costs less to stage than a tight Lincoln Park lot where we’re running materials from the street with a spotter. Historic-district review can add a layer of documentation, though we handle that paperwork. Every quote is written, line-itemed, and fixed before work begins. No change orders. Call (743) 200-8347 for a free estimate, and you’ll know exactly what the job costs before we touch the roof.
We Also Serve Cities Near Pomona
Mercer Roofing serves Pomona and the surrounding communities, including Diamond Bar, Montclair, Chino Hills, and Claremont. If you’re just over the city line, the same written-price guarantee and Threshold Verified technician standard apply. Learn more about our work across the area at our Pomona service page, or call (743) 200-8347 to schedule a repair.
Serving Pomona, CA - Our Local Coverage Area
We’re based in the Pomona 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 Pomona
Because original clay tile roofs in Pomona’s Lincoln Park Historic District and the surrounding Spanish Colonial Revival blocks use mortar-bedded ridge and hip caps, not modern foam-set or mechanically fastened caps. Re-bedding a mortar cap means removing the broken mortar, cleaning the tile, mixing and setting fresh mortar, and re-seating the cap so it holds through the next Santa Ana season. It’s a slower, more skilled job than gluing a foam cap down, and a contractor who quotes the foam-set price will either lose money or cut corners. We quote the real labor. Call (743) 200-8347 for an exact figure.
It changes the access plan, the debris handling, and the schedule. On a tight lot, especially in Pomona’s older core, we may run the truck and trailer from the street with cones and a spotter, keep tear-off in a single 10-yard box, and work inside the city’s daytime noise window so neighbors aren’t dealing with hammering at 6 a.m. If a shared drive is the only access, we coordinate before we block it. These constraints get baked into the written quote, so there are no surprises mid-job. Call (743) 200-8347 for a free estimate.
Usually both. Santa Ana winds funneling through the passes near Pomona regularly exceed 40 mph in exposed areas, and shingles that weren’t nailed to the manufacturer’s pattern or installed over a failed drip edge will lift regardless of brand. But low-grade asphalt shingles also lose tear strength faster in Pomona’s heat, so a ten-year-old cheap shingle tears more easily than a fifteen-year-old quality shingle. When we repair wind damage, we check the nailing pattern, the drip edge, and the seal strips, then fix what actually caused the lift. Call (743) 200-8347 and we’ll tell you what’s on your roof.
Yes. Pomona sits in an inland heat pocket at the eastern end of the San Gabriel Valley where summer temperatures routinely exceed 105 – 108°F, measurably hotter than cities just 15 miles west that get marine air. That daily thermal cycling expands and contracts roofing materials hundreds of times each year, cracking tile mortar, splitting flashings, and blistering low-grade asphalt shingles within a single decade. A roof that lasts 25 years in Claremont may last 18 in Pomona given the same materials and install quality. Call (743) 200-8347 for a full inspection if your roof is past ten years old.
You don’t need to, but we recommend it and we’ll help. On tight Pomona lots with shared drives, party walls, or houses close enough to touch, a quick note to the neighbors about the day and the truck position prevents friction and keeps the job moving. In historic or overlay districts, neighbor complaints can trigger city review. We’ll let you know if your street falls into a zone where advance notice is wise. Call (743) 200-8347 with your address and we’ll talk it through.
Call Mercer Roofing for Roof Repair in Pomona
If your roof is leaking, lifting, or just looks tired after another Pomona summer, call (743) 200-8347. We’ll answer live, schedule a free estimate, and send a background-checked, photo-badged technician whose name and face you’ll know before they arrive. Every repair comes with a written price, a 365-day written guarantee, and a free second visit if the fix doesn’t hold. That’s the Mercer standard. Founded in 2000, part of the Threshold Group family, and here for Pomona when you need us.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Pomona and the San Gabriel Valley since 2000.