Architectural shingles
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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 Pomona
Roof repair in Pomona usually costs between $350 and $1,400 for a targeted fix, with larger wind-damage repairs around valleys and hips running $900 to $2,800 once decking or flashing is opened up. Most leaks we respond to in Pomona can be assessed within one to two business days, sometimes sooner depending on the schedule. Our crew knows the difference between a Chino Hills tile job and a Pomona bungalow with 1920s skip sheathing, and that local knowledge changes what we quote and how we fix. Call (866) 850-2496 to schedule a roof inspection and get a line-item estimate before any work begins.

Why Windmill Roof Repair Is Pomona’s Preferred Roof Repair Company
Pomona homeowners call us because we explain what the roof actually needs, not what generates the biggest invoice. Ruben Ochoa, our owner, has walked hundreds of Pomona properties from the 91766 Craftsman pockets near downtown to the mid-century tracts off Phillips Ranch Road. We repair what can be repaired and recommend replacement only when the decking, layers, and flashing make patching a bad investment. That plain honesty builds trust faster than any marketing.
Our Pomona customers consistently mention two things: the crew showed up when promised, and the quote did not move once work started. We use fixed pricing with line-item estimates, so you’ll know the exact scope before we tear off a single shingle. Working with seven shingle brands means the repair matches your existing roof visually and structurally. Whether it’s a classic Tamko shingle match on a 1940s bungalow or CertainTeed architectural shingles on a newer tract home, we stock enough inventory locally to move quickly.
Pomona’s dense streets, tight driveways, and older housing stock require a roofer who plans access before quoting. Ruben makes it a point to walk the property with the crew lead before any material gets ordered. That’s how we keep surprises off your bill.
Styles & brands we work with






Commercial Roof Repair in Pomona
Commercial Roof Repair in Pomona often means low-slope or flat sections on older buildings near Holt Avenue, the downtown corridor, and light-industrial pockets along Mission Boulevard. These roofs fail differently than residential pitched roofs: standing water, failed seams at parapet walls, and UV-damaged membrane around HVAC curbs are the usual culprits. A typical commercial leak repair in Pomona runs $650 to $1,800, depending on membrane type and how much wet insulation we need to cut out and replace.
We do not do commercial replacement or full re-roofing on large industrial buildings. Our commercial work focuses on targeted repairs and maintenance that keep a building watertight while the owner budgets for longer-term fixes. That scope fits Pomona’s mix of older retail, office, and warehouse properties where a leak starts small but spreads fast through a flat roof.
Flat Roof Patches and Seam Repairs
Flat and low-slope roofs on Pomona commercial buildings commonly crack at the seams first. We clean the surface, identify the wet insulation boundary, and patch with materials compatible with your existing membrane. No one wants a patch that peels in the next Santa Ana gust.
Parapet Wall and Curb Flashing
Where the roof meets a parapet wall or an HVAC curb is where water sneaks in on flat roofs. We rebuild those transitions with proper flashing and sealant. On Pomona’s older commercial stock, rusted metal flashing is a frequent find.
Roof Leak Repair in Pomona
Roof Leak Repair in Pomona starts with finding the actual entry point, which is rarely directly above the water stain on your ceiling. Water travels along rafters and sheathing before it drops. On Pomona’s older homes, especially the bungalows where roof lines and valleys are complicated, the leak can originate six or eight feet from where it shows. A targeted leak repair typically runs $350 to $900 when the source is a pipe boot, vent, or a single flashing point. Valley and hip leaks run higher, $900 to $2,800, because we often have to open the layers and rebuild the underlayment.
Pomona’s winter rains and Santa Ana wind events are the two triggers we hear about most. Wind lifts a shingle edge at a valley. Rain drives underneath. By the time you see the ceiling stain, the underlayment may already be saturated. We trace the leak, repair the underlying problem, and document everything with photos so you can see exactly what we found and what we fixed.
Vent Boot and Pipe Flashing Repairs
UV-cracked rubber boots around plumbing vents and exhaust pipes are the most common leak source on Pomona’s mid-century tract homes. The rubber degrades under Pomona’s summer sun and splits. We replace the boot, check the surrounding shingles, and seal the penetration properly.
Valley and Hip Leak Repairs
Valleys are where two roof planes meet and where water concentrates. On older Pomona homes with worn valley flashing or cement that has cracked away from tile, leaks follow quickly. Our repair includes new valley flashing or a proper woven valley installation, plus ice and water shield underlayment as standard.

Trusted Brands We Service in Pomona
We work across seven shingle brands, including Tamko, Boral, GAF, and CertainTeed, so a repair can match your existing roof instead of looking like a patch job. If your Pomona home has older three-tab shingles, we can match the profile and color. If you’re considering a longer-term fix on a wind-exposed north-side roof, we’ll explain the difference between brands and let you choose. Our local storage and supplier relationships in the Pomona area mean we are not waiting a week on a special-order bundle. Seven brands, one crew.
Common Roof Repair Problems We See in Pomona Homes
- Wind-lifted edges at valleys and hips. Santa Ana winds funnel down from the San Gabriels and peel shingles at the exact transition points where water concentrates. Older bungalows with skip sheathing are especially vulnerable because the decking does not provide a solid nailing surface.
- UV-cracked and curled asphalt shingles. Pomona’s inland-valley sun is relentless. Shingles get brittle, curl at the edges, and split at the nail line. Subsequent leaks at penetrations and drip edge get worse with each summer heat cycle.
- Hidden dry rot behind fascia and soffit. Hillside-adjacent homes and north-side bungalows often have dry-rotted fascia hidden behind the first layer. We find it when we open a valley or replace a rafter tail. A repair that looked routine from the ground becomes a decking and framing job.
- Multiple layers over marginal decking. Many older Pomona homes have two or three layers of shingles over original wood sheathing. Water gets trapped between layers, and the added weight stresses the framing. A proper repair on these roofs means cutting back to solid decking and addressing what is underneath.
See the difference
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AfterPricing for Roof Repair in Pomona, CA
A small repair like a vent boot replacement in Pomona costs $350 to $500. A valley rebuild with new flashing and underlayment runs $900 to $1,800. A commercial flat roof patch on a building off Mission Boulevard runs $650 to $1,800. When we open up an older Pomona roof and find rotted decking, the repair can push to $2,500 or more depending on how much framing is damaged. Access matters too: a tight lot with no staging area or a two-story bungalow with steep access adds to the labor. We give fixed line-item quotes before starting, and the price does not change unless we find hidden damage and you approve the added scope in writing. Call (866) 850-2496 for a free estimate.
How Pomona’s Tight Lots and Permit Rules Change the Job
Pomona’s older neighborhoods are dense. Homes sit close together, driveways are narrow, and there’s rarely a convenient place to park a truck, a trailer, and a dumpster. We plan access before we quote. If your roof repair means a tear-off section, we’ll tell you where the debris container will sit, how we’ll protect your neighbor’s property line, and what happens to the shared driveway. On a tight lot near Lincoln Park or along the older streets in 91766, that planning is the difference between a clean job and an irritated neighbor.
Some Pomona repairs also need city permits, especially if we’re replacing decking, altering roof structure, or working on a building within a historic overlay district. We handle permit applications directly with the city. That includes the paperwork, the inspection scheduling, and making sure the work passes before we call the job done. Ruben Ochoa personally reviews every Pomona permit submittal to make sure the scope matches what the city will see on site.
Pomona’s work-hour and noise ordinances restrict when roofing crews can run nail guns and tear-off equipment. We schedule accordingly and post notice where needed. If you share a wall or a party line with a neighbor, we flag that before the first nail goes in. A good roof repair should not start a fence dispute.
What Working on a Tight Pomona Lot Actually Looks Like
On a 1920s bungalow near downtown Pomona in the 91766 ZIP, our crew opened a wind-lifted valley and found skip sheathing with dry-rotted fascia behind the original wood shakes. The homeowner had called us for what looked like a simple valley leak. Once we opened the first layer, the scope shifted. We replaced the rotted decking, installed ice and water shield in the valleys, new flashing, and CertainTeed architectural shingles with a six-nail pattern to handle the next Santa Ana wind event. The lot was tight: no side yard to stage materials, a shared driveway on one side, and a neighbor’s bedroom window about eight feet from the roof edge. We used a smaller tear-off crew, hand-carried materials up a ladder, and kept the neighbor informed the whole time. The repair cost more than the original estimate because of the hidden decking work, but the homeowner approved the change before we proceeded. That’s how we work in Pomona.
We Also Serve Cities Near Pomona
Our Pomona crew regularly works in La Verne, Walnut, Covina, and Claremont. Each city has its own housing stock and permit quirks, but the same inspection-first approach applies. If you’re in a neighboring city and need someone who understands the wind and sun patterns of the eastern San Gabriel Valley, Roof Repair from Windmill is one call away. And if you’re in Pomona itself, our Pomona presence means we’re nearby when you need us.
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
Tight lots add labor time for material handling, staging, and debris removal, which typically adds $150 to $400 to a Pomona repair compared to a suburban home with open access. If your home has a shared driveway or no side yard, we’ll factor that into the quote up front. Call (866) 850-2496 and we’ll walk the property before quoting.
Most targeted repairs in Pomona do not need a permit, but structural decking replacement, framing work, or work in a historic overlay district often does. We pull permits when required and handle the inspection scheduling. Dense neighborhoods mean the city sometimes requires additional documentation for access or debris placement; we manage that too.
Pomona restricts construction noise to daytime hours, generally starting around 7:00 AM on weekdays, with shorter windows on weekends. Roofing is loud work, so we schedule nail-gun and tear-off activity within the city’s allowed hours and give neighbors a heads-up when we’ll be on site.
Pomona sits at the foot of the San Gabriels where Santa Ana winds funnel down with more force than lower-valley cities like Chino or Ontario. That means roof repairs here need stronger nailing patterns, proper valley underlayment, and flashing details that can handle repeated uplift. We repair with the next wind event in mind, not just the last one.
A square is 100 square feet of roof area. When a quote says “12 squares,” that’s 1,200 square feet of roof surface. To compare quotes accurately, ask each roofer to list the squares, the materials by brand and type, the underlayment, the tear-off scope, and whether decking repair is included or billed separately. We give you a line-item estimate so there’s no ambiguity. Call (866) 850-2496 for a free estimate on your Pomona roof.
Written by Ruben Ochoa, Owner at Windmill Roof Repair, serving Pomona and the eastern San Gabriel Valley.