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 Sherman Oaks
Roof repair in Sherman Oaks usually runs between $450 and $2,800 depending on whether you’re dealing with a shingle patch on a hillside slope or a flat-section rebuild over a mid-century addition. Most jobs we scope in 91403, 91423, and 91413 take one to two days once we’re on the roof. If you’re seeing water stains after the first real winter rain, call us at (866) 974-2271 and we’ll trace the leak to its actual source, not just patch what’s visible.
We’re Koreatown Roofing, and we work both sides of the Ventura Blvd split that defines Sherman Oaks. The flat-side valley homes with their hot-mop garage roofs, and the hillside properties south of the boulevard where west-facing shingle planes bake hard all afternoon. That split matters when you’re diagnosing a leak, because the fix on a 1950s ranch addition is not the same as the fix on a steep multi-plane hillside roof.
Why Koreatown Roofing Is Sherman Oaks’s Preferred Roof Repair Company
We’re a roofing-only contractor. Every job we take in Sherman Oaks is roof inspection, roof repair, or roof replacement. We don’t run a handyman division, we don’t sub out the work to rotating crews, and we don’t push one manufacturer because we got a better margin that quarter. We work with GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, so the material recommendation you get is based on your roof and your budget, not on what’s sitting in our yard.
Manny Cordero runs our crews, and he’s been on Sherman Oaks roofs long enough to know that a leak over a living room on Valley Meadow Road in 91423 is rarely a simple shingle replacement. It’s usually the tie-in where a low-slope addition meets the original steep plane. That’s the kind of local knowledge you get when the person quoting the job is the same person who’ll be on the roof with the crew.
Our Roof Repair team gets to Sherman Oaks fast. Most inspection appointments happen within a few business days, and we show up with a truck stocked for the common failure modes here: dried-out pipe boots, rusted valley flashing, ponding flat sections, and the curled-shingle damage the valley sun does every summer. Roof Repair in Sherman Oaks is what we do, and the neighborhood knows us by name, not by a franchise phone menu.
Styles & brands we work with






Commercial Roof Repair in Sherman Oaks
Commercial Roof Repair in Sherman Oaks usually means low-slope or flat work on retail strips, small office buildings, and apartment buildings concentrated along Ventura Blvd, Van Nuys Blvd, and the commercial pockets around Sepulveda. These roofs fail differently than residential shingle roofs. They pond, the seams in the modified bitumen or the old hot-mop membrane open up, and the UV exposure from long valley summers cooks the surface until the flashing pulls away at the parapet walls.
Low-Slope Patch and Seam Work
A typical commercial patch in Sherman Oaks runs $800 to $2,400 depending on how many plies we’re opening and whether the decking underneath is still sound. Most of what we see on Ventura Blvd commercial buildings is old torch-down or hot-mop that’s past its service life, and the fix is rarely just caulking a seam. We cut back to clean decking, tie in new membrane with proper overlap, and re-flash the penetrations. On a 91423 storefront, we also check the scuppers and drains, because ponding water is what kills these roofs, not rain volume.
Parapet and Edge Flashing Repairs
Flat roofs in Sherman Oaks leak at the edges first. The parapet cap flashing cracks, the counterflashing pulls loose, and water gets behind the wall before it ever touches the roof field. Repair here typically runs $600 to $1,800 depending on linear feet and wall condition. We see it on the older mixed-use buildings along Ventura Blvd where the original flashing was never replaced when the roof got its first or second recover. A recover over failed edge flashing just hides the leak until the next hard rain.
Roof Leak Repair in Sherman Oaks
Roof Leak Repair in Sherman Oaks is our most common service call, and the cost to trace and repair a single active leak usually lands between $450 and $1,600. The low end covers a straightforward pipe boot or a small shingle patch. The high end is what happens when water has traveled from a failed tie-in on a hillside roof, through the underlayment, and into a ceiling or wall cavity. By the time you see the stain, the actual entry point is often six or ten feet away.
Flashing and Pipe Boot Replacement
Dried-out and cracked pipe boots are the single most common leak source we find on Sherman Oaks homes, especially on west-facing slopes in 91403 that catch full afternoon sun. The rubber collar rots, the metal base rusts, and water follows the pipe down into the attic. Replacing a pipe boot runs $350 to $700 as a standalone repair. If the surrounding shingles are cupped or the flashing is rusted through, we quote the shingle reset and flashing work as one scope so you’re not paying for the same roof to be opened twice.
Valley and Wall Tie-In Repairs
When a leak shows up at a wall or dormer, the valley or step flashing is usually the failure point. On Sherman Oaks hillside homes, these tie-ins are where a steep shingle plane meets a lower addition or a chimney chase, and the original builders often sealed them with roof cement that’s been baked hard by fifty summers. Repairing a valley or wall tie-in here runs $700 to $1,800, and we always strip the surrounding shingle field back far enough to lay new underlayment through the transition. A surface patch won’t hold on a hot Sherman Oaks August afternoon.
Trusted Brands We Service in Sherman Oaks
We stock repair materials and order matching shingles for the brands Sherman Oaks homeowners already have on their roofs. Atlas architectural shingles are common on mid-century homes here, and their darker colorways show up all over the flatland ranch neighborhoods. Tamko and Boral products appear frequently on newer rebuilds and the larger lots up in the hills. If your roof has one of these and we’re repairing a section, we match the existing product rather than telling you to re-roof the whole house for a ten-square patch. Parts and matching shingles are typically on our truck or at the local supply yard within a day or two.
See the difference
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After
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AfterCommon Roof Repair Problems We See in Sherman Oaks Homes
- West-facing shingle curl and crack on hillside slopes. Homes above Ventura Blvd in 91403 and 91423 take direct afternoon sun on their western planes, and shingles over 1940s-to-1960s wood decking bake until they cup, then split at the nail line. We repair these before the next rain exposes the decking to water intrusion.
- Ponding water on flat additions and garage roofs. The low-slope hot-mop and modified bitumen sections over mid-century additions and detached garages were rarely built with a positive drain slope. After the first real winter rain, water ponds, the underlayment saturates, and the leak shows up at a wall or a ceiling edge, not on the roof field itself.
- Failed tie-ins between steep shingle and low-slope sections. On Sherman Oaks ranch homes with additions, the transition where a shingle plane meets a flat or low-slope section is a chronic leak point. The original flashing was often a bead of tar and a prayer, and fifty years of thermal movement has opened it up.
- Neglected outbuilding roofs on larger lots. Detached shops, ADUs, and garages on the bigger lots get roofed piecemeal over the years, and the drip edge and fascia rot goes unnoticed until a leak appears at a wall tie-in. By then, the decking is usually compromised too.
Pricing for Roof Repair in Sherman Oaks, CA
What you’ll actually pay depends on the assembly we’re opening and how far the water has traveled. A standalone pipe boot runs $350 to $700. A shingle patch on a slope runs $500 to $1,200. A low-slope or flat section repair over an addition or garage runs $900 to $2,800 when we’re stripping to decking and replacing underlayment, membrane, and flashing. Repair on a hillside roof with complex access and multiple planes will land on the higher end. Every quote we write is a fixed price, line-itemed, and scoped before we start. Call (866) 974-2271 and we’ll schedule the inspection and put numbers on it.
We Also Serve Cities Near Sherman Oaks
Our crews work the same foothill-to-valley transition in Valley Glen, Van Nuys, Studio City, and Encino. If you own property in one of those neighborhoods, the roof assemblies are similar, and the failure modes track with what we see in Sherman Oaks. We quote and schedule across the same week in most cases.
Serving Sherman Oaks, CA — Our Local Coverage Area
We’re based in the Sherman Oaks 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 Sherman Oaks
The leak isn’t new. The first hard rain after a long dry season saturates cracked shingles, failed flashing, and dried-out sealant that held fine during the dry months. Hillside homes above Ventura Blvd go through a full summer of UV and thermal expansion, and the failures open during that bake, not during the rain. The first storm is just when the water finally finds a path through. The fix is usually at the tie-ins, valleys, and penetrations, not on the open shingle field where homeowners look first. Call (866) 974-2271 and we’ll trace it before the second storm does more damage.
Yes, and we prefer it that way. On larger Sherman Oaks lots, the detached structures often have different assemblies than the main house: a shop might have a low-slope modified bitumen roof while the ADU has a steep shingle plane. We scope each building separately, price the work line-by-line, and schedule them together so you’re not paying for multiple mobilizations. The inspection is free, and the quote covers every building on the property.
Yes. When we repair a roof south of Ventura Blvd in the hillside fire exposure zones, we recommend Class A rated materials, ember-resistant vent covers, and screened soffit and gable vents where the existing openings are unscreened. LA County and local fire zones push for these upgrades in the hillside neighborhoods, and we stock the common options from Atlas, GAF, and Boral that meet the fire-resistance requirements without changing the look of your roof. It’s a repair upgrade that makes a material difference during Santa Ana wind events.
A “square” is 100 square feet of roof area. Contractors quote by squares because shingle bundles, underlayment rolls, and labor are all priced by the square. For a Sherman Oaks repair, the square count tells you how much of the roof field we’re actually opening and re-covering, but it doesn’t tell you about the flashing, the tie-ins, or the low-slope sections unless those are line-itemed separately. Our quotes break out the square count, the accessory work, and the flat-section work so you can see exactly where the money goes.
We inspect the entire roof, every time. On a Sherman Oaks mid-century ranch, the flat section over the garage or addition is statistically more likely to be leaking than the steep shingle field, and we won’t quote a repair on the shingle plane without checking the tie-in where it meets the low-slope assembly. If the flat section is the problem, we’ll tell you that first, and we’ll show you the photos from the roof to prove it. The inspection is free.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Sherman Oaks and the San Fernando Valley.