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 Winnetka
Roof repair in Winnetka usually means dealing with a 1950s or 1960s ranch-style home whose original wood shakes or second-generation composition shingles have quietly reached the end of their useful life. Most repair calls we answer start the same way: a homeowner notices a water stain on the ceiling after the first heavy rain and realizes the roof has been failing for months. We know Winnetka’s housing stock, we know how the San Fernando Valley’s 100-degree summers cook a low-pitch roof, and we answer the phone when you call. If you need a straight answer about what’s wrong and what it costs, call (661) 219-7793 for a written quote before any work begins.
Why Crestview Roofing Co Santa Clarita Is Winnetka’s Preferred Roof Repair Company
Dylan Pace runs Crestview Roofing Co Santa Clarita with a simple rule: the price you see in writing before the job is the price on the invoice when we leave. That’s the Relay Visibility Guarantee, and it changes how Winnetka homeowners feel about calling a roofer. You’ll know who’s driving to your house before they arrive, with a live trackable arrival time and a background-checked, uniformed technician showing up at your door.
Winnetka’s homes don’t all fail the same way. A wood shake roof on the east side near Winnetka Avenue and Sherman Way behaves completely differently from a composition shingle roof on a 1960s tract home closer to Oso Avenue. Our Roof Repair crews have walked enough of these roofs to know where water finds its way in after 40, 50, or 60 years of San Fernando Valley heat. Every repair is covered by the 365-Day Done Right Promise, in writing, included with every job. If a covered repair fails within a year, we fix it at no charge.
Here’s what makes working with Crestview different: a written price before any work starts, before-and-after photos so you can see exactly what was done on your roof, and a digital invoice sent by text. No four-hour windows, no vague “we’ll be there sometime Tuesday.” A live person answers calls 24/7, not a voicemail loop. That’s the Relay Standard, and it’s built into every job we do in Winnetka.
Styles & brands we work with






Metal Roof Repair in Winnetka
Metal roof repair in Winnetka comes up most often on the flat-roof additions and carports you see attached to 1950s ranch homes, and it usually involves sealing laps and seams, replacing corroded fasteners, or patching around penetrations where a swamp cooler or vent once sat. The Valley’s dry heat bakes sealant until it cracks and pulls away from the metal, and by the time water shows up inside, the leak has often been active for weeks. A typical metal roof seam repair or penetration reseal in Winnetka runs $350 to $900, though full panel replacement pushes higher.
Standing Seam Re-Sealing
Standing seam panels expand and contract constantly in Winnetka’s summer heat, which wears out sealant at the laps and ends. We clean the seams, remove the failed sealant, and apply a manufacturer-backed sealant rated for the Valley’s temperature swings. A single penetration reseal or seam repair typically runs $350 to $650.
Flat Roof Metal Patching
Older metal flat roofs on Winnetka carports and patio covers often fail at the spots where someone caulked around a vent or mounted an antenna. We inspect the full panel rather than just the obvious hole, because hidden corrosion under old sealant is common here. Patching with a new metal section usually runs $500 to $900, depending on how far the corrosion has spread.
Commercial Roof Repair in Winnetka
Commercial roof repair in Winnetka centers on the low-slope and flat buildings along Sherman Way, Winnetka Avenue, and the small commercial strips dotted through the neighborhood. These roofs collect Valley heat all day and shed it at night, and that thermal cycling is what cracks membranes, opens seams, and fails flashing. A typical commercial leak repair or membrane patch in Winnetka runs $500 to $1,200, while flashing rebuilds and larger membrane replacements run higher. We inspect every roof with photos so you see the problem before you pay for the fix.
Membrane Patch and Leak Repair
Most commercial roof leaks in Winnetka trace to a penetration: an HVAC curb, a vent stack, a drain bowl, or a conduit that somebody sealed incorrectly years ago. We cut out the failed area, patch it with matching material, and seal the laps correctly. Expect $500 to $1,200 for a typical patch, including the inspection photos.
Commercial Flashing Rebuild
On older Winnetka commercial buildings, the original flashing at parapet walls and roof edges is often the same age as the building and past its useful life. We rebuild flashing in sections using formed metal that matches the existing profile. A parapet wall or curb flashing rebuild typically runs $900 to $1,800, and we write the scope and price before we touch the roof.
Trusted Brands We Service in Winnetka
We install and repair the materials your roof was built with, and we keep enough common inventory in our Los Angeles dispatch to get most Winnetka jobs done without waiting weeks on a supplier. For shingle work, we trust GAF, CertainTeed, and Owens Corning shingles, and we can match existing colors on most Winnetka tract homes. For flat and low-slope repairs, we work with the membrane systems those roofs were designed around. If you want to know which material belongs on your specific roof, call (661) 219-7793 and ask. We’ll tell you what we’d use and why, with the price in writing.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Repair Problems We See in Winnetka Homes
- Brittle wood shakes cracking during attempted patches. On Winnetka’s east side, original 1950s wood shakes are now so dry and brittle that stepping on them to fix one small leak often cracks half a dozen more. We usually recommend full-field replacement with architectural shingles, because a patch on a shake roof this far gone buys you weeks, not years.
- Unvented attics cooking shingles from below. Many Winnetka ranch homes were built with little or no attic ventilation, and the Valley’s triple-digit summers push attic temperatures past 140 degrees. That heat bakes the shingles from underneath, causing granule loss, curling, and thermal splitting years earlier than expected.
- Worn-through valleys and penetrations leaking at the first heavy rain. Second-generation composition shingle roofs often look fine from the ground but have valleys, pipe boots, and vent flashing that are decades past replacement. The first serious winter storm finds those weak points, and the leak that results usually shows up as a ceiling stain within 48 hours.
- Missing or failing drip edge at roof edges. Many original Winnetka roofs were installed without drip edge, or with metal that has since rusted through. Without proper drip edge, rainwater wicks back under the shingle overhang and into the fascia, and repair work on the roof edge reveals rot that has to be addressed before new shingles go on.
Pricing for Roof Repair in Winnetka, CA
Most small to mid-size roof repairs in Winnetka run between $350 and $1,800, depending on what’s actually wrong. A simple pipe boot replacement runs $250 to $400. Flashing repair around a chimney or vent runs $400 to $900. Valley repair or replacement runs $500 to $1,200. If you have brittle wood shakes or widespread shingle failure, you’re looking at a full-field replacement, which in Winnetka typically runs $9,800 to $18,500 for an average ranch-style home, depending on decking condition and tear-off of the old shakes. The truth is that many Winnetka homeowners come to us for a $500 patch and learn their roof is past patching. A written quote from Crestview costs you nothing, and it comes with photos of everything we saw.
We Also Serve Cities Near Winnetka
Crestview Roofing Co Santa Clarita serves all of Winnetka and the surrounding area, including Reseda, Northridge, Chatsworth, and Porter Ranch. If your home is on a Winnetka-adjacent street, the same pricing, written-before-we-start guarantee, and 365-Day Done Right Promise apply. Call (661) 219-7793 and ask for a free estimate anywhere in the west Valley.
Serving Winnetka, CA - Our Local Coverage Area
We’re based in the Winnetka 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 Winnetka
If your shakes are original to a 1950s home, they’ve been drying in Valley heat for over 50 years, and they’ll snap rather than flex when anyone walks on them. A repairable shake roof still has some give; a roof that’s ready for replacement cracks, crumbles, or shows daylight through gaps. You can’t easily see this from the ground. Call (661) 219-7793 and we’ll inspect it with photos, then give you a written recommendation. If it’s repairable, we’ll quote the repair; if it’s not, we’ll tell you that too, and show you the photos.
Because most original Winnetka ranch roofs were built with little or no attic ventilation, and a new roof on an unvented attic will fail early. The Valley’s summer heat turns an unvented attic into an oven that cooks shingles from underneath, which voids some manufacturer warranties and shortens the roof’s life. When we do a major repair or replacement, we check ventilation and recommend ridge or eave vents where they’re missing. It adds cost, but it’s the difference between a 10-year roof and a 25-year roof in Winnetka’s climate.
For most Winnetka ranch homes, architectural composition shingles from GAF, CertainTeed, or Owens Corning are the best balance of heat tolerance, cost, and longevity. They handle the Valley’s thermal cycling well and are rated for low-pitch applications when installed with proper underlayment. Tiles handle heat beautifully but weigh more than many 1950s framing designs were built for. We’ll give you a material recommendation and the reasoning behind it, in writing and with prices, before any work starts.
Ice and water shield is a self-sealing membrane that goes under shingles at roof edges, valleys, and penetrations, and it’s the single best defense against the wind-driven rain Winnetka gets during winter storms. When water gets under shingles at a vulnerable spot, the membrane seals tight around the fasteners and blocks it from reaching the decking. On an older roof with worn valleys or edge rot, we install it wherever the repair touches a vulnerable surface. It’s standard on our valley and edge repairs.
Because many east side Winnetka homes were built without drip edge, or with thin metal that has rusted through after 60 years of weather. Drip edge is the metal lip at the roof edge that directs water into the gutter instead of letting it wick back under the shingles and into the fascia. During repair, if the existing drip edge is gone or failing, we replace it as part of the job. It’s a small cost, usually $4 to $8 per linear foot installed, and it’s the difference between a repair that holds and one that leaks again in a year.
If you’ve got a roof issue in Winnetka and you’d like a straight answer, call (661) 219-7793. We’ll schedule a visit, inspect the roof with photos, and put a written price in your hand before any work begins. That’s how we’ve done it since 2000, and that’s how the Relay Visibility Guarantee works on every job. If it’s not done right, the 365-Day Done Right Promise covers it, in writing, with a free second visit.
Written by Dylan Pace, Owner at Crestview Roofing Co Santa Clarita, serving Winnetka and the surrounding San Fernando Valley since 2000.