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
Trusted Roof Repair for Woodland Hills Homeowners
Roof repair in Woodland Hills usually falls between $350 and $1,200 for most leaks, shingle replacements, and flashing fixes, with larger structural repairs running higher. We’re Mercer Roofing Co Woodland Hills, a roofing company founded in 2000 and part of the Threshold Group family of home-service companies. Every technician we send to your door is background-checked, identity-verified, and arrives in a clean, marked uniform with a photo ID badge. You’ll know their name and see their photo before they ring the bell. Call (341) 217-2677 and a live person answers, day or night.
Key Takeaways
- Written price before any work starts, always included, never conditional.
- 365-Day Done Right Promise: if it’s not right within a year, we make it right.
- Every technician is background-checked, photo-badged, and in uniform under the Threshold Verified standard.
- Free second visit if a repair fails within the guarantee period.
- A live person answers the phone 24/7 at (341) 217-2677.
Styles & brands we work with
Roof Leak Repair
Leak Repair is what we do most often in Woodland Hills, and it typically costs between $350 and $800 depending on where the water is getting in and how long it’s been doing it. A leak is rarely where the stain shows on your ceiling. Water travels along rafters and underlayment before it drips, which means the actual entry point is often six to ten feet away from the visible damage. We trace the leak to its source using moisture meters and visual inspection of the decking, flashing, and underlayment, then patch or replace only what actually failed.
Ceiling Stains and Attic Traces
Brown rings on your ceiling or damp spots in attic insulation mean water has already penetrated the roof system. In Woodland Hills, we see this after the first heavy rain of the season when cracked sealant around vent pipes finally lets go. The fix usually involves resealing or replacing the pipe boot and checking the surrounding decking for rot.
Boots, Flashing, and Valley Leaks
Pipe boots crack from sun exposure after four to seven years in Woodland Hills heat. Flashing pulls away from chimneys and skylights as framing settles. Valleys collect debris and hold water longer than any other part of the roof. We inspect all three on every leak call, because fixing one and missing another means another stain on your ceiling next winter.
Emergency Roof Repair
Emergency Roof Repair covers the situations that can’t wait until the weather clears, and in Woodland Hills those calls usually run between $500 and $1,500 depending on the extent of the damage and what’s needed to stop water from entering. When a tree limb punches through the decking or wind tears off a section of shingles and underlayment, waiting even a day can mean insulation, drywall, and flooring damage. We tarp and seal the affected area the same day we get the call, then schedule the permanent repair once we can see the full picture.
Storm and Wind Damage Response
Santa Ana winds in the fall rip loose shingles and send tree branches through roofs across the 818. The tarp is temporary protection, but it’s done right: fastened over the damaged section with furring strips so wind can’t lift it. The permanent fix follows within days, not weeks.
After-Hours Leaks and Immediate Strikes
A leak that opens up during a midnight rainstorm isn’t something you should have to manage alone. Our phones are answered by a real person 24/7, which means you’re not leaving a voicemail while water drips into a bucket. We dispatch a technician who can assess and tarp in the dark if needed, then return for the full repair when there’s daylight.
Flat Roof Repair
Flat Roof Patch work in Woodland Hills typically costs $450 to $1,200 for most patches, seam repairs, and coating applications, though larger membrane failures can go higher depending on square footage. Flat roofs are common on mid-century homes and additions throughout the Valley, and they fail differently than pitched roofs. Water doesn’t run off, it ponds, and every pond is a slow leak waiting to happen. We repair modified bitumen, TPO, and torch-down systems, and we always check the drainage first because a flat roof repair that doesn’t fix the ponding problem won’t last.
Blistering, Ponding, and Seam Failure
Woodland Hills heat makes membrane seams expand and contract daily, and after a decade or so they start to open. Blisters form where moisture got trapped during installation or where the membrane has delaminated. We cut out blisters, patch the area with compatible material, and seal seams with the right adhesive for the membrane type.
Drain and Scupper Blockages
When a flat roof leaks, the cause is often a clogged drain or scupper letting water sit against a seam for hours after each rain. Debris from mature trees in neighborhoods like Walnut Acres collects and blocks the flow. We clear the drainage, evaluate whether the roof needs additional drains or a tapered patch, then repair the membrane damage the ponding caused.
Shingle Roof Repair
Shingle Replacement and repair handles missing, cracked, curled, or blown-off shingles, and in Woodland Hills the work usually lands between $325 and $900 depending on how many shingles failed and whether the underlayment underneath is still sound. Asphalt shingle roofs are the standard across the Valley, and most damage we see comes from wind, sun, and age in that order. We work with manufacturer-recognized brands including GAF, CertainTeed, Owens Corning, and Atlas, and we match not just the color but the exposure and profile of your existing shingles so the repair blends in.
Missing and Lifted Shingles
A missing shingle exposes the underlayment and, eventually, the decking to direct water contact. Lifted shingles are easier to miss but just as dangerous: the sealing strip has failed and wind can peel back an entire course. We replace the damaged shingles, check the surrounding courses for hidden lifting, and reseal where needed.
Granule Loss and Surface Cracking
If your gutters fill with dark granules after every rain, your shingles are losing their protective layer faster than they should. Cracking shows up first on the south-facing slopes that take the most Woodland Hills sun. Individual shingle replacement buys time, but widespread granule loss usually means a full roof installation is on the horizon within a few years. We’ll tell you honestly which one you’re looking at.
Storm Damage Roof Repair
Storm Damage Roof Repair in Woodland Hills runs between $500 and $2,500 for most wind and rain damage, with costs depending on how much of the roof surface was affected and whether the decking underneath held up. Our storm season is mostly October through March, when Pacific fronts push through the Santa Monica Mountains and hit neighborhoods like Woodland Hills and Topanga with sustained wind and heavy rain. We document everything, provide a written line-item quote, and work with your insurance company if you file a claim.
Wind-Raised Corners and Ridge Caps
Ridge caps take the brunt of Santa Ana winds, and once one lifts, the roof loses its spine. Shingles follow, then underlayment, then wood. We inspect ridge lines first after any wind event because that’s where failures start, and repairing caps early stops the whole cascade.
Insurance Documentation and Claims Support
We photograph every square of damage, mark the affected areas on a diagram, and write up what we found in plain language. If you’re filing a claim, that documentation helps you get a fair settlement. We work directly with adjusters when needed and make sure the repair scope matches the damage they approve.
Metal Roof Repair
Metal Roof Repair addresses leaks at seams, fasteners, and flashings on standing seam and corrugated metal roofs, and most Woodland Hills jobs cost between $500 and $1,500. Metal roofs last decades but their weak points are the connections: fasteners with worn gaskets, lap seams where sealant has dried out, and transition flashing where the metal meets a chimney or wall. We replace failed fasteners, reseal seams with the right sealant for the metal type, and straighten or patch panels that have been dented by falling limbs or wind-driven debris.
Fastener Backout and Gasket Failure
Metal expands and contracts more than any other roofing material, and in Woodland Hills the daily temperature swing between morning and afternoon is enough to work fasteners loose over time. When a fastener backs out, the neoprene gasket under the washer fails and water follows the screw into the decking. We replace the failed fasteners with new ones of the correct size and seal each one.
Flashing and Panel Seam Leaks
Standing seam panels are designed to shed water, but the seams themselves need maintenance where sealant ages or panels shift. At dormers, skylights, and chimney penetrations, the flashing is often the fault. We inspect every transition point during a metal roof repair call, because that’s where water finds its way in.
Commercial Roof Repair
Commercial Roof Repair for Woodland Hills businesses and property managers covers the same leak and damage issues as residential work but often involves larger flat or low-slope systems like TPO, EPDM, modified bitumen, and metal. Small commercial repairs typically run $800 to $3,000 depending on the membrane type, the size of the affected area, and whether the problem is isolated or systemic. We know that a leaking roof over a retail space or office means lost revenue, not just inconvenience, so we prioritize commercial calls and provide documentation for property records and insurance purposes.
Built-Up and Modified Bitumen Systems
Older commercial buildings throughout the West Valley often have built-up or torch-down roofs that fail at flashings, drains, and HVAC curbs. We match the existing system, whether that means hot asphalt patches or cold-applied modified bitumen repairs, so the fix integrates with what’s already on the roof. Patching with incompatible material is a common mistake that shortens the life of a commercial repair, and we won’t do that to you.
Tenant Improvements and Routine Maintenance
Property managers in Canoga Park, Winnetka, and Tarzana call us for the maintenance work that prevents emergency leaks: clearing drains, resealing penetrations around rooftop units, and touching up flashings before the rainy season. We provide written reports with photos so you can track roof condition year over year and budget for eventual replacement instead of being surprised by it.
See the difference
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After
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After
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AfterBrands We Service
We install and repair GAF shingle systems regularly, and our crews know the Timberline line inside out from starter strip to ridge cap. Matching a repair to existing GAF shingles means pulling from the right color line and nail pattern, which we do on every call. On certain jobs we use CertainTeed products when the homeowner wants a specific look or performance tier, and we’re equally comfortable with their Landmark series and their starter and ridge components.
We also work with Owens Corning and Atlas products on both repairs and full installations. Atlas shingles with their Scotchgard protector are popular with Woodland Hills homeowners who want extra resistance to the algae that shows up on shaded north-facing slopes. Whether you have GAF, CertainTeed, Owens Corning, Atlas, or any other major shingle brand on your roof, we can repair it correctly and match it so the fix disappears into the roof line.
Signs You Need a Pro Right Now
- Water stains on ceilings or walls. The stain means water is already inside your home and the leak has been active for at least a few days, even if you can’t see the entry point. Mold starts in 24 to 48 hours on wet drywall and insulation, so this is a call-today situation.
- Missing or visibly lifted shingles after wind. Every lifted shingle breaks the water-shedding chain, and the next rain will find the gap. The longer exposed underlayment sits in Woodland Hills sun, the faster it degrades and the more repair work you’re buying.
- Granules streaming into your gutters. Asphalt granules protect the asphalt from UV breakdown. When they wash away in volume, the shingles are aging out and becoming porous, which means water is getting closer to the decking every season.
- Daylight showing through your attic boards. If you can see sky from inside your attic, water can see your attic too. Holes in the decking mean the roof system has already failed in that spot and you’re one rain away from a ceiling stain at minimum.
- Sagging or spongy sections when you walk the roof. Soft decking means wood rot, and wood rot means structural weakening. This doesn’t heal and it doesn’t patch over cleanly; the affected decking needs to be cut out and replaced before new roofing goes on.
Our Process, Step by Step
- 1
Call and talk to a person. You reach a live human at (341) 217-2677, 24/7. We take your address, ask what you’re seeing, and schedule a visit at a time that works for you. Before the technician arrives, you get their name and photo by text or email.
- 2
Badge at the door, then a roof inspection. The technician presents their photo ID badge, verifies their identity, and goes over what they’ll be doing. Then it’s a full inspection of the roof surface, flashings, penetrations, and the attic if accessible. We look at the whole system, not just the complaint.
- 3
Written diagnosis and line-item quote. You get a written description of what’s wrong, what needs to happen, and what each part costs. No work starts until you approve the number on paper. That’s the Mercer Roofing Co Woodland Hills standard, every time.
- 4
The repair itself. We use manufacturer-recognized materials, hand-nail or gun-nail according to the manufacturer’s spec, and match the existing roof where possible. The work area is protected with tarps and all debris is hauled away when the job’s done.
- 5
Final walkthrough and written guarantee. We show you the completed repair, explain what was done and why, and hand you a written guarantee that covers the work for 365 days. If it’s not right within a year, we make it right. If the repair fails, the second visit is free.
How Much Does Roof Repair Cost in Woodland Hills?
A typical shingle repair in Woodland Hills runs $325 to $900. A leak repair involving flashing or pipe boots usually lands between $350 and $800. Flat roof patches start around $450 and go up to $1,200 for moderate membrane work. Emergency tarping and same-day storm response runs $500 to $1,500 depending on how much damage is present. Larger repairs that involve decking replacement or multiple roof penetrations can push past $2,000, and we’ll show you the line items before we start.
What moves the price is mostly access and extent: how steep the roof is, how many layers are already on it, and whether the decking underneath is sound. A simple one-shingle replacement on a walkable pitch costs less than a valley repair on a steep two-story home. We keep prices honest by quoting per repair, not per hour, so you know the number before any work begins. Every estimate includes the inspection, the written diagnosis, and a line-item quote. There’s no charge for the estimate, and no obligation to proceed.
Our Service Area Near Woodland Hills
Mercer Roofing Co Woodland Hills serves homeowners throughout the west San Fernando Valley and the surrounding hills: home base is Woodland Hills, with regular calls in Canoga Park, West Hills, Winnetka, Tarzana, Encino, Calabasas, and Topanga. We also cover Roof Repair in Agoura Hills and Roof Repair in Simi Valley, and we’re the crew many homeowners call for Roof Repair in Woodland Hills specifically because of the written pricing and badge-at-the-door standard.
Serving Woodland Hills, CA - Our Local Coverage Area
We’re based in the Woodland Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Roof Repair in Woodland Hills
Roof repair is the process of finding and fixing specific failures in a roof system, such as damaged shingles, failed flashing, cracked pipe boots, or membrane punctures, without replacing the whole roof. In Woodland Hills most repairs address leaks, wind damage, or age-related failure of individual components. The goal is to restore the roof’s water-shedding ability at the point of failure. Call (341) 217-2677 and we’ll tell you whether your issue is a repair or a replacement before you spend a dime.
Most residential roof repairs in Woodland Hills take between two and four hours once we’re on site, depending on the scope and whether the decking needs attention. Small shingle replacements can be done in under an hour. Emergency tarping is done the same day you call, with the permanent repair scheduled as soon as weather and materials allow. We give you a time frame in writing with your quote.
Roof repair in Woodland Hills typically runs $325 to $1,500 for most residential work. Small shingle repairs start around $325, leak repairs run $350 to $800, flat roof patches $450 to $1,200, and storm or emergency work $500 to $1,500. Larger structural repairs cost more and we show you exactly what each line item costs before we start. Get your free written estimate by calling (341) 217-2677.
Yes, we install and repair GAF shingles along with CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral products. We match the existing shingle’s brand, color, exposure, and profile so the repair blends into the surrounding roof. Mismatched repairs look obvious and reduce curb appeal, so we take the time to source the correct product. Whether your roof is GAF Timberline or an Atlas shingle, we can fix it right.
Yes, we answer the phone 24/7 and can dispatch a technician for emergency roof repair in Woodland Hills the same day you call. For storm damage, missing shingles, or an active leak, we tarp and seal the affected area to stop water intrusion, then schedule the permanent repair. Call (341) 217-2677 and you’ll speak to a live person, not a voicemail system.
Every repair from Mercer Roofing Co Woodland Hills includes a written 365-day guarantee, backed by our Done Right Promise. If the repair fails within one year, the second visit is free and we make it right. The guarantee is written, included with every job, and never conditional on a purchase. You’ll have it in hand before we pack up the ladders.
There’s not much to do, but moving vehicles out of the driveway and securing pets helps the technician work efficiently. We’ll handle the roof access, haul away old materials, and clean up with tarps and magnets. Before the technician arrives, you’ll have their name and photo so you know exactly who’s at your door. Call (341) 217-2677 to schedule your free estimate.
Schedule Your Roof Repair Service in Woodland Hills Today
Call (341) 217-2677 for a free, no-obligation roof repair estimate in Woodland Hills. You’ll speak with a real person, get a written price before any work starts, and meet a background-checked technician who shows a photo ID badge at your door. Every repair is covered in writing for 365 days. If it’s not right within a year, we make it right.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Woodland Hills since 2000.