Chimney Flashing Repair Altadena CA That Stops Leaks Cold
Licensed flashing crews serving every Altadena neighborhood since 2020
Chimney Flashing Repair Altadena CA is what stands between your ceiling and the next rainstorm. We seal rusted, lifted, and missing flashing around brick chimneys across Los Angeles County, usually within one visit. If you have spotted a brown ring on the ceiling or grit in the fireplace, call us before the next storm pushes water deeper into the framing. We have protected Altadena homes since 2020.
What Chimney Flashing Repair Altadena CA Really Involves
Chimney Flashing Repair Altadena CA is the trade of rebuilding the metal seal where a chimney passes through the roof plane. That seal is not one piece. It is step flashing woven into each shingle course, counter flashing cut into the masonry, a cricket or saddle on the uphill side, and a bead of polyurethane sealant closing the joint. When any layer fails, water runs straight down the chimney chase and into your attic. We replace the failed layers, not just the caulk on top.
Altadena chimneys take a specific beating. Summer UV bakes the sealant until it cracks, then winter rain finds every gap. Older masonry chimneys near Christmas Tree Lane and Historic Highlands often have flashing that was cut by hand decades ago and has since pulled loose from the brick. If you have been searching for a chimney flashing fix near me in Altadena, the pattern is usually the same: a small leak that grows every season until the drywall stains.
Why Altadena Homeowners Fix Chimney Flashing Early
A chimney leak rarely stays a chimney problem. Water travels sideways through framing, insulation, and ceiling drywall before you ever see a stain. These are the outcomes our Altadena customers care about most.
Stop Water Before Framing
Water entering at the chimney chase can rot roof sheathing and ceiling joists within two rainy seasons. We rebuild the flashing layers so the chimney-to-roof joint sheds water the way it did when the house was new. Most repairs take two to four hours and close the entry point the same day.
Protect Masonry And Mortar
Constant moisture eats mortar joints and spalls brick faces, and repointing a full chimney can run into the thousands. A properly seated counter flashing with a reglet cut into the mortar keeps runoff off the masonry. That single detail is why our flashing repairs outlast a caulk-and-pray patch by years.
End The Ceiling Stain Cycle
Homeowners in West Altadena and The Meadows often repaint a ceiling stain every spring without fixing the source. Once we trace the leak to the flashing and seal it, the stain stops growing. We mark the repair area so you can confirm the fix after the next storm instead of guessing.
Keep The Fireplace Usable
A leaking chimney drips onto the smoke shelf and damper, which rusts the metal and leaves grit in the firebox. Fixing the flashing keeps the interior dry so your fireplace stays safe to use through winter. We check the damper and smoke chamber while we are on the roof at no extra charge.
How Our Chimney Flashing Fix Works
Every job follows the same five steps, whether it is a small counter flashing reseal or a full flashing rebuild on a masonry chimney. You will know what is happening and what it costs before we start.
Roof And Attic Inspection
We start on the roof and finish in the attic. Up top we check the step flashing, counter flashing, cricket, and sealant joints. Inside, we look for staining on the chimney chase and rafters. This takes about 30 minutes and tells us whether the leak is at the flashing or somewhere else, like a vent pipe boot.
Written Findings And Price
You get a plain-language summary of what failed and a fixed price before any work begins. If the flashing only needs resealing, we say so. If the counter flashing has pulled out of the mortar and needs a reglet cut, we show you the gap. No surprise line items later.
Flashing Removal And Prep
We pull the failed flashing with a pry bar and utility knife, taking care not to tear the surrounding shingles. Rusted galvanized steel goes in the dumpster. We wire-brush the masonry joint and clear old roofing cement so the new metal seats flat against clean surfaces.
New Flashing And Sealing
New copper or galvanized step flashing is woven into the shingle courses, and counter flashing is cut into the mortar and bent on site with a hand seamer. We bed the joints in polyurethane sealant and finish the uphill side with a cricket where the chimney is wider than 30 inches. Most installs take two to four hours.
Water Test And Cleanup
Before we leave, we run water at the chimney joint and watch the attic side for drips. If anything weeps, we find it now, not after the next storm. We magnet-sweep the yard for nails, haul away old metal, and leave you a photo record of the finished flashing.
Why Altadena Calls Us For Chimney Flashing Repair
Plenty of roofers will smear sealant around a chimney and invoice you. We rebuild the flashing system so the repair holds through multiple rainy seasons. Here is what that looks like in practice.
Licensed And Insured Crews
We hold a California Contractor License (C-39 Roofing) and carry full liability and workers comp coverage. Every technician on your roof is OSHA safety certified. If you want to verify our license before we start, we will send you the number the same day you call.
Same-Week Scheduling
Most chimney flashing repairs in Altadena get scheduled within the same week, and active leaks jump to the front of the line. When you call before a forecast storm, we try to get eyes on the chimney within 24 to 48 hours so the fix happens before the rain.
Materials That Last
We install copper, galvanized steel, and lead flashing from suppliers like GAF, Owens Corning, and CertainTeed, bedded with Henry or Oatey polyurethane sealant. Copper costs more up front and outlasts painted steel by decades, which matters on a chimney you plan to keep.
Photo Proof Of The Fix
You get before-and-after photos of the flashing, the reglet cut, and the sealed joints. If you ever sell the house, those photos answer the buyer's inspector without a second roof visit. It is the kind of record that turns a one-time repair into documented maintenance history.
What Our Chimney Flashing Repair Covers
Every chimney flashing job includes the full repair of the roof-to-chimney joint, not just the visible metal. If we find a related problem while we are up there, we show you and price it separately so you can decide.
What's Included
Step Flashing Replacement
We remove failed step flashing and weave new pieces into each shingle course along the chimney sides. Each piece overlaps the one below by at least 2 inches so water sheds downhill instead of backing under the shingles.
Counter Flashing Reglet Cut
Counter flashing is cut into the masonry with a grinder and sealed with polyurethane, creating a mechanical lap that does not rely on surface caulk. This is the detail most quick repairs skip and the reason they fail within a year.
Cricket Or Saddle Build
Chimneys wider than 30 inches get a cricket on the uphill side to divert water around the stack. We frame and flash the cricket with the same metal as the rest of the repair so runoff never pools against the chimney.
Sealant And Joint Renewal
We bed every lap in Henry or Oatey polyurethane sealant, not hardware-store silicone. Polyurethane stays flexible through Altadena's summer heat and winter rain, so the joints move with the roof instead of cracking.
Attic Leak Verification
After the flashing is set, we run water at the joint and check the attic side for drips. If water still shows up, we keep looking until we find the real entry point, whether that is the flashing, a vent pipe boot, or a skylight curb.
Chimney Leaks We Fix In Altadena
Most chimney leaks trace back to one of a handful of failures. Here are the ones we see most often on Altadena roofs, what happens if you leave them, and how we close them out.
Corroded galvanized flashing under the shingles
Rust holes let water drip directly onto the chimney chase and ceiling drywall, and the leak grows with every storm until the sheathing softens.
We pull the rusted metal, inspect the sheathing underneath, and install new copper or galvanized step flashing woven into the shingle courses. If the sheathing has softened, we replace that section before the new flashing goes down.
Counter flashing pulled away from the mortar
A gap between metal and brick is an open door for wind-driven rain, and it usually shows up as a stain on the ceiling right beside the chimney.
We cut a fresh reglet into the mortar joint, bend new counter flashing on site, and seat it into the groove with sealant. The metal now laps into the masonry instead of sitting on the surface where it can lift again.
Cracked sealant at the flashing joints
UV exposure bakes the sealant until it shrinks and cracks, and the first hard rain finds every split. Left alone, water works under the flashing and into the roof deck.
We strip the old sealant, clean the metal and masonry, and re-bed the joints with polyurethane sealant rated for roof temperatures. This is the repair that stops the small drips before they become ceiling damage.
Missing kickout flashing at the chimney wall
Without a kickout, runoff runs down the wall beside the chimney and rots siding, stucco, and the wall sheathing below.
We fabricate and install a kickout flashing that diverts water away from the wall and into the gutter. It is a small piece of metal that prevents a large repair later, and we install it in the same visit as the chimney flashing work.
When Altadena Homeowners Call Us
A homeowner in West Altadena notices a brown water stain spreading on the ceiling beside the chimney after the first big storm of the season.
We inspect the roof and attic, trace the stain to a lifted counter flashing, cut a new reglet, and install fresh copper counter flashing with polyurethane-sealed joints. The whole repair takes about three hours.
The stain stops growing after the next rain, and the homeowner can repaint the ceiling knowing the source is closed.
A family near Christmas Tree Lane is preparing to sell and the buyer's inspector flags rusted flashing around the chimney.
We replace the step and counter flashing, document the work with photos, and provide a written summary of materials and methods for the disclosure packet. The repair is scheduled and finished within the same week.
The buyer's follow-up inspection clears the chimney, and the sale moves forward without a repair credit.
A homeowner in The Meadows has been patching the chimney with caulk every fall and the leak keeps coming back worse each year.
We remove the caulk, find the counter flashing was never cut into the mortar, and rebuild the flashing system properly with a reglet cut and new metal. We also install a cricket because the chimney is 34 inches wide.
The chimney stays dry through the rainy season, and the annual caulk ritual is over.
A resident near Loma Alta calls after a windstorm tears a section of counter flashing loose from the chimney.
We treat it as an active leak, get on the roof within 48 hours, re-secure the loose metal, and replace the damaged section with new flashing bent on site. We also check the surrounding shingles for wind damage.
The chimney is watertight before the next storm, and the homeowner avoids a ceiling repair.
Tools And Methods We Use On Every Chimney
Tools & Equipment
Flashing brake and hand seamer
We bend custom counter flashing and crickets on site so the metal matches your chimney's exact dimensions instead of a stock profile that leaves gaps.
Tin snips and utility knife
Used to cut step flashing and trim shingles cleanly during the weave so the new metal seats flat and the shingle courses stay intact.
Caulking gun with polyurethane sealant
We bed every flashing lap and reglet joint in Henry or Oatey polyurethane, which stays flexible through Altadena's heat and rain cycles.
Pry bar and roofing hammer
The pry bar lifts shingles and old flashing without tearing them, and the roofing hammer sets nails flush so nothing punctures the new metal.
Measuring tape and seam roller
We measure overlap and reglet depth to NRCA standards, then roll seams flat so water cannot wick under a lifted edge.
Methods & Techniques
NRCA-compliant two-piece flashing
We install step flashing and counter flashing as separate layers, with the counter flashing cut into the masonry and the step flashing woven into the shingles. This is the standard the National Roofing Contractors Association publishes, and it is why our repairs hold through multiple seasons.
Reglet cutting and sealant bedding
A grinder cuts a 1-inch groove into the mortar joint, the counter flashing seats into it, and polyurethane sealant closes the top edge. The metal now laps into the brick instead of sitting on the surface where wind and thermal movement can lift it.
Cricket fabrication for wide chimneys
Any chimney wider than 30 inches gets a framed cricket on the uphill side, flashed with the same metal as the rest of the repair. The cricket diverts water around the stack so runoff never pools against the masonry.
Water testing before sign-off
We run water at the chimney joint and watch the attic side for drips before we pack up. If anything weeps, we keep working until the joint is dry. No guesswork, no callbacks.
How Chimney Flashing Repair Runs In Altadena
Altadena sits against the San Gabriel Mountains, which means our roofs get more wind-driven rain and more intense summer UV than the flatlands below. That combination destroys flashing sealant faster here than in most of Los Angeles County. Masonry chimneys on the older homes near Historic Highlands and Janes Village were often flashed with hand-cut galvanized steel that has since rusted through, and the counter flashing was frequently surface-caulked instead of cut into the mortar. When you call for a chimney flashing fix in Altadena, we plan for that. We bring copper and galvanized metal, a flashing brake to bend custom pieces on site, and polyurethane sealant rated for the temperature swings this town sees. If your leak is active, we treat it as an emergency chimney flashing fix Altadena call and try to get on the roof within 48 hours. Most repairs finish in a single visit, and we schedule around the rain forecast so the new flashing is not sitting open when the next storm rolls in.
Service Areas
The older masonry chimneys along this stretch often have counter flashing that was surface-caulked decades ago. We cut a fresh reglet and install new metal that actually laps into the brick.
Homes here face the afternoon sun, which bakes sealant joints until they crack. We use polyurethane sealant and copper flashing that tolerate the UV load better than painted steel.
Wide chimneys are common here, so we frequently build and flash a cricket on the uphill side to divert runoff around the stack instead of letting it pool.
Higher elevation means more wind-driven rain. We check step flashing overlap carefully and add extra fasteners where wind has worked metal loose in the past.
These bungalows have compact chimneys that are easy to flash correctly once the old caulk is removed. Most repairs finish in under three hours.
Local Considerations
Wind-driven rain off the San Gabriels
Water gets pushed sideways into flashing joints that would stay dry in a straight-down rain. We bed every lap in polyurethane and cut counter flashing into the mortar so wind cannot lift an edge.
Intense summer UV at higher elevation
Sealant shrinks and cracks faster here than in the flatlands. We use polyurethane instead of silicone and inspect joints during every visit so small cracks get caught early.
Older masonry chimneys with hand-cut flashing
Decades-old galvanized metal is often rusted through and the counter flashing has pulled away from the brick. We replace both layers and cut a new reglet rather than patching over the failure.
Winter storm cycles from November through March
Most leaks show up in the first big storm. We prioritize active leaks and try to get on the roof within 48 hours so the repair happens before the next system arrives.
Rusted Step Flashing Replaced In West Altadena
A homeowner noticed a brown stain spreading on the ceiling beside the chimney after the first storm of the season. The step flashing under the shingles was rusted through in three places, and old roofing cement was smeared over the joints as a previous patch.
We removed the rusted metal, replaced it with new copper step flashing woven into each shingle course, and re-bedded the joints with polyurethane sealant. The repair took three hours, and the ceiling stain stopped growing after the next rain.
Maintenance & Follow-up
Check the flashing joints each fall before the rainy season. If you see cracked sealant or lifted metal, call us before the first storm rather than after.
A 1920s masonry chimney had counter flashing that was surface-caulked to the brick. The caulk had cracked and pulled away, leaving a visible gap where wind-driven rain was entering the attic and dripping onto the chimney chase.
We cut a 1-inch reglet into the mortar joint, bent new copper counter flashing on site, and seated it into the groove with polyurethane sealant. The attic stayed dry through the next three storms, and the homeowner avoided a ceiling repair.
Maintenance & Follow-up
Inspect the reglet sealant once a year. If the top edge of the counter flashing lifts, a quick reseal keeps the joint watertight.
A 34-inch-wide chimney had no cricket on the uphill side, so runoff pooled against the masonry and worked its way under the flashing. The homeowner had been caulking the joint every fall for three years and the leak kept returning.
We framed and flashed a cricket on the uphill side, replaced the step and counter flashing, and sealed every joint with polyurethane. The chimney stayed dry through the rainy season, and the annual caulk ritual ended.
Maintenance & Follow-up
Clear leaves and debris off the cricket each fall so water sheds freely. Check the flashing edges after any windstorm over 40 mph.
Frequently Asked Questions
Have questions? We have answers. If you don't see your question here, feel free to contact us.
Call UsHow much does chimney flashing repair cost in Altadena CA?
Most chimney flashing repairs in Altadena run $350 to $1,800 in 2026, with the average job landing around $650. A simple reseal sits at the low end, while a full rebuild with a reglet cut and a new cricket on a wide masonry chimney sits at the top. We give you a fixed price before any work starts.
Why is my chimney flashing leaking in Altadena, California?
The most common cause is cracked sealant at the flashing joints, followed by counter flashing that has pulled away from the mortar. Altadena's UV exposure bakes sealant faster than in the flatlands, and wind-driven rain off the San Gabriels pushes water into gaps that would stay dry elsewhere. We trace the leak to the exact failure before quoting the repair.
Can you fix chimney flashing leaks in Altadena?
Yes. We repair chimney flashing leaks across Altadena, from West Altadena to Loma Alta, and we treat active leaks as priority calls. Most repairs finish in a single visit of two to four hours, and we water-test the joint before we leave so you know the leak is closed.
Do you offer chimney flashing fix near me in Altadena?
We serve every Altadena neighborhood, including Christmas Tree Lane, Historic Highlands, The Meadows, Janes Village, and Loma Alta. If you are searching for a chimney flashing fix near me in Altadena, call us and we will schedule an inspection, usually within the same week and within 48 hours for active leaks.
Licensed, Certified, And Local
Certifications
Customer Reviews
Our chimney had been leaking into the attic for two seasons and two other roofers just caulked it. Hometown Roof Protectors cut the counter flashing into the mortar and replaced the step flashing properly. No leak since, and they sent photos of the finished work.
Called about a ceiling stain beside the chimney in West Altadena. They came out within two days, found the rusted flashing, and had it replaced in one visit. Price was exactly what they quoted and the crew cleaned up every nail.
We were selling our house near Christmas Tree Lane and the inspector flagged the chimney flashing. The team replaced it in a week and gave us documentation for the disclosure packet. The buyer's inspector cleared it on the follow-up.
Windstorm tore our counter flashing loose near Loma Alta. They treated it as an emergency, got on the roof in 48 hours, and rebuilt the flashing with a new cricket. Worth every dollar to avoid a ceiling repair.
Related Services
Explore our other professional services
Roof Flashing Repair
Chimney flashing is one part of the roof's flashing system. If your leak turns out to be at a valley, wall, or vent, our roof flashing repair crew handles it in the same visit so you are not scheduling a second trade.
Roof Flashing RepairRoof Leak Repair
When a chimney leak has already stained the ceiling or wet the insulation, roof leak repair traces the full path of the water. We fix the flashing and any secondary damage in one coordinated job across Altadena.
Roof Leak RepairSkylight Flashing Repair
Skylights near a chimney often leak at the same time because they share the same UV and wind exposure. We repair skylight flashing with the same materials and standards we use on your chimney.
Skylight Flashing RepairVent Pipe Flashing Repair
Vent pipe boots fail on the same schedule as chimney flashing. If we find a cracked boot during your chimney inspection, we replace it in the same visit so you avoid a second service call.
Vent Pipe Flashing RepairValley Flashing Repair
Roof valleys carry the most water on the roof, and a failure there can look like a chimney leak from inside the attic. We inspect valleys during every chimney flashing job and repair them if needed.
Valley Flashing RepairStep Flashing Repair
Step flashing is the layer woven into the shingles along the chimney sides. It is the first piece we replace in most chimney repairs, and we install it to NRCA overlap standards on every job.
Step Flashing RepairCounter Flashing Repair
Counter flashing covers the top of the step flashing and cuts into the masonry. When it pulls loose, water gets behind the whole system. We cut a new reglet and install fresh metal to close that gap.
Counter Flashing RepairDrip Edge Flashing Repair
Drip edge keeps water off the fascia and sheathing at the roof edges. If your chimney repair reveals a failing drip edge, we replace it while we are on the roof to save you a second visit.
Drip Edge Flashing RepairKickout Flashing Repair
Kickout flashing diverts runoff away from the wall beside a chimney. Missing kickouts rot siding and stucco, so we fabricate and install them during chimney flashing jobs whenever the wall joint needs one.
Kickout Flashing RepairWall Flashing Repair
Where a roof meets a vertical wall, the flashing has to shed water the same way chimney flashing does. We repair wall flashing with the same materials and sealing methods we use on chimneys.
Wall Flashing RepairRoof Flashing Replacement
When flashing is too far gone to repair, we replace the full system. For chimneys, that means new step flashing, counter flashing, and a cricket where the width requires it, all installed in one visit.
Roof Flashing ReplacementEmergency Roof Flashing Repair
Active leaks during a storm get priority scheduling. If your chimney is dripping into the house right now, call us and we will get on the roof within 48 hours to stop the water.
Emergency Roof Flashing RepairRoof Flashing Inspection
A flashing inspection catches small failures before they become ceiling stains. We check the chimney, valleys, vents, and skylights in one visit and give you a written summary with photos.
Roof Flashing InspectionRoof Flashing Maintenance
Annual flashing maintenance reseals joints and re-secures loose metal before the rainy season. It is the cheapest way to avoid a chimney leak and the ceiling repair that follows one.
Roof Flashing MaintenanceRoof Flashing Sealing
When the metal is sound but the sealant has cracked, sealing the joints is a fast, low-cost fix. We strip the old sealant and re-bed the joints with polyurethane rated for roof temperatures.
Roof Flashing SealingMetal Roof Flashing Repair
Metal roofs need flashing details that account for thermal movement. We repair chimney flashing on metal roofs with fasteners and sealants designed for the panel system.
Metal Roof Flashing RepairShingle Roof Flashing Repair
Most Altadena homes have asphalt shingle roofs, and chimney flashing has to be woven into each course. We replace step flashing without tearing the surrounding shingles.
Shingle Roof Flashing RepairTile Roof Flashing Repair
Tile roofs require careful handling so tiles do not crack during the repair. We lift tiles, replace the flashing underneath, and reset the tiles so the roof looks untouched.
Tile Roof Flashing RepairFlat Roof Flashing Repair
Flat roofs use modified bitumen or EPDM flashing details at the chimney. We repair those with compatible materials so the membrane and flashing stay bonded.
Flat Roof Flashing RepairCommercial Roof Flashing Repair
Commercial buildings have chimney and vent flashing that fails the same way residential systems do. We repair commercial flashing with minimal disruption to your business.
Commercial Roof Flashing RepairResidential Roof Flashing Repair
Residential flashing repair is our core work, including chimney flashing on single-family homes across Altadena. We handle everything from a small reseal to a full rebuild.
Residential Roof Flashing RepairStorm Damage Flashing Repair
Windstorms tear counter flashing loose and drive rain into joints. We repair storm-damaged flashing and document the work for your insurance claim if you are filing one.
Storm Damage Flashing RepairRoof Flashing Installation
New flashing installation happens during reroofs and chimney rebuilds. We install step, counter, and cricket flashing to NRCA standards so the new roof starts watertight.
Roof Flashing InstallationCustom Flashing Fabrication
Some chimneys do not fit stock flashing profiles. We bend custom copper and galvanized pieces on site with a flashing brake so the metal matches your chimney exactly.
Custom Flashing FabricationRoof Flashing Leak Detection
When the leak source is unclear, we trace it with water testing and attic inspection. Chimney leaks often turn out to be valley or vent failures, and we find the real source before quoting.
Roof Flashing Leak DetectionGutter Flashing Repair
Gutter flashing and chimney flashing work together to move water off the roof. If your gutter is backing up against the chimney, we repair both so runoff flows where it should.
Gutter Flashing RepairRoof Flashing Waterproofing
Waterproofing flashing joints extends the life of the metal and the sealant. We apply roof-grade sealants and membranes to chimney and wall flashing to keep water out season after season.
Roof Flashing WaterproofingRoof Flashing Repair Near Me
If you are searching for roof flashing repair near me in Altadena, we cover every neighborhood in town. Call us and we will schedule an inspection, usually within the same week.
Roof Flashing Repair Near MeGet Your Chimney Flashing Repair Altadena CA Scheduled
We have been repairing chimney flashing in Altadena since 2020, and we hold a California Contractor License (C-39 Roofing). Call today and we will schedule an inspection, usually within the same week and within 48 hours for active leaks.