Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
DuraFlex Chimney Cap Installation: The Woodland Hills Owner’s Guide
If your DuraFlex chimney cap is rusted through, missing, or letting rain pour down your flue, we install DuraFlex-compatible chimney caps in Woodland Hills for roughly $350 to $650 installed, and we can usually do the swap the same week. The cap is the metal lid assembly that sits on top of your chimney crown and keeps water, birds, and burning embers out while still letting smoke escape. Most Woodland Hills homeowners discover theirs has failed after a rainstorm when water starts streaking down the firebox walls, or when they hear something fluttering around inside the flue.
The good news: a chimney cap failure is one of the more straightforward fixes we do. The bad news if it’s ignored: water intrusion is the number one killer of chimney systems in Southern California, because moisture works on the mortar, the brick, and the liner itself long after the rainy season ends. A rusted cap doesn’t just sit there quietly. It actively shortens the life of everything below it.
Which DuraFlex Models This Applies To
DuraFlex is a flexible stainless steel chimney liner system, and the cap assemblies that pair with it are sized to the liner’s inside diameter, not to the outside of your existing clay tile. That’s the first gotcha. If you’ve got a 6-inch DuraFlex liner, you need a cap sized for a 6-inch liner, not a cap meant to clamp over a standard 8×8 clay flue. The second gotcha is the connection method: DuraFlex liner tops typically use a clamp-on cap connection rather than the slide-in style you’ll see on rigid pipe. Getting this wrong means the cap sits crooked or wobbles loose within a season.
We keep common DuraFlex-compatible cap sizes on the truck, including 5.5-inch, 6-inch, and 7-inch, for both round and oval liner terminations. If your setup needs a custom fabrication because the crown is unusually wide or the liner sits at an odd angle, we measure on site and have it made locally. DuraFlex is the brand we work with most often for flexible liner work, and we also stock parts for HeatShield and Gelco systems when the liner itself is the issue.
Styles & brands we work with
Signs Your DuraFlex Chimney Cap Installation Is Failing
- Water stains running down the firebox walls after rain. This usually means the cap’s spark arrestor mesh has rusted through or the cap has shifted, letting water come straight down the liner. We see this most often in Woodland Hills homes built in the 1960s and 70s where the original caps are long gone.
- Bird noise or nesting material inside the chimney. A failed cap with a damaged mesh screen is an open invitation for starlings and sparrows, and in the Warner Center corridor we see a lot of it. The nest material is also highly flammable once it dries out.
- Rust streaks or flaking metal on the cap itself. If the cap looks like rusted lace from the ground, it’s done. Woodland Hills gets enough moisture from morning marine layer and winter rains that galvanized caps rust out faster than people expect, usually in 8 to 12 years.
- Embers exiting the chimney top while the fireplace is lit. The spark arrestor mesh is designed to stop that. If you see sparks coming off the top, the mesh is gone or the cap has separated from the liner.
- A visible gap between the cap and the chimney crown. Caps can get knocked loose by tree work, wind, or a curious raccoon. Once a gap opens, the cap is no longer doing anything except sitting there looking like it might.
Replacement Cost & What’s Included
For a standard DuraFlex-compatible chimney cap installation in Woodland Hills, budget $350 to $650 installed. The lower end covers a basic stainless cap with a mesh spark arrestor on a straightforward single-flue setup. The upper end includes custom-fitted caps for odd-sized liners, multi-flue caps, or situations where the crown needs minor patching before the cap can be secured properly.
Every DuraFlex cap install we do includes the new cap, the mounting hardware, removal of the old cap, inspection of the top few inches of the liner for hidden water damage, and a written price before any work starts. If we spot liner damage while we’re up there, we’ll take a photo and show it to you on site before recommending anything further. The installation itself carries our written 365-day guarantee, and if something fails within that year, the second visit is free. That guarantee is part of the Relay Home Co. standard, not an upsell.
See the difference
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AfterDIY or Call Us?
Here’s the honest split. If you can safely access your roof with a proper ladder and you’re comfortable working at height, you can absolutely inspect your existing cap from the roof edge. Look for rust, gaps, or loose clamps. You can take a photo and send it to us, and we’ll tell you whether it’s worth replacing. What we don’t recommend is doing the actual cap swap yourself, and not because we’re protective of the work. The danger is specific: you’re on a roof, often a steep one in the hills above Ventura Boulevard, leaning over a chimney opening. Chimney caps require a secure mechanical connection to the liner lip, and if that connection isn’t right, the cap becomes a projectile in the next Santa Ana wind event. That’s a risk to your neighbors and your roof.
We handle the whole job. When we arrive, the tech checks the liner top for any cracking, verifies the size against the actual liner diameter, swaps the cap, and documents everything with before and after photos. You get a digital invoice you can pay from your phone the moment the job is done. Call (559) 249-1347 and we’ll get you on the schedule.
FAQs
A good stainless steel cap typically lasts 10 to 15 years in Woodland Hills, though galvanized caps can rust out in 8 to 12 years given the marine layer moisture and winter rains. Woodland Hills doesn’t have the salt air of coastal L.A., but the seasonal moisture cycle still does a number on cheaper metal. If your cap is over a decade old and showing rust, it’s close to done. Call (559) 249-1347 and we’ll give you an honest assessment.
Sometimes, but usually not worth it. If a single clamp or bolt is loose, we can tighten it. But if the mesh is torn or the metal has rusted through in any spot, patching it is a temporary fix at best. A rusted-out cap means the protective coating is gone, and the rust will continue spreading underneath any patch. For a cap that’s structurally intact with only a minor issue, repair makes sense. Otherwise, replacement is the cheaper long-term answer. We’ll show you photos either way before you spend a dollar.
Most single-flue cap installations take 45 minutes to an hour once we’re on the roof. That includes removing the old cap, inspecting the liner top, mounting the new cap, and taking documentation photos. If the crown needs patching or we’re installing a multi-flue cap, plan on up to two hours. You’ll know the exact price and scope before any work starts, and you’ll see the finished work in your photo report before we leave the driveway.
Yes. We keep common 5.5-inch, 6-inch, and 7-inch stainless caps with mesh spark arrestors on the truck, along with the mounting hardware for DuraFlex liner terminations. If your chimney needs an unusual size or a custom configuration for a wide crown or odd liner angle, we measure on site and order it locally, usually with a few days turnaround. Either way, you’ll know which path applies to your home before we book the install.
Get a Straight Answer on Your DuraFlex Chimney Cap
If your cap is failing and you’d rather see the problem than guess at it, Cory Mitchell will show you the photo on his phone and explain exactly what needs to happen before anyone picks up a tool. No vague explanations, no surprise pricing at the door. Call (559) 249-1347 and talk to a live person, any hour, and we’ll get your Woodland Hills chimney capped right the first time.
Written by Cory Mitchell, Owner & Lead Chimney Technician, Hadley Chimney Woodland Hills at Hadley Chimney Woodland Hills, serving Woodland Hills and nearby areas.