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.
HeatShield Chimney Cap Installation: The Woodland Hills Owner’s Guide
A HeatShield chimney cap replacement in Woodland Hills typically runs $385 – $690 installed, including the cap, mounting hardware, and labor. We stock HeatShield-compatible caps on our trucks and can usually complete the swap the same day we come out. Most homeowners discover the problem after a heavy wind storm, when they find metal pieces in the yard, or when critters start making noise in the flue.
The cap sits at the very top of your chimney, exposed to everything the San Fernando Valley throws at it: blazing summer sun, Santa Ana winds, and the occasional wet winter. HeatShield builds theirs from stainless steel with a ceramic coating system, which is great for longevity, but the mounting brackets and mesh screen take a beating over time. When they fail, you’ll know.
Which HeatShield Models This Applies To
HeatShield makes replacement caps for both masonry chimneys and factory-built (metal) chimneys. The two most common series we install in Woodland Hills are the HeatShield SS Series for standard square and rectangular flue tiles, and the HeatShield D-Series for round metal flues, typically 6, 7, or 8 inches in diameter.
Here’s a compatibility gotcha that catches people: HeatShield caps come in standard widths matched to your flue tile dimensions (8×8, 8×13, 13×13, and oval variants), but they ship with a universal mounting flange. If your original cap was factory-installed on a specific manufactured fireplace model, the HeatShield replacement uses a different band clamp than the OEM part. We carry both the strap-style base and the band-clamp base on the truck so we’re not making a return trip.
You can identify your flue size by measuring the outside width of the clay tile or metal pipe at the top, but if you don’t want to get on the roof, we’ll pull dimensions and a photo during the estimate so there’s zero guessing.
One honest note: Hadley Chimney Woodland Hills is an independent chimney service company. We install and service HeatShield products, but we’re not affiliated with the manufacturer. That means no corporate gatekeeping, but it also means we’ll tell you straight if an aftermarket cap from another brand does the same job for less. In our experience, HeatShield’s ceramic-coated stainless caps hold up better than bare stainless in the part of Woodland Hills that sits closest to the 101, where road debris and sun exposure are both harsher.
Styles & brands we work with
Signs Your HeatShield Chimney Cap Installation Is Failing
- Rainwater inside the firebox. You open the damper after a storm and the firebox floor is damp, or you see dark water streaks on the interior masonry. That almost always means the cap’s rain shield or its side screens have failed and water is coming straight down the flue.
- Rust staining on the cap itself. If you can see the cap from the yard and it’s showing orange-brown streaks, the stainless passivation layer has failed. In Woodland Hills, this happens faster on homes near Ventura Boulevard where sprinkler overspray hits the cap repeatedly. Once rust starts, the cap’s structural life is measured in seasons, not years.
- Birds or squirrel activity in the flue. Scratching, chirping, or nesting material visible at the top tells you the mesh screen has a gap. Squirrels in particular will chew through cheap side mesh in about a week. HeatShield’s original screens are tight, but if the cap was installed years ago with a universal fit, the mesh may be long gone.
- Loose or leaning cap after high winds. Santa Ana gusts regularly exceed 50 mph in Woodland Hills. If the cap has shifted off level, the mounting bolts have wallowed out the flue tile or the bracket has fatigued. A leaning cap vents horizontally, which means it’s not doing its job at all.
- Excessive smoke rollout when starting a fire. A partially collapsed cap or clogged mesh restricts draft, which pushes smoke into the room instead of up the flue. This is a sign you shouldn’t ignore. It’s both a functional and a carbon monoxide concern, and we treat it as a priority repair.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a standard single-flue masonry chimney in Woodland Hills, you can count on these numbers:
- HeatShield Standard SS Cap (8×8 to 13×13 flue): $145 – $225 for the part
- HeatShield D-Series Round Cap (6 to 8 inch diameter): $120 – $185 for the part
- Mounting hardware and sealant: $20 – $40
- Install labor (including roof access and safety setup): $130 – $240
- Typical total installed: $385 – $690
What moves you toward the top of that range: a two-story roof with steep pitch, a flue tile that’s cracked around the mounting holes (we’ll seal and reinforce it before mounting), or a custom flue size that isn’t a standard HeatShield SKU. We give you a written price before any work starts, so the number we quote is the number you pay. Every replacement includes a written guarantee and a free second visit if the repair fails within 365 days.
We also carry DuraFlex and Gelco parts for older systems where the original HeatShield cap is discontinued. Same installation process, same guarantee.
DIY or Call Us?
A chimney cap swap is, honestly, less dangerous than a lot of chimney work, but the roof access is the wildcard. If your chimney is on a single-story with a walkable pitch and you’re comfortable on a ladder with tools in hand, a competent DIYer can do the physical swap in about 45 minutes. The part that goes wrong is the mounting: overtightening the band clamp on a flue tile cracks the tile, and then you’ve created a structural repair that costs far more than hiring us in the first place.
What you can safely do: identify your flue type (round metal or square clay), measure rough dimensions, and note visible damage from ground level. What you shouldn’t do: get on a steep two-story roof in Woodland Hills without fall protection, or guess at the cap size. If you’re not certain about roof safety, call us. We’re at (559) 249-1347 and we’ll bring the right cap, the right brackets, and the right gear. You get before-and-after photos so you can actually see what was replaced.
FAQs
A properly installed HeatShield cap with their ceramic coating lasts 10 to 15 years in the Valley climate. Bare stainless caps in the same conditions start showing rust at year five or six, especially on the west-facing side of the house where afternoon sun and smog exposure accelerate oxidation. If your cap is leaning or the mesh is torn, it’s already past its useful life regardless of age.
Sometimes. If the cap body is intact but the screen has pulled away from the frame, we can usually re-secure it with mechanical fasteners rather than replace the whole unit, and that’s a $85 – $140 repair. But if the rain shield has corroded through or the mounting brackets have fatigued, repairing buys you a year at most. At that point, replacement is the honest call. Call (559) 249-1347 and we’ll tell you straight with a photo of the actual damage.
The on-roof work takes 30 to 60 minutes for a standard single-flue chimney in Woodland Hills. The full visit, including setup, the swap, and photo documentation, is usually 90 minutes to two hours. Two-story homes with steep pitches add time because of fall protection setup, not because the cap itself is harder.
We stock the most common HeatShield sizes on the truck: 8×8, 8×13, and 13×13 square, plus 6-inch and 7-inch round. Non-standard sizes or custom oval flues get ordered and arrive within three to five business days. Either way, you get a written price before we order or install anything.
Written by Cory Mitchell, Owner & Lead Chimney Technician, Hadley Chimney Woodland Hills at Hadley Chimney Woodland Hills, serving Woodland Hills and nearby areas.