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 Cleaning in Florence-Graham, CA | Walnut Chimney
We provide independent DuraFlex chimney cleaning and repair service across our Florence-Graham service area, including the 90001 ZIP. What makes our work different here is simple: we know how DuraFlex liners age inside the small, pre-war masonry flues that fill this neighborhood. If you own a home in Florence-Graham with a DuraFlex system, call Walnut Chimney at (855) 341-3461 and we’ll tell you exactly what’s going on up there.

Why Florence-Graham Residents Choose Us for DuraFlex Service
Florence-Graham is dense, unincorporated LA County. The homes are mostly 1920s through 1950s stucco bungalows on narrow lots, many with original brick fireplaces and clay-tile flues that got a DuraFlex liner years ago and haven’t been touched since. We’ve worked on hundreds of these systems across South LA — from DuraFlex in Huntington Park to liners here in Florence-Graham — and the failures follow a pattern. Creosote glaze. Nest blockage at the cap. Corrosion at the liner-to-cap joint. Russ Dempsey, our owner, grew up off Amar Road in Walnut and has been working flues in this part of LA County for close to two decades. He trained in the HVAC program at Citrus College before spending years on fireplace retrofits in older ranch homes across the San Gabriel Valley. When a Florence-Graham homeowner calls about a DuraFlex liner that has been capped and forgotten, we already know what we’re probably going to find.
Styles & brands we work with





Common DuraFlex Chimney Cleaning Problems We Solve in Florence-Graham
- Creosote glaze buildup in DuraFlex liners. Florence-Graham winters are short and cool, so fireplaces get used in bursts – a few weeks of occasional wood fires, then nothing for months. That stop-start burning produces a hard, glassy creosote that standard sweeping won’t always remove. We use professional-grade removal methods on DuraFlex Pro and DuraFlex SW liners specifically.
- Corrosion at the liner-to-cap connection. The Santa Ana winds push hot, dry, dust-laden air through Florence-Graham in late summer and fall. Over time, that grit works its way into the cap-to-liner joint. Add a little coastal moisture from the basin, and the connection starts to corrode. We inspect this joint on every DuraFlex service call.
- Damper and firebox assembly wear. A lot of Florence-Graham fireplaces were capped and forgotten years ago. The damper sits in the same position season after season, rusting or seizing. We service the full assembly, not just the flue, because a DuraFlex liner only performs as well as the firebox components below it.
- Nest and debris blockage in tight 1920s-1950s flues. The original clay-tile flues in Florence-Graham are narrow. When a DuraFlex liner is installed inside one, the clearances get even tighter. Birds and rodents find their way through damaged chase tops or missing caps, and the resulting blockage is common. We’ve removed nests, squirrel debris, and years of accumulated soot from these cramped spaces.
- Improper or missing caps on DuraFlex systems. A liner without the right cap is just an open pipe. We install multi-flue caps and top-mount dampers sized correctly for the liner diameter, not whatever was on sale at the hardware store.
DuraFlex Service in Florence-Graham: What Local Conditions Mean for Your Equipment
Here’s the thing most chimney companies won’t explain, and it matters if you own a DuraFlex system in Florence-Graham. This is unincorporated LA County territory. That means any relining or structural repair work does not go through a city building department. It falls under Los Angeles County building and permitting jurisdiction. We navigate this routinely for homeowners here, because the difference changes what a repair actually costs and how long it takes. A homeowner near Graham Avenue with a damaged DuraFlex Insulated Liner isn’t just paying for the liner. They’re paying for the County permit process, the inspection scheduling, and the paperwork. We handle that end-to-end. If the flue is clean and the draft is right, everything else takes care of itself. But around here, getting there sometimes means knowing which County counter to call.
DuraFlex Models & Products We Service in Florence-Graham
We service the full DuraFlex residential lineup: DuraFlex Pro, DuraFlex SW, DuraFlex Insulated Liner, and DuraFlex Stainless Steel Liner. When critical connections need parts – caps, dampers, connection hardware – we use OEM DuraFlex components. For generic hardware like fasteners and simple brackets, we use quality aftermarket parts. The distinction keeps costs sensible without compromising the liner’s integrity. We typically stock common DuraFlex connector sizes and caps for faster turnaround across Florence-Graham. For a broader look at our DuraFlex work, see our DuraFlex sales & service page.
See the difference
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AfterDuraFlex Service Pricing in Florence-Graham
What you pay depends on what we find. A standard DuraFlex cleaning with an inspection in Florence-Graham will run less than a job that requires cap replacement, damper repair, or partial liner removal. The factors that drive cost are liner diameter, flue height, access difficulty on these older bungalows, and whether any County permitting applies. A free estimate means we come out, look at the system, and tell you exactly what’s needed – with a breakdown, not a lump-sum surprise. If you’re wondering what a specific repair might cost, call (855) 341-3461 and we’ll get you a real number.
Serving Florence-Graham, CA — Our Local Coverage Area
We’re based in the Florence-Graham area and know this community well, with DuraFlex service in Walnut Park and nearby neighborhoods. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – DuraFlex Chimney Cleaning in Florence-Graham
Yes. Florence-Graham is unincorporated, so liner replacement and most structural repairs fall under Los Angeles County building jurisdiction, not a city department. We handle the permit process for you. Call (855) 341-3461 and we’ll walk through what your specific job requires.
Once a year if you burn wood, even occasionally. The short, cool Florence-Graham winters create stop-start burning patterns that produce stubborn creosote glaze. Annual cleaning keeps that from becoming a fire hazard. Call (855) 341-3461 to schedule.
Rust stains near the cap, a smoky smell when the fireplace is not in use, visible corrosion at the liner-to-cap connection, or debris falling into the firebox all point to liner problems. If you see any of these, get a Level 2 inspection. Contact us at (855) 341-3461 for a free assessment.
Yes. We install OEM DuraFlex caps sized to your liner diameter, including multi-flue caps for older Florence-Graham flues where multiple liners share one chase. Call (855) 341-3461 for exact cap options and pricing.
If your liner has been capped and unused for more than a year, or if you just bought a Florence-Graham home with an older DuraFlex system, yes. A Level 2 inspection uses camera equipment to check what is inside the liner, not just what is visible from the firebox. We include this on most first-time service calls. Call (855) 341-3461 to schedule.
Service Areas Near Florence-Graham
We also provide DuraFlex chimney cleaning for homeowners in nearby communities, including DuraFlex service in Covina and DuraFlex service in Pomona. Our technicians cover the broader South LA and eastern county area, so if you’re just outside the 90001 grid, call and ask. Chances are we’re already working your street.
Book Your DuraFlex Service in Florence-Graham Today
If your DuraFlex liner has been capped and forgotten, or you’re seeing signs of creosote, rust, or nesting, don’t wait for the next fire season — whether you’re in Florence-Graham or need Willowbrook DuraFlex service. Call Walnut Chimney at (855) 341-3461 for a free estimate. We’ll tell you what’s going on, what it costs, and whether it can wait. Usually, it can’t.
Written by Russ Dempsey, Owner at Walnut Chimney, serving Florence-Graham and the surrounding South LA area.