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 Claremont, CA | San Bernardino Chimney Sweep
We provide independent DuraFlex chimney cleaning and repair across Claremont, and offer DuraFlex in Montclair as well, and most of the systems we open up show one of two things: wind-driven debris from the foothills or liner issues tied to the age of the house. Our crews work on DuraFlex stainless liners, caps, and crown components in 91711 and the surrounding historic tracts, and what sets us apart here is simple. We know how DuraFlex equipment fails in Claremont specifically, because we’re the ones pulling palm fronds, dented caps, and cracked clay tile out of these flues every season. If you own a DuraFlex-lined fireplace in Claremont, call (877) 516-7159 for a straight answer and a free estimate.

Why Claremont Residents Choose Us for DuraFlex Service
DuraFlex is contractor-grade equipment, and it deserves a technician who treats it that way. We stock OEM-compatible DuraFlex components for liner terminations, cap replacements, and crown repairs, so a service call doesn’t stall out waiting on parts. Allen Prescott, who leads our team, grew up near the Kendall Drive corridor in San Bernardino and has spent the better part of three decades working on Inland Empire chimneys and fireplaces, including DuraFlex service in La Verne. He’ll tell you plainly what’s in your flue and whether it actually needs fixing now. That candor matters in Claremont, where so many fireplaces sit inside pre-1960s masonry that predates modern liner standards.
We’re a specialist, not a generalist. Chimney and ventilation work is all we do, which means a DuraFlex inspection here isn’t a side errand for a handyman with a shop vac. We find it and we fix it, same visit, whether it’s a loose appliance collar on a gas insert conversion or a wind-fatigued cap. And because we carry the DuraFlex parts Claremont homes actually need, we’re usually in and out in a single trip. Our DuraFlex sales & service work covers the full range, and we apply that same depth of focus on every job in the 91711 zip code.
Styles & brands we work with





Common DuraFlex Chimney Cleaning Problems We Solve in Claremont
DuraFlex systems are well built, but Claremont’s climate and housing stock create a specific set of failures. These are the five we see repeatedly:
- Torn insulation blankets on DuraFlex Pro Series liners. When a homeowner or a discount sweep runs a brush too aggressively through an insulated flex liner, the ceramic blanket tears away from the stainless wall. In older Claremont bungalows with narrow offsets in the masonry, that tear is nearly impossible to spot from the firebox. The result is a hot spot against the original brick and a chimney that drafts unevenly. We catch this during cleaning because we inspect as we sweep, not after the fact.
- Loose fittings at the gas insert appliance collar. Many 1920s through 1950s Claremont homes originally burned wood, then converted to gas inserts decades later. A DuraFlex liner that wasn’t properly re-seated during conversion works loose at the appliance connection. Exhaust seeps into the living space instead of drawing up the flue, which homeowners often misread as a simple draft problem. It’s a common call in the Village and surrounding tracts, and it mimics a blocked chimney.
- Wind-fatigued DuraFlex caps and crowns after Santa Ana events. The wind that funnels down from the San Gabriels doesn’t just rattle roof tiles. It shears fasteners, bends cap housings, and leaves connectors hanging by a thread. We’ve pulled caps off Claremont chimneys that were barely attached. The repair is straightforward when caught early, but if the owner ignores it and lights a fire, the loose cap can drop or the exposed flue can admit down-drafts and embers.
- Debris packing above the cap screen. Palm fronds, sycamore leaves, and foothill dirt ride Santa Ana gusts straight into chimneys. The debris collects above the DuraFlex screen and forms a mat that chokes the flue before it ever reaches the liner. In the fall, right before the first cold snap, this is the single most common call we run in Claremont. The liner itself is usually fine; the intake isn’t.
- Cracked and spalled clay tile around the DuraFlex liner. Original clay tile in 1920s – 1950s masonry fireplaces goes through decade after decade of heat cycling. When the tile cracks or flakes away, the flex liner routed inside loses its support, especially at offsets. We see this in Claremont’s Craftsman and Spanish Revival homes regularly, and it matters because an unsupported liner kinks, which turns a minor draft complaint into a full relining conversation.
DuraFlex Service in Claremont: What Local Conditions Mean for Your Equipment
Claremont’s historic-preservation stance changes how DuraFlex work gets done here, and it’s the single biggest difference between this city and its neighbors like those seeking DuraFlex repair in Upland. Because visible exterior changes to Spanish Colonial Revival and Craftsman chimneys are often restricted, the work moves inside the flue. So when a liner needs routing or a crown needs structural repair, we do it without touching the outside silhouette. DuraFlex relining is, in most cases, an interior solution by design, which makes it unusually well suited to Claremont’s architectural envelope. On a 1928 Spanish Revival home near the Claremont Village, we pulled a DuraFlex cap that had been dented and partly torn loose by a Santa Ana wind event, and found the flue packed with palm-frond debris and a cracked original clay tile above the liner offset. Our tech re-seated the DuraFlex liner, replaced the cap with an OEM multi-flue unit, and swept glazed third-degree creosote from the firebox throat without altering the exterior stucco. The homeowner passed Level 2 inspection paperwork the same visit. That’s the job description around here: fix what’s inside so the house still looks like Claremont from the street.
DuraFlex Models & Products We Service in Claremont
We service the full DuraFlex product family, including the Stainless Steel Flexible Chimney Liner Kits in round and oval profiles, the Pro Series Insulated Liner Kits, Rain Caps and Multi-Flue Caps, and Crown and Flashing Components. When a repair calls for a termination, cap, or crown, we use OEM DuraFlex so the system’s rating stays intact. For fasteners and sealants, we’ll use quality aftermarket parts where OEM adds nothing but cost. Our approach matches what each home actually needs. If the DuraFlex liner is sound but the cap or top plate took wind damage, we repair. If the liner itself is breached or deformed, we recommend replacement rather than patch, especially on pre-1960s Claremont homes where the surrounding clay tile is already compromised and won’t carry the load. We keep common DuraFlex cap, flashing, and termination components stocked locally so Claremont service calls move quickly.
See the difference
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AfterDuraFlex Service Pricing in Claremont
What you pay depends on what the flue needs when we open it. A basic sweep and inspection on a lightly used DuraFlex liner in Claremont runs lower than a job that involves cap replacement after a Santa Ana event or relining through cracked clay tile. Free estimates include a camera inspection of the liner and a written list of what we found and what can wait. We don’t recommend work without camera evidence you can see for yourself, and we’re equally direct when a chimney is fine and just needs its annual cleaning. Call (877) 516-7159 for an exact quote on your home. Estimates are free, and we’ll tell you straight if the liner can stay or if it’s time to replace it.
Key takeaways for Claremont DuraFlex owners: Santa Ana debris blocks caps before liners fail. Torn insulation is common after aggressive sweeping. Gas insert conversions loosen appliance collars. Historic homes need interior flue solutions, not exterior changes. We inspect and repair in one visit, with OEM DuraFlex parts.

Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont area and know this community well, and we also provide DuraFlex service in San Antonio Heights. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – DuraFlex Chimney Cleaning in Claremont
Yes, if the liner is in sound shape and properly supported by the surrounding clay tile. We use brushes sized for the liner’s profile and inspect the insulation blanket and seams as we go. The larger issue in Claremont Craftsman homes is when the original clay tile has cracked and the DuraFlex liner is no longer supported. In that case, sweeping won’t damage the liner, but the liner needs addressing anyway. Call (877) 516-7159 and we’ll camera the flue before any brush work.
Don’t light the fire until someone removes the debris and checks the cap attachment. Bent or loose DuraFlex caps after Santa Ana wind events in Claremont are a recurring fall call, and the debris above the cap screen is often packed deep enough to block the flue entirely. We remove the debris, re-seat or replace the cap with OEM DuraFlex hardware, and sweep the liner before you strike a match. Call (877) 516-7159 for an estimate.
That smell is usually exhaust spillage from a loose connection where the DuraFlex liner meets the appliance collar, not a dirty flue. When a fireplace was converted from wood to gas, the liner fitting often wasn’t re-tightened, and it works loose over time. The exhaust seeps into the room instead of drawing up the flue. We check that connection during any Claremont cleaning visit and secure it with the correct hardware. Call (877) 516-7159 to schedule a look.
Yes. Claremont’s historic-preservation rules often restrict visible exterior chimney changes, so we size the DuraFlex cap to fit inside the existing footprint and match the flue profile without altering the exterior silhouette. The multi-flue cap options are especially useful on Spanish Revival homes where the chimney opening spans more than one flue. The replacement stays off the curb-appeal radar. Call (877) 516-7159 and we’ll show you photos of similar Claremont installs.
Annually is a sound baseline even when the fireplace only sees occasional use, because Claremont’s Santa Ana season packs the flue with debris that blocks the liner even if creosote is minimal. So skip the sweep and you risk a debris-choked flue before the first cold night. Level 2 inspection typically rides along with the cleaning, which also keeps your DuraFlex warranty-adjacent maintenance record current. Call (877) 516-7159 to book your annual sweep.
Service Areas Near Claremont
Our DuraFlex service also reaches Rubidoux, San Bernardino, Colton, Muscoy, Loma Linda, and Rialto. If you’re in a neighboring community with a DuraFlex chimney system, see our Claremont service area page for coverage details, or visit DuraFlex service in Los Serranos and DuraFlex service in Romoland if those locations are closer to you.
Book Your DuraFlex Service in Claremont Today
We’re scheduling fall cleanings now, before the next Santa Ana event packs the flues. Call (877) 516-7159 for a free estimate and a straight answer on your DuraFlex system’s condition. We’ll inspect, sweep, and fix what we find, all in one visit.
Written by Allen Prescott, Owner at San Bernardino Chimney Sweep. A clean flue isn’t a luxury – it’s just how you keep the fire where it belongs.