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 Running Springs, CA | Mantel Chimney Sweep
DuraFlex chimney cleaning in Running Springs means more than clearing soot. We’re an independent service provider working on DuraFlex prefab, liner, and factory-built chimney systems across the 92382 zip code, and the work here is shaped by one reality: snowmelt refreezes inside exterior flues, corroding components flatland sweeps rarely inspect. If your DuraFlex system hasn’t been looked at since before last winter, call Mantel Chimney Sweep at (844) 821-5749 for a Level 2 inspection that checks what mountain weather actually does to stainless liners.
We know DuraFlex components the way a mechanic knows an engine. Our DuraFlex sales & service work covers liners, caps, flashing, and top plates, and we’ve rebuilt enough of them on Running Springs cabins to know exactly where they fail up here. We’re not authorized or sponsored by DuraFlex. We’re independent, which means we repair what’s actually wrong instead of selling you a system you don’t need.
Why Running Springs Residents Choose Us for DuraFlex Service
Roland Vega has spent over a decade cleaning and inspecting chimneys across the Inland Empire, and what he learned at Mt. San Jacinto College still drives how we work: a neglected flue liner can turn a living room into a smoke chamber in one season. That same expertise informs our DuraFlex service in Highland and throughout the mountain region. That’s not a scare tactic. It’s what we see on Running Springs inspections every October, when the first freeze hits and homeowners discover what the snow did to their chimneys.
Most of the DuraFlex systems here are in 1950s-to-1980s mountain cabins and second homes, many converted to wood stoves or inserts. We bring the same careful approach to our Mentone DuraFlex service, where mountain weather creates similar challenges. The exterior chimneys take a beating from freeze-thaw cycles and snow load. We work on the system as we find it, matching DuraFlex-compatible OEM and quality aftermarket caps, top plates, and liner components rather than forcing a rebuild. When a liner is sound, we clean, reseal, and repoint around it. When corrosion or cracked tile has compromised the flue, we tell you straight and quote repair honestly. A clean sweep is the baseline. Repair expertise is the difference.
Styles & brands we work with





Common DuraFlex Chimney Cleaning Problems We Solve in Running Springs
- Corrosion at the liner’s bottom connection. Snowmelt and condensate pool against rusted dampers and fireboxes, and when the temperature drops again, that moisture refreezes against the liner’s lowest seam. We find pitting and thinning here on Running Springs exterior chimneys all winter long.
- Cracked or spalled flue tile behind a DuraFlex liner. On north-facing slopes, meltwater seeps into the masonry chase and refreezes, cracking tiles that flatland crews never see. We inspect for this on every Level 2 call.
- Failed chimney caps and rusted top plates. Snow sitting on a cap all winter corrodes the metal and lets moisture into the flue. That accelerates creosote buildup and shortens the liner’s life. We replace caps and top plates with DuraFlex-compatible parts as a matter of course.
- Liner seams loosening after heating-and-freezing cycles. Mountain homes fire their stoves hot, then the chimney goes cold overnight. That expansion and contraction works seams loose over time, letting creosote and moisture migrate behind the liner. We check seam integrity on every DuraFlex cleaning.
- Heavy glazed creosote from wet, slow-burning mountain wood. Running Springs homeowners burn what’s available, and much of it is pine and fir that hasn’t fully seasoned. That produces dense, tar-like creosote that a standard sweep misses. We remove it with mechanical and chemical methods suited to stainless liners.
DuraFlex Service in Running Springs: What Local Conditions Mean for Your Equipment
Here’s the thing most flatland chimney companies don’t understand about Running Springs. The north-facing slopes of this town, the side that catches less winter sun, have exterior chimneys where snowmelt runs down the stack during the day and refreezes inside the flue at night. That freeze-thaw pattern is brutal on masonry and metal. Our Level 2 inspections on DuraFlex systems up here routinely turn up cracked flue tile and rusted dampers that a sweep in Moreno Valley or Loma Linda would never think to check. It’s not creosote volume that drives our recommendations in Running Springs. It’s water. Specifically, water that freezes, expands, and finds every weak seam in your liner and every hairline crack in your crown. That’s why Running Springs service area work always includes a waterproofing assessment, even on a routine cleaning. If your chimney cap failed last winter and you didn’t know, you don’t have a dirty chimney. You have a wet one, and wet means corroded by the time spring arrives.
DuraFlex Models & Products We Service in Running Springs
We work on the full DuraFlex lineup that shows up in mountain homes around here. The DuraFlex Stainless Steel Chimney Liner, both insulated and uninsulated, is the workhorse in converted masonry fireplaces. The DuraFlex Pro Flexible Flue Liner kits come through in wood-stove and insert retrofits. We also service DuraFlex factory-built chimney and venting components, including caps, flashing, and top plates, plus the rigid stainless relining sections used when a flexible liner isn’t the right call. When a cap is rusted or a top plate has corroded through, we match DuraFlex-compatible OEM or quality aftermarket parts to the existing system. We don’t stock every component for every model, but we keep common Running Springs replacement parts on the truck so most repairs happen in one visit. For the rest, we order and return within days, and we’ll tell you upfront which category your repair falls into.
See the difference
Before
After
Before
After
Before
AfterDuraFlex Service Pricing in Running Springs
DuraFlex chimney cleaning in Running Springs typically runs between $180 and $340 depending on creosote volume, liner condition, and access. A Level 2 inspection, which we recommend for any system that’s gone two winters without service or shows signs of cap or flashing failure, adds $150 to $300. Chimney waterproofing runs $250 to $500 depending on stack height and surface area. Cap and top plate replacement ranges from $150 to $450 with parts. If we find liner corrosion or cracked tile that requires relining, we’ll quote that separately after the inspection, and we’ll show you the camera footage so you’re not taking our word for it. Estimates are free. Call (844) 821-5749 for an exact quote on your Running Springs system.
Serving Running Springs, CA — Our Local Coverage Area
We’re based in the Running Springs area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help. We also provide DuraFlex service in Lake Arrowhead, Highland, and surrounding mountain communities.
FAQs – DuraFlex Chimney Cleaning in Running Springs
A basic sweep clears soot and creosote from the accessible flue. A Level 2 inspection adds video scanning of the liner’s interior, an assessment of the cap, top plate, flashing, and crown, and a check of the masonry chase around the liner. In Running Springs, that’s where we find the freeze-thaw damage: cracked tiles, rusted dampers, and corroded connections that a brush alone never reveals. If you haven’t had one in two seasons, call (844) 821-5749 to schedule it with your next cleaning.
No. We’re an independent service provider, not authorized, sponsored, or endorsed by DuraFlex. That independence matters. We’re not here to move product. We diagnose what your existing system actually needs, match compatible OEM or quality aftermarket parts when something’s failed, and tell you plainly when a repair can wait.
Both, depending on what’s available and what fits your system best. We match DuraFlex-compatible OEM caps, top plates, and liner components where the original part is the right call. When a quality aftermarket equivalent performs identically and gets your Running Springs chimney back in service faster, we’ll use that and tell you why. We never patch a liner with something that isn’t rated for the application.
We handle the Stainless Steel Chimney Liner in both insulated and uninsulated configurations, Pro Flexible Flue Liner kits, factory-built chimney and venting components like caps and flashing, and the rigid stainless relining sections used in wood-stove retrofits. Most Running Springs cabins have one of these four setups. If yours is different, call and we’ll tell you whether it’s something we service.
Most DuraFlex cleanings here land between $180 and $340. What changes the price is creosote accumulation from wet mountain wood, how many elbows and offsets your liner has, and whether we’re also dealing with cap or top plate damage. The exact quote comes after we see the system. Call (844) 821-5749 and we’ll give you a number based on what you’ve got, not a generic chart.
Service Areas Near Running Springs
We handle DuraFlex cleaning and repair for Running Springs and the surrounding mountain and foothill communities. You’ll often find us working in Moreno Valley, March Air Force Base, Loma Linda, Highgrove, Mead Valley, and Grand Terrace, which means if you have a cabin up here and a home down the hill, one call covers both. For DuraFlex work in the pass area, see our DuraFlex service in Banning and DuraFlex service in Sedco Hills pages.
Book Your DuraFlex Service in Running Springs Today
The first snow doesn’t wait for your chimney to be ready. Call Mantel Chimney Sweep at (844) 821-5749 for a free estimate on DuraFlex cleaning, inspection, or repair in Running Springs. We also handle DuraFlex repair in Crestline and nearby communities. We’ll get your system safe before the fires start.
Written by Roland Vega, Owner at Mantel Chimney Sweep, serving Running Springs and the San Bernardino Mountains. A clean chimney isn’t a luxury – it’s just the part of the house you can’t see until something goes wrong.