Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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 Fireplace Repair in San Jose: What to Know First
We provide independent DuraFlex fireplace repair in San Jose, and most jobs are completed in a single visit once parts are in hand. You can expect a written price before any work begins, a written guarantee when the job is done, and a straight answer about whether your DuraFlex component can be repaired or should be replaced. The honest price posture is this: we don’t quote over the phone sight-unseen, but most DuraFlex fireplace repairs in San Jose land between $225 and $1,900 depending on whether we’re replacing a pilot assembly, a damper plate, or a full liner section.
This page is for homeowners in San Jose, Campbell, Los Gatos, and surrounding neighborhoods who own a DuraFlex fireplace system, a DuraFlex liner, or a fireplace that was serviced with DuraFlex components and now needs repair. If your fireplace won’t light, won’t stay lit, smells like gas, or the damper won’t close, call (669) 266-5073 and we’ll get you on the schedule.
How DuraFlex Products Fail – and How We Fix Them
DuraFlex makes two product families that show up in San Jose fireplaces: flexible stainless steel chimney liners (the Pro and 316 series) and aluminum liners meant for gas appliances. Most fireplace-specific issues we see involve liners, but we also repair fireplaces and inserts that use DuraFlex venting connectors. Here’s what we actually see in the field:
- Pinholes and seam splits in DuraFlex Pro liners on wood-burning fireplaces. The Pro series is a two-ply liner with a smooth inner wall. In older San Jose homes near Willow Glen and the Rose Garden where fireplaces burned heavily for years before a liner was installed, we see inner-wall corrosion at the corrugation peaks. Creosote holds moisture against the steel, and over time the inner ply develops pinholes. The symptom is usually a faint smoky smell in the room even when the fire is out, or draft performance that got gradually worse. Fix: a full or partial liner replacement with new DuraFlex Pro, properly sized and insulated.
- Improper terminations on DuraFlex aluminum liners for gas fireplaces. The aluminum liner itself rarely fails, but the termination cap and storm collar installed with it often do. In San Jose’s wet winters, a storm collar that wasn’t sealed correctly lets water run down the outside of the liner into the firebox. The homeowner sees rust staining inside the fireplace or water in the bottom of the firebox after rain. Fix: reseal or replace the termination, check the liner for water damage, and correct the flashing detail so it doesn’t happen again.
- Crushed or kinked flex sections from original installation. We see this on both DuraFlex Pro and 316 series liners that were pulled through chimneys with tight offsets. A kinked liner restricts draft and creates a creosote trap that can’t be swept clean. The symptom is poor draft and a fireplace that smokes back into the room after twenty minutes of burning. Fix: remove the damaged section and splice in new DuraFlex with the correct connector, or replace the run entirely if the offset is too severe.
- Fireplace damper plates that bind against DuraFlex connector collars. When a fireplace is retrofitted with a DuraFlex liner, the connector at the appliance collar sometimes interferes with the original damper assembly. We regularly see dampers that won’t fully close because the liner connector sits proud of the damper frame. The homeowner notices the damper handle won’t seat, or cold air pours down the chimney in winter. Fix: adjust the connector height, or install a top-sealing damper that eliminates the conflict entirely.
- Gas fireplace pilot assemblies clogged by debris from failing liner insulation. This is one we see in San Jose at higher elevations like Almaden Valley. When a DuraFlex liner’s insulation wrap degrades, small particles can fall into the firebox and clog the pilot orifice or the thermopile. The fireplace won’t stay lit, or the pilot is weak and yellow. Fix: clean or replace the pilot assembly, then address the insulation issue upstream so it doesn’t recur.
Styles & brands we work with
Our DuraFlex Fireplace Repair Process
Every DuraFlex job follows the same five steps, and I’ll walk you through each one before the work starts. That’s how we’ve done it since 2002, and it’s why our customers know exactly what they’re paying for.
- 1
You call, a live person answers. We take the details of what the fireplace is doing and how old the DuraFlex component is. We’ll ask for photos if you have them. You get a real arrival window, not “sometime between 8 and 6.”
- 2
We show up and diagnose. The technician inspects the fireplace, the DuraFlex liner and termination if applicable, and the gas or wood fuel system. For gas fireplaces, we check the pilot, thermopile, gas valve, and burner. For wood-burning, we look at the liner interior with a camera if needed.
- 3
You get a written price before anything is ordered or removed. If the repair needs parts, we identify whether DuraFlex OEM parts make sense or whether a quality aftermarket equivalent from a trade supplier does the job without hurting warranty coverage. We explain the difference and let you decide.
- 4
We do the work and test it. Gas fireplaces get a full pilot cycle test and flame impingement check. Wood-burning repairs get a draft test. We don’t pack up until the fireplace behaves the way it should.
- 5
The guarantee goes in writing. Every repair is covered by our 365-Day Done Right Promise. If the repair fails inside the guarantee period, we come back and make it right at no charge. You get that in writing before we leave.
What DuraFlex Fireplace Repair Costs in San Jose
Most DuraFlex-related fireplace repairs in San Jose run between $225 and $1,900 depending on what failed. Here’s the honest breakdown:
- Pilot light or thermopile repair: $225 – $385. Parts are usually the small cost; labor and testing drive the price.
- Damper repair or replacement (top-sealing): $340 – $720. Includes adjusting or replacing the connector if the DuraFlex liner is interfering.
- Firebox repair (cracks, mortar joints, refractory panels): $450 – $1,300. Depends on the extent of the damage and whether refractory panels need replacing.
- Gas fireplace insert service (burner, valve, wiring, remote): $275 – $900. A bad gas valve on the higher end; a simple burner clean on the lower.
- Partial DuraFlex liner replacement: $900 – $1,900. Higher if scaffolding or steep roof access is needed, which is common in San Jose neighborhoods with two-story homes like Evergreen and Silver Creek.
What moves the price: roof access difficulty, whether the fireplace is gas or wood-burning, whether the DuraFlex liner itself is involved, and whether we find secondary damage once we’re inside. We give you the written number before we start, and the number on the invoice matches. Call (669) 266-5073 for a free estimate.
See the difference
Before
After
Before
After
Before
AfterWhy San Jose Homeowners Call Ashby Chimney San Jose for DuraFlex Work
We’ve been working chimneys across the South Bay since 2002, and DuraFlex components have been a part of that work for years. I grew up in Los Angeles and got my trade training at LA Trade Tech before spending the better part of two decades in chimneys up and down California. These days our crew works San Jose from the ranch homes in Willow Glen to the newer builds downtown, and DuraFlex repairs come up regularly.
The reason homeowners call us instead of the lowest bid comes down to the Kingswell Way: say the price first, explain the work, put the promise in writing. Every DuraFlex repair is covered by the 365-Day Done Right Promise. If it’s not done right, we make it right, and that includes a free second visit if the repair fails. Our techs are background-checked and uniformed, so you know exactly who’s walking into your house. And when DuraFlex isn’t the right material for a particular repair, we carry alternatives like HeatShield and Gelco so the fix matches the problem, not whatever’s in the van.
FAQs
No, we’re an independent DuraFlex service provider in San Jose, not an authorized or affiliated DuraFlex contractor. That said, we install and repair DuraFlex products regularly, source parts from established chimney-trade suppliers, and follow DuraFlex’s published installation and repair guidelines. Being independent means we can recommend what’s actually right for your fireplace, including alternatives like HeatShield or Gelco when they’re the better fit.
It depends on what’s wrong and how it’s repaired. A splice using genuine DuraFlex connectors and hose clamps installed to spec generally keeps warranty coverage intact for the unaffected sections. A patch with sealant or non-DuraFlex components may not. We’ll tell you before we touch anything whether the repair is warranty-safe, and we’ll put that in writing.
Common components like connectors, termination caps, and flex sections are usually available from our suppliers within one to three business days. That means most DuraFlex fireplace repairs in San Jose are done within a week of diagnosis, often sooner. If you need a full custom-length liner, add a couple of days for fabrication and shipping.
For pinholes or seam splits, repair almost never makes sense on a wood-burning application. You’ll spend money on a patch and be back in the same spot in two years. For gas applications with minor connector or termination issues, repair is usually the right call. We’ll show you the camera evidence and give you both prices so you can decide with real information, not a sales pitch.
If a repair we completed fails inside the guarantee period, we return and correct it at no charge. That’s the 365-Day Done Right Promise, and it’s in writing on every job. No escalation, no argument, no “well, that’s a different problem now.” Call (669) 266-5073 and we’ll get it scheduled.
Contact Ashby Chimney San Jose
If you own a DuraFlex fireplace or liner in San Jose and it needs repair, call (669) 266-5073. A live person answers, we’ll get you a real arrival window, and the price you get before we start is the price on the invoice when we leave. We back every DuraFlex repair with the 365-Day Done Right Promise, in writing, every time.
Written by Nathan Corliss, Owner, Ashby Chimney San Jose at Ashby Chimney San Jose, serving San Jose and nearby areas.