Level 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.
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AfterFamco Chimney Liner & Rebuild in Gaithersburg: What to Know First
We provide independent Famco chimney liner and rebuild service in Gaithersburg, with most jobs completed in a single visit and upfront pricing agreed before we start. A typical Famco liner replacement runs $2,800-$4,500 depending on flue height and access, while partial rebuilds start around $1,800. We’re not here to sell you what you don’t need - we’ll show you camera footage and give you a plain verdict you can act on or postpone.
This page is for Famco product owners in Gaithersburg who’ve been told they need liner work, aren’t sure if the diagnosis is right, or want the job done by technicians who know the difference between a Famco FL Series flexible liner and a rigid SS installation. If that sounds like your situation, call us at (301) 719-5236. A live person answers, 24 hours a day.
How Famco Products Fail - and How We Fix Them
- FL Series flexible liners with longitudinal seam separation. The 316Ti stainless flex we see in Gaithersburg’s 1980s-1990s split-levels often develops seam splits where the corrugation stress concentrates, especially after years of shoulder-season burning that never gets the flue hot enough to fully dry condensation. We sleeve with a new DuraFlex or Gelco flexible liner sized to the appliance, or switch to rigid where the chase geometry allows.
- Famco rigid 304 stainless liners with crevice corrosion at joints. In the humid summers along the I-270 corridor, condensation pools in poorly supported joint overlaps. The 304 alloy doesn’t hold up like 316Ti once the passive oxide layer breaks down. We replace with properly supported 316Ti or upgrade to a HeatShield cerfractory resurfacing when the existing clay flue is structurally sound.
- Top-sealing Famco dampers that seize in the frame. The cast-aluminum frames on older TC Series units distort after years of thermal cycling, and the blade jams half-open. That open flue is an open invitation for every squirrel in Montgomery County. We rebuild the firebox throat and install a new damper assembly, or convert to a lock-top with integrated damper if the original framing is too far gone.
- Famco chimney caps with screen mesh deterioration. The factory spot-welds on standard mesh caps fail predictably after 8-12 years in Gaithersburg’s freeze-thaw cycle. Once the mesh drops, debris and nesting material enter the flue and accelerate liner damage. We fabricate a replacement cap with fully welded seams or source an OEM Famco cap when the homeowner prefers brand consistency.
- Transition failures where Famco liners meet factory-built chimney sections. The slip-joint adapters on older Famco installations weren’t always sealed with high-temp silicone rated for the temperature swing of a wood-burning insert. The gap pulls combustion air, cools the flue gases, and dumps creosote at the joint. We pull the adapter, inspect the surrounding masonry, and reinstall with proper clearance and a sealed transition rated for the appliance.
Our Famco Chimney Liner & Rebuild Process
- 1
Call and schedule. A live person answers, asks what you’re burning, what you’re seeing, and whether you’ve had prior work. We book a Level-2 inspection with camera.
- 2
Camera inspection and documentation. Our technician runs a camera the full flue length, photographs every joint, every offset, and any damage. You see the footage. We explain what we’re looking at in plain English.
- 3
Parts decision. If Famco OEM is available and makes sense for your system, we’ll quote it. If lead times are long or an aftermarket part from DuraFlex, HeatShield, or Gelco matches the spec, we’ll lay out both options with the price difference.
- 4
The repair. Background-checked, uniformed technicians complete most Famco liner replacements and rebuilds in one visit. We protect your floors, contain dust, and clean up after.
- 5
Post-repair test and documentation. We run a smoke test or draft test depending on the appliance, verify clearances to combustibles, and photograph the finished work.
- 6
Written guarantee. The 90-Day Done Right Promise goes in your hand before we leave. If it’s not right, we come back. No paperwork to find, no arguing.
What Famco Chimney Liner & Rebuild Costs in Gaithersburg
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Famco flexible liner replacement (single flue) | $2,800 - $4,200 | Flue height, number of offsets, chase access |
| Famco rigid liner replacement | $3,500 - $5,500 | Chase diameter, need for new block-off plate |
| Partial chimney rebuild (firebox to throat) | $1,800 - $3,200 | Brick matching, lintel condition, smoke chamber shape |
| Full chimney rebuild above roofline | $4,500 - $8,000 | Scaffold needs, cap/crown replacement, flashing |
| Liner repair (spot HeatShield or joint repair) | $800 - $1,600 | Linear feet of damage, access to damaged section |
These are Gaithersburg market ranges for professional-grade materials and installation. The number on your estimate is the number on your invoice. Call (301) 719-5236 for an exact quote - estimates are free.
Why Gaithersburg Homeowners Call Hearthstone Chimney Co. for Famco Work
We’ve worked chimneys across Gaithersburg for over 42 years, including a stretch of older colonials near the Kentlands where the fireboxes tell you a lot about how a house was built and whether anybody ever looked after it. Russell Haines has spent well over two decades in the trade and is known for spotting liner damage that other sweeps walk right past.
We back every Famco job with the 90-Day Done Right Promise - in writing, no arguing. Our technicians carry Famco-compatible parts alongside DuraFlex, HeatShield, and Gelco, so we’re not waiting on a warehouse while your fireplace sits cold. And a live person answers the phone every hour of every day. Done right, and we stand behind it.
FAQs
Famco’s original equipment warranty applies to manufacturing defects, not installation errors or damage from improper use, chimney fires, or long-term condensation corrosion. As an independent Famco service provider, we document the failure mode with photos so you have evidence if a defect claim applies. Call (301) 719-5236 and we’ll review your situation.
Most Famco liner replacements are completed in a single day, with the technician arriving between 8 and 9 a.m. and finishing by late afternoon. Full rebuilds above the roofline may require a second day for mortar cure before the cap goes on. We’ll tell you exactly which scenario applies before you book.
If the damage is localized - a single joint gap, minor surface corrosion, or a small crack in a clay flue being lined - HeatShield cerfractory resurfacing or a spot repair may suffice. If the liner has multiple failure points, seam separation, or thinning below 24 gauge equivalent, replacement is the sound choice. We show you the camera footage and give a plain verdict either way.
Famco OEM parts match the original spec exactly, which matters for warranty continuity and exact fit. For many liner applications, aftermarket brands like DuraFlex and Gelco meet or exceed the same ASTM and UL standards at comparable or lower cost. We stock both and quote both when the choice is open.
The National Fire Protection Association recommends annual Level-1 inspection for all chimneys, and Level-2 with camera before any liner replacement or after a chimney fire or significant weather event. In Gaithersburg’s climate, with humid summers and freeze-thaw winters, we see more liner deterioration in systems that skip years. Call (301) 719-5236 to schedule - estimates are free.
If it’s worth heating your home with, it’s worth doing the maintenance correctly. Call Hearthstone Chimney Co. at (301) 719-5236 for a free estimate on your Famco chimney liner or rebuild in Gaithersburg. A live person answers, 24 hours a day, and we’ll give you a square deal: no surprises on the bill.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Gaithersburg and nearby areas.