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.
Famco Chimney Repair in Gaithersburg: What to Know First
We provide independent Famco chimney repair in Gaithersburg, with most jobs completed in a single visit and upfront pricing that matches the final invoice. Typical turnaround from call to completion is three to five business days during peak season, faster for active leaks or structural safety concerns. Our 90-Day Done Right Promise covers every repair in writing, with no arguing and no extra paperwork if something needs adjustment.
This page is for homeowners in Gaithersburg who have a Famco chimney component showing wear, have been told they need major work by another sweep, or simply want a second opinion from a crew that knows the difference between a Famco OEM cap and what the hardware store sells. If it’s worth heating your home with, it’s worth doing the maintenance correctly. Call (301) 719-5236 anytime - a live person answers, 24 hours a day.
How Famco Products Fail - and How We Fix Them
- Famco chimney caps in the CEC series - the stamped-steel lid versions - tend to rust through at the seams after seven to ten years in Gaithersburg’s freeze-thaw cycles. The salt runoff from winter road treatment on I-270 accelerates it. We replace with a Famco-compatible galvanized or stainless cap, or step up to a Gelco equivalent if the flue size demands it.
- Famco wall thimbles (common on the WT and WTL lines) separate from the surrounding masonry when the original installer used standard mortar instead of high-temp refractory. You will see a halo of rust staining on the siding and sometimes smell smoke in the wall cavity. We pull the thimble, reseat with proper refractory cement, and seal the exterior penetration.
- Famco chimney crowns in the pre-fab CPF series crack diagonally from corner to center when the underlying flue liner settles. The crack looks minor from the ground but channels water straight to the firebox. We remove the crown, shim and stabilize the liner if needed, then pour a new concrete crown or apply HeatShield crown seal depending on the span.
- Famco B-vent collars and storm collars on older Gaithersburg colonials lose their sealant bead after fifteen to twenty years. The gap is often hidden by siding or trim until the surrounding sheathing softens. We reseal with a high-temp silicone rated for B-vent, or replace the collar if the metal has thinned.
- Famco fireplace face grilles and louvers in the Louvered series warp from overheating when the firebox has been burning oversized loads for years. The gaps let room air draft upward even when the unit is off. We measure for a precise replacement or fabricate a match from Copperfield stock if the series has been discontinued.
Our Famco Chimney Repair Process
- 1
Call and schedule. A live person answers, notes your Famco model if you know it, and books a Level-2 camera inspection. We do not diagnose over the phone.
- 2
Inspection with documentation. Our tech runs a camera up the flue, photographs the failure point, and gives you a plain-English verdict on the spot. You see what we see.
- 3
Parts decision. We source Famco OEM when the series is current and the price is fair. For discontinued lines, we use quality aftermarket from DuraFlex, HeatShield, or Gelco - never builder-grade substitutes. We explain the trade-off before you decide.
- 4
The repair. Background-checked, uniformed techs complete most Famco jobs in one visit. We protect floors, work cleanly, and do not leave until the component is tested.
- 5
Final test and photos. We run a draft test, verify clearances, and give you after photos to keep with your report.
- 6
Guarantee in writing. The 90-Day Done Right Promise goes on your invoice. If it’s not right, we come back. No arguing, no extra paperwork.
What Famco Chimney Repair Costs in Gaithersburg
| Repair | Typical Range | What Moves the Price |
|---|---|---|
| Famco chimney cap replacement | $280 - $520 | Stainless vs. galvanized; flue diameter; roof pitch |
| Wall thimble reseat and seal | $340 - $680 | Siding type; extent of refractory damage; accessibility |
| Crown crack repair or rebuild | $480 - $1,200 | Full pour vs. HeatShield seal; liner stabilization needed |
| B-vent collar replacement | $220 - $440 | Single vs. double-wall; height on roof |
| Fireplace grille/louver replacement | $180 - $360 | OEM availability; custom fabrication |
These are Gaithersburg-specific ranges based on local material costs and the Montgomery County permit environment. The exact number comes after we see your chimney. Estimates are free, and the price we quote is the price on the bill. Call (301) 719-5236 for an exact quote.
Why Gaithersburg Homeowners Call Hearthstone Chimney Co. for Famco Work
We are not a price-cutting chain, and we are not a one-truck operator who may answer the phone next year. For over 42 years we have worked chimneys across Gaithersburg, including a stretch of older colonials near the Kentlands neighborhood 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.
Our 90-Day Done Right Promise is in writing, not a handshake. Our techs are background-checked, uniformed, and trained on Famco specifics as well as compatible systems from DuraFlex, HeatShield, and Gelco. When a Famco part is discontinued, we have options. When another sweep says you need a full rebuild, we show you the photo and tell you if it can wait.
A square deal: no surprises on the bill. We’ll be there when we say. Photos you can see, a plain-English verdict.
FAQs
No - provided the repair is done with Famco-compatible parts and proper clearances. As an independent Famco service provider, we use OEM or equivalent-grade components and document our work. If your unit is still under manufacturer warranty, we note the repair in a format that satisfies their claims process. Call (301) 719-5236 and we will check your serial number.
Most are completed in a single visit of two to four hours. Crown rebuilds or jobs requiring liner stabilization may need a second day for cure time. We tell you before we start, not after.
Yes, for most lines produced after 1995. For discontinued series, we fabricate from Copperfield stock or cross-reference to Gelco and Olympia Chimney equivalents that meet the same UL listings. We never leave you with a gap.
Full replacement is rare for a Famco chimney component. In our experience, what looks like catastrophic failure is often a localized issue - a separated thimble, a cracked crown, a rusted cap - that we can fix for a fraction of replacement cost. Our camera inspection shows you exactly what is wrong and whether it can wait. Call (301) 719-5236 for a free estimate.
Water intrusion accelerates. A rusted cap becomes a rotted roof deck. A cracked crown becomes spalling brick and a compromised liner. In Gaithersburg’s climate, freeze-thaw opens small gaps into large ones between November and March. Carbon monoxide risk rises if the flue is breached. The repair does not get cheaper by waiting. Call (301) 719-5236 - estimates are free.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Gaithersburg and nearby areas.





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