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 Cap & Crown in Bethesda: What to Know First
We repair and replace Famco chimney caps and crowns throughout Bethesda, typically completing most jobs in a single visit once we’ve had a look. You’ll get a straight price before we start, and we’ll show you exactly what’s wrong before we touch a tool. If you own a Famco cap or crown and something’s off, call (240) 618-3233 and we’ll talk through what you’re seeing.
This page is for Bethesda homeowners who already have a Famco product on their chimney, or who inherited one with a house they bought. You’ll find what fails, what it costs to fix here, and how we approach the work differently than a crew that just swaps parts and hopes for the best.
How Famco Products Fail - and How We Fix Them
Famco makes a solid cap. But around Bethesda, we see the same failure patterns repeat year after year. Here’s what we find on the roof:
- Famco LD-series caps losing their screen bond. The galvanized mesh on older LD units separates from the hood where the spot welds sit. It starts as a small gap, then a squirrel works it loose by October. We see it most on Bethesda colonials with tall flues that take full afternoon sun on the west face. Fix: full cap replacement, usually with a stainless upgrade that holds up better than galvanized against our humidity swings.
- Crown spalling under Famco bolt-down caps. Famco caps are designed to bolt through the crown into the flue tile. When the crown was poured thin or mixed too wet, those bolt holes become stress points and the concrete starts flaking within a few seasons. In Montgomery County, freeze-thaw cycles make it worse. Fix: we pull the cap, patch the crown properly with a crown repair mortar, and re-set the cap on a new footprint so the load spreads differently.
- LD-series spark arrestor clogging faster than expected. Famco’s fine mesh does a good job stopping embers, but Bethesda’s tree canopy means leaf litter and maple samaras pack into the mesh faster than the manufacturer’s cleaning interval suggests. A clogged screen starves the fire of draft and pushes smoke back into the house. Fix: we clean and inspect first, and if the mesh is deformed from heat, replace the cap rather than trying to bend it back.
- Multi-flue Famco caps with internal condensation rust. On multi-flue applications around Kenwood, we’ve pulled Famco caps that look fine from the ground but have rust blooms forming on the interior seam where the two flue channels meet. The cause is moisture contact with a seam that wasn’t fully welded before galvanizing. Fix: replacement with a fresh unit, and we inspect the crown underneath for signs that condensation is running down into the flue.
- Famco Top series caps losing their lid rivets. The rivets on older Famco Top units work loose with expansion and contraction, which happens faster on chimneys that cycle hot-and-cold often. The lid stays on, but it rattles in wind and eventually lets water in at an angle. Fix: we replace the whole cap rather than re-riveting, because by the time rivets fail, the sheet metal around them is fatigued too.
Our Famco Chimney Cap & Crown Process
- 1
You call and we talk about what you’re seeing. A live person answers, day or night. Wendell Pike himself might pick up. We ask about the cap model if you know it, when you first noticed the problem, and whether water is getting in.
- 2
We schedule a visit and show up in the window we give you. Our crew arrives in uniform and brings the ladder gear needed for Bethesda roof pitches. No trip charge if you’re in the county.
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Diagnostics on the roof. We inspect the cap, the crown, the flue tile top, and the flashing around it. If the crown’s the problem, we’ll show you the cracking or spalling with photos. If the cap’s the problem, we’ll tell you exactly why and what it would take to patch versus replace.
- 4
Parts decision. If we’re replacing a Famco cap, we talk through OEM versus quality stainless aftermarket options. Some Famco caps have been discontinued, and in those cases we match the footprint and function rather than improvising. Our trucks carry common sizes, but custom or multi-flue caps may take a few days to bring in.
- 5
The repair. Cap replacements are straightforward once the old unit is off. Crown work takes longer – we grind or patch as needed, use a proper crown mortar that flexes with the weather, and check the slope so water sheds away from the flue. We never caulk over a structural crown crack and call it done.
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We test, photograph, and walk you through it. We light for draft, check the seal, and show you the finished work before we come down. Every Famco job is covered by our 90-Day Done Right Promise, in writing. If something’s not right, one call brings us back.
What Famco Chimney Cap & Crown Costs in Bethesda
Here’s what we charge for common Famco work in the Bethesda area:
| Job | Typical Range |
|---|---|
| Famco cap replacement (single flue, standard LD) | $320 - $480 installed |
| Famco Top series cap replacement | $380 - $540 installed |
| Multi-flue Famco cap (custom or discontinued) | $550 - $850 installed |
| Crown repair (small patch, no cap work) | $180 - $320 |
| Crown rebuild plus new cap | $700 - $1,100 |
| Crown coating (FlexSeal or similar, over sound concrete) | $250 - $400 |
The price moves depending on roof access, flue diameter, and whether the crown needs work under the cap. We give you the number before we start, and the number on the invoice matches the number on the phone. Estimates are free – call (240) 618-3233 for an exact quote on your Famco setup.
Why Bethesda Homeowners Call Top Hat Chimney for Famco Work
We’ve been at this since 1999, locally owned and owner-operated, and we’re the ones who show up at your door – not a nationwide firm that subcontracted your roof work to the lowest bidder. Wendell Pike puts his name and license number on the work, and you’ll run into him again at the hardware store on a Saturday. If you’ve got a Famco cap or crown problem, we know the product line well enough to tell you when a repair makes sense and when you’re better off replacing. And because we also work with DuraFlex, HeatShield, and Gelco products, we can match the right part to the right chimney instead of forcing one brand everywhere.
Every job gets the 90-Day Done Right Promise in writing. If it’s not right, one call brings Wendell and his crew back at no charge. That’s the whole point – a name you can verify and a face you’ll see again.
FAQs
If the mesh is packed with debris but the metal is sound, cleaning restores the draft. If you see rust through the mesh, missing rivets, loose lid, or gaps where the screen meets the hood, replace it. We’ll show you photos from the roof so you can see exactly what we’re seeing before you spend a dollar.
Small surface cracks in sound concrete can be filled with a flexible crown repair compound. But if the crown is spalling in chunks, noticeably sloped inward, or water has been getting behind it for more than a season, patching won’t hold. We’ll give you a plain-English verdict, and if it just needs a patch, we won’t sell you a rebuild. Call (240) 618-3233 and we’ll take a look.
Many current Famco caps are available through our suppliers, but older LD and some multi-flue models have been discontinued. When that happens, we match the footprint with a quality stainless alternative and tell you why we chose it. As an independent Famco service provider, we’re not tied to any one parts channel – we use what works best for your chimney.
Most single-flue cap replacements we do in Bethesda are completed in under two hours, including roof time and cleanup. If the crown needs work too, we may need to return once the mortar cures. We’ll tell you the timeline on the phone before we book anything.
Only if the cap was the source of the water. A new cap won’t fix a bad crown, a cracked flue tile, or flashing leaks. That’s why we inspect the whole top of the chimney before we quote – so you’re not paying for a cap and still getting water in November.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Bethesda and nearby areas.





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