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 Crown Repair: The Ashburn Owner’s Guide
We stock and install Famco chimney crown repair components in Ashburn, with most crown repairs running $450-$900 installed, depending on the crown’s size and how much of the existing mortar bed needs to come out. We carry Famco crown forms and crown coat materials on our trucks, so a typical single-flue repair is done in one visit. Most Ashburn homeowners find out their crown is failing because water is staining the ceiling near the fireplace, or they see pieces of the crown itself scattered on the roof after a storm.
The crown is the concrete or mortar cap that sits on top of the chimney, sealing the gap around the flue liner. When it cracks, water gets behind it and starts working on the brick and mortar below, and that’s when Frost-Freeze cycles in Loudoun County turn hairline cracks into broken-off chunks. A crown repair is less expensive than the rebuild that follows if it’s ignored.
Which Famco Models This Applies To
Famco crowns aren’t a single universal part. The crown forms and crown coat we install are sized to the flue’s outside diameter and the chase or masonry opening, which is why we measure on-site. If you have a prefabricated fireplace with a metal chase top, you’re more likely dealing with a chase cover than a masonry crown, and that’s a different part. For a masonry chimney in Ashburn built with standard modular brick, the crown is usually poured in place using a Famco form that matches the flue tile, typically 8-inch, 10-inch, or 13-inch outside diameter.
OEM versus aftermarket matters less for crown repair than it does for moving parts, but there is one compatibility gotcha worth knowing: Famco crown forms are galvanized steel, and the crown coat we pour over them is a Portland-based compound that flexes enough to survive NoVA’s freeze cycles. If you buy a generic frame and pair it with the wrong crown coat, you’ll get a repair that looks fine in July and loses its bond by February. We stock Famco forms and coat material on the truck because we’ve seen that mismatch fail more than once in Ashburn, and the warranty claim doesn’t help when it’s your ceiling being stained in March.
Signs Your Famco Crown Repair Is Failing

- Visible cracks in the crown, especially radiating from the flue. A straight crack through the middle usually means the crown wasn’t poured with a break between it and the flue liner, so the liner’s expansion is splitting it. That’s a repair-or-replace signal, not a wait-and-see.
- Water staining on the ceiling or wall near the fireplace. In Ashburn, this shows up most often in spring after repeated freeze-thaw cycles have opened a crack wide enough to let water through. The crown is the usual entry point, which is why our camera inspection always includes an above-roofline crown view.
- Chunks of mortar or concrete in the gutter or on the roof. Spalling, or the surface flaking off in pieces, is what happens when water soaks into a crown and then freezes. Once spalling starts, the crown sheds material faster with every cycle.
- Efflorescence on the exterior brick below the crown. That white, chalky deposit is mineral salt carried out of the masonry by migrating water. It’s a moisture map, and when it’s concentrated just below the crown, the crown is usually the source.
- Damp smell from the fireplace in summer. Water that leaks through a cracked crown pools in the smoke chamber and gets musty without an active fire to dry it out. The smell fades in winter when you’re burning, which is why Ashburn owners often miss it until August.
Before
AfterReplacement Cost & What’s Included
A full Famco crown repair in Ashburn typically runs $450-$900 installed. The range depends on three things: how much of the old crown needs to be chipped out, whether the flue needs a new crown form or the existing form is still sound, and whether we need to build the crown up to establish proper slope. A simple recoat with crown coat material lands at the low end; a full tear-out and new form usually lands in the $650-$900 range.
Every quote is written before work starts, with parts and labor separated, and it includes a documented photo record of the crown as-found and the finished repair, per Clause 4 of the Haven Standard. The repair itself is backed by our 365-Day Done Right Promise: if it’s not done right, we make it right. We don’t mark up the Famco materials, either; buying through Haven’s network is what keeps the parts line honest.
DIY or Call Us?

A crown repair is not a high-tension or electrical job, but it is a roof-access job on a sloped surface, and that’s where an Ashburn homeowner can get hurt. If you want to inspect it yourself, stay on the ground and use binoculars to look for visible cracks or spalling from the yard. What you can’t safely do without a ladder, fall protection, and experience is assess the crown’s bond to the flue or tell whether a crack is superficial or through-cut. We’ve followed enough homeowner patch jobs in Ashburn to know that store-bought crown coat applied without proper surface prep fails in one season.
The camera doesn’t guess. Neither do we. If you’ve got a Famco crown that’s suspect, call (240) 220-9412 and we’ll put eyes on it before anyone touches a trowel.
FAQs
A properly poured crown with a Famco form and quality crown coat should last 15-20 years in Ashburn’s climate, assuming the flue liner isn’t causing differential expansion stress. What kills crowns early in this area isn’t age, it’s freeze-thaw cycling combined with crowns that were poured flush against the flue without a bond break, so we build that break into every repair. Call (240) 220-9412 for an exact quote, estimates are free.
Small hairline cracks can be routed and filled with crown coat material without a full tear-out, but any crack wide enough to pass a credit card edge usually means the crown has already lost structural bond and water is migrating. The honest answer comes from the camera, and you’ll see the photos we make that call from. Call (240) 220-9412 for a crown assessment and written quote, estimates are free.
Most Ashburn crown repairs are done in four to six hours on-site, including tear-out, new form installation, pour, and cure-surface finishing. The crown needs a day of dry weather to set before it’s exposed to rain, which is one reason we watch Loudoun forecasts when scheduling. Call (240) 220-9412 for an exact timeline, estimates are free.
Yes, our Ashburn trucks carry Famco crown forms in the standard flue outside diameters plus crown coat material, and we also stock repair components from DuraFlex, HeatShield, and Gelco for liner-side work we find during the same visit. Corrine Halstead made on-truck parts inventory a rule after one too many Ashburn jobs that needed a second trip for a form the office had to order. Call (240) 220-9412 to confirm your crown’s size, and we’ll have what’s needed when we arrive.
Written by Corrine Halstead, Owner, Level Two Chimney Ashburn at Level Two Chimney Ashburn, serving Ashburn and nearby areas.





Before
After
Before
After