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 Leesburg Owner’s Guide
Famco crown repair in Leesburg typically runs $340-$780 installed, depending on whether we’re sealing a hairline crack or rebuilding the full concrete crown on a multi-flue chimney. We stock Famco-compatible crown sealants, form kits, and pour mixes on our trucks, and most Leesburg appointments are completed in a single visit. The crown sits at the very top of your chimney, sloped to shed water; when it fails, water goes straight into the masonry below.
Most Leesburg homeowners catch this during a routine sweep or when they notice water stains on the ceiling near the fireplace after a hard rain. In neighborhoods like the older homes around Morven Park, where chimneys have seen forty-plus winters, crown deterioration is one of the most common calls we get each September before burning season starts.
Which Famco Models This Applies To
Famco manufactures chimney caps, dampers, and venting accessories, not the concrete crown itself. When we say “Famco crown repair,” we’re addressing the crown of a chimney that also uses Famco components - typically a Famco chimney cap or top-sealing damper mounted above or integrated with the crown. The crown is the poured concrete slab that seals the top course of brick and sheds water away from the flue.
To identify what you’re working with, look for the Famco label on your cap or damper assembly. Common series we see in Leesburg include the Famco standard galvanized caps (model prefixes SC or GCC) and the Lyemance or Lock-Top top-sealing dampers, which seat directly into the flue tile or mount to the crown surface. If your cap is bolted through the crown, the bolt pattern matters - Famco caps typically use 1/4-inch lag bolts on 6- to 8-inch centers, but we’ve found older installations where a previous contractor used incompatible fasteners that cracked the crown during tightening.
We use professional-grade crown repair materials from Famco, Copperfield, and Olympia Chimney - never generic hardware-store sealant that shrinks and cracks within two seasons. Hearthstone Chimney Co. is an independent service provider, not affiliated with Famco.
Signs Your Famco Crown Repair Is Failing
- Hairline cracks spreading across the crown surface. These start as thin as a dime but widen each freeze-thaw cycle. Leesburg’s temperature swings from 20°F nights to 50°F days in late winter force water trapped in micro-cracks to expand and contract, accelerating the damage.
- Chunks of concrete missing from the crown edge. Called spalling, this happens when the original pour was too thin at the overhang or when salt-laden runoff from the roof sits on the crown surface. Once the edge breaks away, water flows behind the brick face and into the attic.
- Water pooling on the crown instead of running off. A properly sloped crown sheds water to all four sides. If you see standing water after rain, the crown has settled or was poured flat - common on chimneys built during the 1980s construction boom around Leesburg.
- Rust stains bleeding down the chimney brick below the cap. This means water is getting past the crown and reaching the steel flue liner or interior reinforcement. Famco caps with deteriorated mesh or missing storm collars compound the problem by directing roof runoff onto the crown center.
- Damp or musty odor from the firebox in summer. Even small crown leaks let humid air into the flue system. In Leesburg’s humid July and August, that moisture breeds odor and can deteriorate a stainless liner from the outside in.
Replacement Cost & What’s Included
| Repair Type | Typical Range in Leesburg | What’s Included |
|---|---|---|
| Crown sealing (hairline cracks) | $340-$480 | Wire brush prep, polymer-modified sealant application, flash photography before and after |
| Partial crown rebuild (spalled edges) | $520-$680 | Form and pour new concrete to original slope, integrate with existing sound center, 90-Day Done Right Promise |
| Full crown replacement | $680-$780 | Remove failed crown, pour new 4-inch minimum slab with proper overhang and drip edge, reseat Famco cap or damper |
What drives the range: accessibility (steep roof pitch, height), whether the flue tile needs resetting after crown removal, and if the Famco cap hardware has corroded into the concrete and needs extraction. We give you the full number before we start - no surprises on the bill. Every repair includes our Level-2 camera inspection of the flue interior, photos you can see, and a plain-English verdict on whether anything else needs attention now or can wait.
DIY or Call Us?
There’s a safe middle ground here. A homeowner can check the crown from the ground with binoculars for obvious cracks, and you can verify that your Famco cap is still securely bolted and its mesh is intact. What you cannot do safely is work on the crown itself. The surface is sloped, often slick with soot and moss, and a four-story fall from a Leesburg colonial roof is not a risk worth taking for a $400 repair.
DIY sealant jobs fail because the surface prep is inadequate - the sealant bonds to dust, not concrete, and peels within a season. We’ve peeled off enough homeowner-applied Flex Seal to know. Crown pouring requires forms, proper slump, and slope calculation that accounts for your specific flue layout. Call (571) 701-7519 and we’ll get it done right the first time.
FAQs
A properly sealed crown lasts 8-12 years; a full rebuild with professional-grade concrete mix lasts 20-25 years. Leesburg’s freeze-thaw cycles and occasional ice storms are harder on crowns than steady cold climates because the repeated expansion and contraction opens cracks faster. Call (571) 701-7519 for an exact quote - estimates are free.
Yes, if the structural concrete is sound and cracks are less than 1/8 inch wide. We clean, prime, and seal with a flexible polymer-modified compound that bridges small movement. If the crown is thinner than 2 inches at any point, or if reinforcement mesh is exposed and rusting, replacement is the only lasting fix. We show you the camera photos and explain which category you’re in before any work begins.
Most crown sealing jobs take 90 minutes; a full rebuild requires 3-4 hours on site plus cure time before the Famco cap can be reseated. We schedule so you’re not waiting around - our technicians arrive in a marked truck, in uniform, and complete most jobs in a single visit.
We stock crown sealants, bonding agents, form materials, and pour mixes compatible with Famco cap and damper installations on every truck. Specific Famco hardware like replacement bolts, storm collars, or mesh panels we order same-day from our distributor if your existing component is damaged beyond reuse. We do not charge a second trip fee if a part needs to be fetched.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Leesburg and nearby areas.





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