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 Brentwood Owner’s Guide
We stock Famco-compatible crown repair materials on the truck and install them throughout Brentwood for $340 to $640, parts and labor included. Most crown repairs are completed in a single visit that takes two to three hours. The way most Brentwood homeowners discover the crown has failed is water in the firebox after a hard rain, or a rust streak running down the brick below the crown line.
A crown is the concrete slab that caps the top of the chimney. It’s the first thing the weather hits and the last thing most people think about until it starts coming apart. Famco builds their crown forms and replacement crowns to specific dimensional tolerances, and when a Famco product is already up there, you want the repair matched to it rather than someone slapping a different profile over the old one and hoping the water runs the right way.
If you’re in Brentwood and suspect your crown is shot, call (934) 935-3847. We’ll get up on the roof, take a look, and tell you straight whether it needs attention now or can wait a season.
Which Famco Models This Applies To
Famco supplies crown forms and prefabricated replacement crowns in standard flue tile sizes: 8×8, 8×12, 12×12, and 13×13, plus rectangular runs for double-flue chimneys. The most common Famco crown repair we handle in Brentwood is on single-flue brick chimneys using the 8×8 or 8×12 profile. If the original crown was poured with a Famco form, the overhang is usually a distinctive one and a half to two inches beyond the brick face, which sheds water farther from the masonry than a hand-troweled job. That overhang measurement is one of the quickest ways to know you’re dealing with a Famco form rather than a field-built crown.
For identification, look underneath the crown lip. Famco forms leave a smooth, rounded drip edge with no tool marks. A field-poured crown usually shows trowel lines and a rougher underside. If there’s a data plate or stamp anywhere on a prefabricated Famco crown cap, it will be on the underside facing the flue tile, not on the exposed top surface.
On the OEM versus aftermarket question: for crowns, the material matters more than the brand name. We use Famco-compatible forms and a concrete mix rated for freeze-thaw cycling. A generic form from a hardware store will pour a crown that looks right for about two years before Long Island weather starts cracking it. The Famco profile has a deeper drip edge and a thicker outer lip, which is what keeps water off the brick face instead of channeling it straight down the sides.
One compatibility gotcha worth knowing: Famco forms seat onto the flue tile with a tight internal lip, not a friction fit against the brick. If the flue tile is chipped or out of square, the form won’t seat squarely and water finds the gap. We check tile condition before pouring. Most Brentwood chimneys from the 1960s and 1970s have exactly this issue, and it’s why a crown that was “just replaced” sometimes fails inside three years.
Signs Your Famco Crown Repair Is Failing
- Rust streaks down the brick below the crown line. Water is pooling on the crown and running over the edge carrying dissolved minerals and rust from the flue cap or damper hardware. The crown’s overhang has probably eroded or cracked enough that it’s no longer kicking water away from the masonry.
- Water in the firebox after rain, especially with a northwest wind. On Long Island, storms track in from the northwest and hit that side of the chimney hardest. If the firebox is wet only after certain storms, the crown crack is directional and usually on the upper edge facing the prevailing weather.
- Spalling brick or popping mortar joints in the top three or four courses. This is the classic sign the crown has been failing for longer than you’d guess. Water moves down into the brick, freezes, and the face of the brick shears off. By the time you see this, the crown has usually been compromised for two or more winters.
- Visible cracking or a missing chunk from the crown slab itself. Take binoculars and look up. Hairline cracks are reparable if caught early; a missing section an inch or deeper means water is getting under the remaining crown and the failure will accelerate. A crown that has separated from the flue tile is done, no matter how good the rest of it looks.
- Efflorescence (white chalky residue) on the inside flue walls near the top. This is mineral salt left behind when water evaporates out of the masonry. It means water is entering at the crown-to-flue junction and drying toward the inside. The flue tile absorbs it, and the upper tile slowly erodes from the inside.
Replacement Cost & What’s Included
Famco crown repair or replacement in Brentwood runs $340 to $640 installed, depending on what we find when we get up there. The low end covers a crown that’s mostly intact with cracking at the flue junction: we chase the cracks, apply a bonding agent and elastomeric sealant, and reset the Famco form lip where it’s separated. The high end is a full tear-out and re-pour with a new Famco form, new concrete, and typically a new flue cap if the old one’s rusted through.
What changes the price: single flue versus double flue, how much of the old crown has to be chipped out, whether the top courses of brick need re-pointing because the failed crown already damaged them, and roof access. A steep roof over a two-story colonial costs more to work on than a ranch with a walkable pitch. That’s reflected in the labor quote before we start, not added as a surprise after.
Every crown repair from us includes removal and disposal of the failed material, fresh concrete poured to the Famco profile, and a written guarantee under our 90-Day Done Right Promise. If it’s not right, Wendell comes back and makes it right at no cost. You’ll get the number on the phone before we start and that number on the invoice when we finish.
Call (934) 935-3847 for an exact price on your chimney. Estimates are free, and there’s no trip charge inside the county.
DIY or Call Us?
Here’s the honest split. If you’re comfortable on a ladder and your roof has a walkable pitch, you can inspect your own crown with binoculars or by getting up there with a camera. What you’re looking for: cracks wider than a dime, separation around the flue tile, and any missing concrete at the edges. Taking photos helps. If you see daylight through a crack, it’s past the patch-and-seal stage.
What we don’t recommend is climbing onto a steep Brentwood roof with a bucket of crown coat and a trowel. The materials sold at hardware stores for DIY crown repair are meant for hairline cracks on a sound crown, not a crown that’s structurally failed. If the crown has separated from the flue or is missing sections, a coat of gooey sealant will look fixed for a season and then the water comes back, usually worse because the sealant traps moisture under the surface. And a fall from a roof doing work you weren’t sure about is not worth the few hundred dollars it saves.
The middle ground: call us at (934) 935-3847, tell us what you’re seeing, and we’ll tell you whether it’s something to address this month or something that can wait for the next sweep. If it needs doing, we’ll do it right. If it doesn’t, we’ll tell you that too.
FAQs
A properly poured Famco crown on a structurally sound chimney lasts 20 to 30 years on Long Island, provided the concrete was mixed for freeze-thaw and the drip edge overhangs the brick correctly. The ones that fail early fail because the original was field-poured without a proper form, or because the flue tile shifted and cracked the crown from the inside. We see Brentwood chimneys where a crown from the 1980s is still doing its job, and others where a six-year-old pour is already crumbling because nobody addressed the underlying tile.
Yes, if the cracking is limited to hairline fissures and the crown is still bonded to the flue tile and the brick. We chase the cracks, fill them with a polyurethane sealant rated for masonry, and coat the surface. What can’t be sealed is a crown that has separated from the flue, lost a section, or developed a crack that runs all the way through the slab. Those need a re-pour. Call (934) 935-3847 and describe what you’re seeing; we’ll give you a straight read on which situation you’ve got.
We’re usually off the roof and cleaned up in two to three hours. The old crown is chipped out, the new Famco form is set, concrete is poured and finished, and the site is left clean. The concrete needs time to cure before exposure to heavy rain, but it’s structurally set within 24 hours. We’ll schedule around the weather so a fresh pour isn’t getting soaked the same afternoon.
Yes. We carry Famco crown forms in 8×8, 8×12, and 12×12, plus the masonry materials to pour and finish them. If your chimney is a double-flue or needs a 13×13 form, we’ll have it on hand for the appointment. We also work with DuraFlex, HeatShield, and Gelco products for related liner and repair work, so one call covers most of what an aging chimney in Brentwood needs.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Brentwood and nearby areas.





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