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 Northport Owner’s Guide
Famco crown repair in Northport typically runs $380 to $650 installed, depending on crown size and whether the underlying concrete needs patching or full rebuild. We stock Famco-compatible crowns and sealants on our trucks, and most Northport replacements are completed in a single visit. Homeowners usually discover the problem during their first fire of the season, when water that seeped through a cracked crown over the winter starts dripping into the firebox or staining the ceiling nearby.
Which Famco Models This Applies To
Famco crowns are found most often on their CC and CC-RS series chimney caps, along with the older CBO line that was common on Long Island installations from the late 1990s through about 2010. The crown itself is the concrete slab that sits at the top of your chimney structure, not the metal cap above it, though Famco’s cap designs often dictate the crown dimensions underneath.
To identify your exact match, look for the stamped model number on the cap’s skirt or the metal band that secures it to the flue. If the stamp is rusted over, measure the crown’s outer dimensions and the flue tile opening. Famco CC-series caps require a minimum 13-by-13 inch crown for proper overhang; the CBO line needs at least 17 inches to accommodate its bolt-down flange. Getting this wrong means water runs behind the cap instead of off it.
We carry OEM-grade Famco crowns cast to their original specs, plus aftermarket equivalents from Copperfield that match the thermal expansion rate of Long Island’s freeze-thaw cycles. For most Northport homes, the aftermarket option holds up just as well and costs less. Hearthstone Chimney Co. is an independent service provider, not affiliated with Famco.
Signs Your Famco Crown Repair Is Failing
- Hairline cracks spreading across the concrete surface. These start small after the first few freeze-thaw cycles in a Northport winter, then widen each season as water enters, freezes, and pries the concrete apart. By year five or six, what began as a surface line runs deep enough to let water into the chimney structure.
- Water pooling on top of the crown instead of running off. A properly sloped Famco crown sheds water to all four edges. When the surface erodes flat or dips in the center, water sits and finds its way down between the flue tile and the brick. In Northport’s coastal climate, that standing water accelerates deterioration by about 30 percent compared to inland locations.
- Chunks of concrete missing from the crown edges. This is past the point of sealant repair. The crown’s overhang is designed to protect the brick courses below; once it’s compromised, the brick faces begin spalling and the repair cost multiplies.
- White efflorescence staining the chimney brick below the crown. That powdery residue is minerals left behind as water moves through the masonry. It means water is getting in at the crown level and traveling down the flue chase, often rotting ceiling drywall before you notice it inside.
- The metal cap sits loose or crooked. Famco caps are secured to the crown with masonry screws or a compression band. When the concrete underneath crumbles, the cap loses its anchor and can shift in wind, leaving the flue exposed to rain and nesting animals.
Replacement Cost & What’s Included
| Scope of Work | Price Range in Northport |
|---|---|
| Crown sealant application (hairline cracks only, crown structurally sound) | $380 - $480 |
| Partial crown rebuild (up to 30% of surface area) | $520 - $650 |
| Full crown replacement with new concrete pour | $650 - $950 |
| Crown replacement + new Famco-compatible cap installation | $890 - $1,200 |
What drives the range: crown size (a two-flue chimney in a Northport colonial near the harbor runs larger than a single-flue ranch), accessibility (steep roof pitch or tight lot lines add labor time), and whether the flue tile needs resetting. Every estimate includes a Level-2 camera inspection with photos you can see, a plain-English verdict, and no-hassle upfront pricing. The number on the estimate is the number on the invoice. All crown work carries our 90-Day Done Right Promise, in writing, no arguing.
DIY or Call Us?
There’s a safe middle ground here. You can check the crown yourself with binoculars from the ground, or carefully from a ladder at the gutter line. Look for the cracks, pooling, and missing chunks described above. What you cannot safely do is work on the crown itself. The concrete is heavy, the drop is significant, and the repair requires forming, pouring, and curing in specific weather conditions. We’ve been called to Northport homes where a homeowner’s sealant job trapped water underneath and accelerated the damage.
If the crown is compromised, the repair belongs to someone with fall protection, masonry experience, and the judgment to know whether the flue tile underneath is still sound. That’s the call to make. Reach us at (631) 528-2501. A live person answers, 24 hours a day, 7 days a week.
FAQs
A properly poured concrete crown with the right slope and overhang lasts 15 to 20 years in Northport’s climate. The salt air and freeze-thaw cycles near the harbor tend to shorten that by a few years compared to more sheltered inland locations on Long Island. Call (631) 528-2501 for an exact quote on replacement - estimates are free.
Hairline cracks less than one-eighth inch wide and limited to the surface can be sealed with a flexible crown coat product. Once cracks widen, run to the edge, or allow water into the chimney structure, replacement is the only lasting fix. We document what we find with camera photos so you can see the difference for yourself.
Most Famco crown replacements in Northport are completed in four to six hours of on-site work, plus a 24-hour cure period before the cap can be reinstalled. Our technicians arrive with the forms, concrete mix, and curing materials on the truck. Most jobs are done in a single visit.
We stock Famco-compatible crowns, sealants, and forming materials on our service trucks. For unusual sizes or the older CBO series, we measure on-site and have the custom pour ready within 48 hours. Either way, you’re not waiting on a parts shipment to resolve a water intrusion problem.
Written by Russell Haines, Owner, Hearthstone Chimney Co. at Hearthstone Chimney Co., serving Northport and nearby areas.





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