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Chimney Crown Repair
Chimney Crown Repair & Replacement in New Jersey
Chimney Crown Repair
Repair or Replace?
AM Chimney Sweep repairs, resurfaces and rebuilds chimney crowns for homeowners throughout New Jersey.
The chimney crown is the slab across the top of a masonry chimney, around the flue. Its job is to shed rain and snowmelt away from the chimney — when it cracks, water gets into the masonry below, and freeze-thaw cycles make the damage worse each winter.
Technicians With 15+ Years of Experience | $1M General Liability Coverage | Serving New Jersey
Why Crowns Crack
- Freeze-thaw cycles widen small cracks winter after winter
- Many older crowns were built as a thin mortar layer rather than a properly formed crown, and crack sooner
- A crown with no overhang lets water run straight down the chimney's sides
- Age and weather wear even a well-built crown over time
What the Crown Does: A well-built crown covers the top of the chimney so water can't soak straight into the brick, slopes away from the flue, and extends past the sides of the chimney so water drips clear of the brick face.
Tip for Homeowners:
If a roofer or home inspector flagged your chimney crown, mention it when you book. We inspect the crown, flue, and cap together before starting any repair.
Chimney Crown Repair
What Happens During a Crown Job
- Inspect the chimney top to confirm the crown is the problem
- Check the flue, cap, and upper masonry
- Repair, resurface, or rebuild the crown as needed
- Let the repair cure
- Address the cap at the same time if it's missing or damaged
Tip:
Crown work is backed by our 5-year workmanship warranty. See completed chimney projects in Our Work. Local guides: Clifton and Bridgewater, or see all North Jersey towns.
Signs of Crown Damage
- Visible cracks on the top of the chimney (often spotted by roofers or home inspectors)
- Pieces of concrete or mortar on the roof or in the gutters
- Water in the firebox, a rusted damper, or water stains near the chimney
- White staining (efflorescence) on the upper courses of brick
Safety Note: If a crown cracks, water gets into the masonry below, and freeze-thaw cycles make the damage worse each winter, so it's worth having it checked before problems spread.
FAQ
Frequently Asked Questions
Chimney Crown Repair
Freeze-thaw cycles widen small cracks winter after winter, and many older crowns were built as a thin mortar layer rather than a properly formed crown, so they crack sooner.
Look for cracks on top of the chimney, pieces of concrete or mortar on the roof or in the gutters, water in the firebox or stains near the chimney, or white staining on the upper courses of brick.
We inspect the crown first, then repair, resurface, or rebuild it as needed, depending on how much damage there is.
Yes — crown work is backed by our 5-year workmanship warranty.
A cracked crown lets water soak into the masonry below it, and freeze-thaw cycles make the damage worse each winter, so it's worth having it checked before problems spread.
Related Services
Dryer Vent Cleaning
Air Duct Cleaning
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At AM Chimney Sweep, we are a locally owned and operated home services company providing statewide coverage across New Jersey. Headquartered at 516 Pleasant Valley Way, West Orange, NJ 07052 (Phone: (862) 225-6529), we specialize in professional Air Duct Cleaning, Chimney Sweeping & Inspections, and Dryer Vent Maintenance.