Crown replacement
Thin mortar crowns are replaced built to last through many winters.
Masonry Repair
Chimney Crown Repair Country Club Hills, IL
A chimney sweep in Country Club Hills can seal hairline cracks in a chimney crown or rebuild a crown that is breaking apart, before water and frost turn small cracks into a rebuild. Dial (708) 816-0120 to talk with a local chimney sweep about the crown.
The chimney crown is the slab of concrete or mortar on top of the chimney, around the flue tile, and its job is to keep water out of the masonry below. It takes more weather than any other part of the chimney, so it is often the first thing to crack. Water that gets through a cracked crown soaks the top courses of brick and expands as it freezes.
It helps to separate the crown from the cap. The cap is a metal hood over the flue that keeps out rain and animals, and the crown is the concrete it is mounted on. A new cap will not stop water from soaking in through a cracked crown.
A lot of crown failures trace back to the original construction. A common shortcut is a thin layer of mortar troweled over the top, with no overhang to throw water clear and nothing to let the flue tile expand. That combination tends to crack within a few winters.
Chimney Crown Repair is often paired with chimney cap installation and chimney leak repair, depending on the cause.
Looking for Country Club Hills chimney crown repair? Call (708) 816-0120 and describe the problem to a chimney sweep who works in Country Club Hills.
Call nowThe process
The crown repair process
Crown repair runs from a simple seal coat to a full rebuild, depending on the damage.
Inspect the crown
The crown is tapped and checked to see whether it is solid with surface cracks or breaking up. The cap and the upper masonry are part of the same check.
Prep the crown
The crown is scrubbed of dirt, growth and loose pieces so repair material can grip. Good prep decides how long the repair lasts.
Seal minor cracks
For minor cracking, a brushable crown repair coating seals the cracks and stretches with the concrete as it moves. It is the least invasive fix when the crown is still intact.
Replace the crown
A failing crown is chipped off and replaced with a properly built concrete crown. A proper replacement slopes away from the flue and extends past the brick with a drip edge underneath.
Expansion joint
The gap around the flue tile is filled with a flexible sealant rather than locked tight in concrete. Without it, the hot flue tile will crack a new crown just like the old one.
Finish the top
A cap goes back on once the new crown is ready. Any spalled brick at the top can be repaired at the same time.
What is included
Types of crown repair
Upper brick repair
Damage to the top courses from a leaking crown is fixed in the same job so the new crown sits on sound masonry.
Expansion joints
A bond break is added so the flue tile can expand freely which keeps the new crown from cracking early.
Crack sealing
Small cracks in a sound crown are sealed before water and frost can widen them.
Drip edges
New crowns are built to overhang the brick with a groove underneath which keeps runoff from soaking the masonry.
Related service
Chimney Crown Replacement Country Club Hills, IL
When a crown has deep cracks, loose chunks or no overhang at all, replacing it is more reliable than sealing it. First the failed crown comes off, exposing the top of the brick and the flue tile. A form is built around the top of the chimney, a bond break goes around the flue tile, and the new crown is cast with a slope, an overhang and a drip edge.
Crown work in Country Club Hills depends on the season. Fresh concrete should not freeze while it cures, which makes mild weather the best time for the job. If a crown fails in winter, a temporary seal or tarp can limit water damage until it can be replaced. It is worth asking how the new crown will handle water runoff and flue tile expansion.
Local help
Chimney Crown Repair Near Me
In Country Club Hills, a crown that looked fine in the fall can be cracked by spring. Across Country Club Hills and nearby places including Hazel Crest, Flossmoor, Markham and Homewood, the crowns that crack first are the ones with no overhang and no room for the flue tile to move, so sealing cracks early or replacing a poorly built crown protects the rest of the chimney.
For chimney crown repair in Country Club Hills, IL or nearby towns like Hazel Crest, Flossmoor, Markham and Homewood, call (708) 816-0120 to reach a chimney sweep who covers your street.
Chimneys in this climate
This part of the country gets long winters, heavy snow in places and stretches of bitter cold. Heating systems and wood stoves work nearly nonstop for months, so flues collect creosote fast and liners and crowns see a lot of heat and cold. Snow drifting against the back of a chimney melts slowly and works water under tired flashing. Most chimney cleaning in Country Club Hills, IL happens right before the first snow.
Why call
Why not wait
Smaller repairs
Small chimney problems caught early usually stay small repairs.
Sweeps who know Country Club Hills
Local sweeps see the same chimney types and weather wear across Country Club Hills and nearby towns.
Clear next steps
Ask your questions before you agree to anything.
Common questions about chimney crown repair
Is a chimney crown the same as a chimney cap?
The crown is the concrete or mortar slab that covers the top of the masonry around the flue, and the cap is the metal cover that sits over the flue opening. Each does a different job, so a good chimney needs both. Adding a cap will not fix crown damage.
Can a cracked chimney crown be repaired?
How far the cracking goes decides it. Minor surface cracks are usually sealed with an elastomeric crown sealer. If the crown is cracked through, crumbling or missing pieces, replacement is the better option.
Is a cracked chimney crown a big deal?
A cracked crown is worth fixing quickly, even if the crack looks small. Once water reaches the masonry, it leads to spalled brick, failing mortar, rusted dampers and damaged flue tiles. Fixing it now is far easier than repairing the masonry damage later.
What causes chimney crowns to crack?
Crowns crack from water freezing in small cracks, from being built thin out of mortar, and from the flue tile expanding against them. Many crowns are troweled from mortar mix with no overhang and no gap around the flue tile, so they crack within a few years. Once a crack forms, water gets in, freezes and widens it every winter.
When does a chimney crown need replacing?
A well-built crown can last a very long time, while a thin mortar crown may crack within a few years. Crowns made from mortar mix, with no overhang or no gap around the flue tile, fail much sooner. Yearly inspections, as NFPA 211 recommends, are the best way to keep an eye on it.
More questions? Call (708) 816-0120
Often needed together
Chimney Cap Installation
Installing chimney caps with mesh sides sized to the flue tile or the whole crown.
Learn moreChimney Leak Repair
Tracing chimney leaks to the real entry point and sealing it, whether the drip shows up in the attic, the ceiling or the firebox.
Learn moreChimney Masonry Repair
Repairing spalled brick, crumbling mortar, cracks and loose courses on masonry chimneys, with materials matched to the original masonry.
Learn moreChimney Waterproofing
Protecting chimney masonry from rain with a penetrating repellent, to slow freeze-thaw damage and spalling.
Learn more
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Call (708) 816-0120 to talk to a chimney sweep serving Country Club Hills, IL.
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