Crown replacement
Thin mortar crowns are replaced that sheds water past the brick.
Masonry Repair
Chimney Crown Repair Steger, IL
A chimney sweep in Steger 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. One call to (708) 708-7359 reaches a nearby chimney crown pro.
A chimney crown covers the top of the brick and slopes away from the flue so water runs off instead of soaking in. Sitting fully exposed at the highest point of the house, it takes a beating from rain, snow and sun. 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. A cap is metal and covers the flue opening, while the crown is concrete and covers the rest of the chimney top. 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. Mortar is not meant for that job, and a flue tile that heats and expands will crack a crown that is cast tight against it.
If the problem goes deeper than it first looked, a Steger chimney sweep may also recommend chimney cap installation or chimney leak repair.
Looking for Steger chimney crown repair? Call (708) 708-7359 to reach a nearby chimney sweep.
Call nowThe process
The crown repair process
The right fix depends on whether the crown is basically sound with surface cracks or failing all the way through.
Assess the cracks
From the roof, the crown is examined for cracks, crumbling, poor slope and missing overhang. The flue tile, cap and upper brick are checked at the same time, since crown damage often spreads to them.
Clean the surface
Loose concrete, moss and debris are cleared and the surface is cleaned and dried. Skipping prep is the main reason crown patches peel off.
Seal minor cracks
Hairline cracks in an otherwise sound crown are filled and the whole crown is coated with a flexible, elastomeric crown sealer. This is a good option when the crown is solid and the cracks are caught early.
Rebuild if needed
If the crown is crumbling, thin or cracked through, it is removed and a new one is formed and cast. A proper replacement slopes away from the flue and extends past the brick with a drip edge underneath.
Expansion joint
A bond break is left between the crown and the flue tile so the tile can expand without cracking the crown. That one detail prevents the most common crown cracks.
Finish the top
A cap goes back on once the new crown is ready. It is a good moment to repoint the top courses if needed.
What is included
Crown work a chimney sweep handles
Top course repair
Damage to the top courses from a leaking crown is fixed in the same job before the crown goes on.
Expansion joints
A bond break is added so the flue tile can expand freely to prevent the most common type of crown crack.
Overhangs
The crown extends past the chimney face to protect the brick below.
Crown sealer
Small cracks in a sound crown are sealed to extend the life of the crown.
Related service
Chimney Crown Replacement Steger, IL
A crown that is breaking apart or was built from thin mortar usually needs to be replaced rather than coated. First the failed crown comes off, exposing the top of the brick and the flue tile. Forms are set to create the overhang, the flue tile is wrapped to allow movement, and concrete is placed and sloped away from the flue.
In Steger, the weather affects when a crown can be replaced. Fresh concrete should not freeze while it cures, which makes mild weather the best time for the job. A winter crown failure can often be sealed temporarily to buy time until warmer weather. It is worth asking how the new crown will handle water runoff and flue tile expansion.
Local help
Chimney Crown Repair Near Me
Chimney crowns in Steger take the full force of the weather year round. Across Steger and nearby places including South Chicago Heights, Crete, Sauk Village and Chicago Heights, the crowns that crack first are the ones with no overhang and no room for the flue tile to move, which is why catching crown cracks in their first season keeps the repair simple.
For chimney crown repair in Steger, IL or nearby towns like South Chicago Heights, Crete, Sauk Village and Chicago Heights, call (708) 708-7359 to reach a chimney sweep who covers your street.
What the local climate does to a chimney
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, which means fast creosote buildup and a lot of stress on liners, crowns and flashing. Snow that piles up behind a chimney and melts slowly is a common source of leaks at the flashing. That is why Steger chimney sweeps are busiest every September and October.
Why call
Why act early
Safer fires
A chimney problem fixed early rarely spreads to the masonry, the liner or the house.
Familiar with local homes
Local sweeps see the same chimney types and weather wear across Steger and nearby towns.
Clear next steps
Ask the sweep about the cause, the options and the estimate before work starts.
Chimney Crown Repair FAQ
Why did my chimney crown crack?
Crowns crack from water freezing in small cracks, from being built thin out of mortar, and from the flue tile expanding against them. A crown cast tight against the flue tile will crack when the tile heats and expands. Water and frost then finish the job.
Is a chimney crown the same as a chimney cap?
A crown is masonry and seals the top of the chimney, while a cap is a metal hood with a screen that covers the flue itself. The crown keeps water out of the brick, and the cap keeps rain, animals and debris out of the flue. A damaged crown needs its own repair.
Can a cracked chimney crown be repaired?
The answer turns on how badly the crown is damaged. Hairline cracks in a solid crown can be sealed with a flexible crown coating that bridges the cracks and keeps water out. A crown that is breaking apart or was built too thin usually needs to be replaced.
How serious is a cracked chimney crown?
Small crown cracks deserve attention because they let water straight into the chimney. The water it lets in damages the brick, the flue and the framing around the chimney. Fixing it now is far easier than repairing the masonry damage later.
When does a chimney crown need replacing?
How long a crown lasts depends mostly on how it was built. 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) 708-7359
Other services that may help
Chimney Cap Installation
Putting a sturdy cap on top of the chimney sized to the flue tile or the whole crown.
Learn moreChimney Leak Repair
Stopping chimney leaks at the source, before the water rots framing or ruins the flue.
Learn moreChimney Masonry Repair
Fixing the brick, stone and mortar that hold a chimney together, with materials matched to the original masonry.
Learn moreChimney Waterproofing
Treating chimney brick and mortar with a breathable water repellent, to slow freeze-thaw damage and spalling.
Learn more
Looking for something else?
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Call (708) 708-7359 to talk to a chimney sweep serving Steger, IL.
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