Top course repair
The brick under the crown is repointed or replaced where needed so the new crown sits on sound masonry.
Masonry Repair
Chimney Crown Repair Natrona Heights, PA
A chimney sweep in Natrona Heights can seal hairline cracks in a chimney crown or rebuild a crown that is breaking apart, with a design that sheds water past the masonry. Call (724) 604-6450 to reach a local chimney sweep.
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. A cracked crown funnels water into the chimney, where freezing and thawing break the masonry apart from the top down.
People often confuse the crown with the cap, but they are different parts. 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.
Crowns often fail sooner than they should for a few common reasons. 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 shrinks and cracks under weather, and an expanding flue tile will split a crown that has no room for movement.
Chimney Crown Repair is often paired with chimney cap installation and chimney leak repair, depending on the cause.
Need chimney crown repair in Natrona Heights? Call (724) 604-6450 and describe the problem to a chimney sweep who works in Natrona Heights.
Call nowThe process
How chimney crown repair works
Here is how a chimney technician typically handles a crown repair.
Assess the cracks
The technician checks the crown for crack size and depth, overhang, slope and the joint around the flue tile. The flue tile, cap and upper brick are checked at the same time, since crown damage often spreads to them.
Remove loose material
The crown is scrubbed of dirt, growth and loose pieces so repair material can grip. Repairs only hold on a clean, sound, dry surface.
Coat the crown
Hairline cracks in an otherwise sound crown are filled and the whole crown is coated with a flexible, elastomeric crown sealer. It is the least invasive fix when the crown is still intact.
Rebuild if needed
Crowns that are breaking apart are replaced rather than patched. A proper replacement slopes away from the flue and extends past the brick with a drip edge underneath.
Flue tile joint
A bond break is left between the crown and the flue tile so the tile can expand without cracking the crown. Without it, the hot flue tile will crack a new crown just like the old one.
Cap the flue
A chimney cap is installed or reset over the flue once the crown has cured. Damaged upper brick and joints are often handled in the same visit.
What is included
What crown repair covers
Crack sealing
Minor cracking is filled and coated with an elastomeric sealer before water and frost can widen them.
Drip edges
The crown extends past the chimney face to protect the brick below.
Crown rebuilding
Thin mortar crowns are replaced with a slope, overhang and drip edge.
Bond breaks
A bond break is added so the flue tile can expand freely so heat does not crack the crown.
Related service
Chimney Crown Replacement Natrona Heights, PA
Chimney crown replacement is the right call when the crown is cracked all the way through, crumbling, missing pieces or was built too thin to last. Replacement starts with removing the old crown and inspecting the masonry underneath. 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.
In Natrona Heights, 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
Around Natrona Heights, crown cracks usually show up after a winter of freezing and thawing. Homes in Natrona Heights and nearby towns like Brackenridge, Tarentum, Lower Burrell and Arnold include plenty of older chimneys whose crowns were troweled from mortar rather than built as proper concrete crowns, which is why catching crown cracks in their first season keeps the repair simple.
For chimney crown repair in Natrona Heights, PA or nearby towns like Brackenridge, Tarentum, Lower Burrell and Arnold, call (724) 604-6450 to reach a chimney sweep who covers your street.
Chimneys in this climate
Cold winters keep fireplaces, wood stoves and oil burners working for half the year or more. The hardest thing on brick here is not the cold itself but the constant swing above and below freezing: water soaks into brick, mortar joints and the crown on a mild day, freezes overnight and expands, which is how cracks, loose bricks and leaks start. Wind driven rain from coastal storms finds any gap in flashing, too. Most homeowners in Natrona Heights, PA schedule a sweep in early fall, and a repair check after a hard winter.
Why call
Why fix it now
Smaller repairs
Small chimney problems caught early usually stay small repairs.
Sweeps who know Natrona Heights
Chimney sweeps in Natrona Heights know the chimneys and fireplaces common in local homes.
Clear next steps
Ask the sweep about the cause, the options and the estimate before work starts.
Chimney Crown Repair questions
What is the difference between a chimney crown and 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. They protect different parts of the chimney. A damaged crown needs its own repair.
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. Each freeze after that makes the crack wider.
Can a cracked chimney crown be repaired?
The answer turns on how badly the crown is damaged. Minor surface cracks are usually sealed with an elastomeric crown sealer. Deep cracks and loose chunks call for a new crown.
Is a cracked chimney crown a big deal?
A cracked crown is worth fixing quickly, even if the crack looks small. 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. Having the crown checked each year lets you seal cracks before replacement is needed.
More questions? Call (724) 604-6450
Other services that may help
Chimney Cap Installation
Fitting a metal cap over the top of the flue to keep out rain, animals, leaves and stray sparks.
Learn moreChimney Leak Repair
Tracing chimney leaks to the real entry point and sealing it, before the water rots framing or ruins the flue.
Learn moreChimney Masonry Repair
Fixing the brick, stone and mortar that hold a chimney together, so the chimney stays solid and dry.
Learn moreChimney Waterproofing
Waterproofing masonry chimneys with vapor-permeable repellents, not paint, as the last step in keeping a chimney dry.
Learn more
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