Crack sealing
Minor cracking is filled and coated with an elastomeric sealer that keeps water out and moves with the concrete.
Masonry Repair
Chimney Crown Repair Huntingtown, MD
A Huntingtown chimney technician can repair the crown, the concrete slab that seals the top of the chimney around the flue, so rain stops soaking into the brick from above. Call (443) 968-7369 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. Once it cracks, water runs straight into the brick and mortar below, and every freeze widens the crack.
A crown is not the same as a chimney cap, though the words are often mixed up. 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. One cannot stand in for the other.
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 Huntingtown chimney sweep may also recommend chimney cap installation or chimney leak repair.
Need chimney crown repair in Huntingtown? Call (443) 968-7369 to reach a nearby chimney sweep.
Call nowThe process
How chimney crown repair works
Crown repair runs from a simple seal coat to a full rebuild, depending on the damage.
Check the top
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.
Clean the surface
Loose concrete, moss and debris are cleared and the surface is cleaned and dried. Good prep decides how long the repair lasts.
Apply crown sealer
For minor cracking, a brushable crown repair coating seals the cracks and stretches with the concrete as it moves. This is a good option when the crown is solid and the cracks are caught early.
Replace the crown
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.
Leave room to move
The crown is separated from the flue tile by an expansion joint sealed with flexible material. That one detail prevents the most common crown cracks.
Protect the work
A chimney cap is installed or reset over the flue once the crown has cured. Any spalled brick at the top can be repaired at the same time.
What is included
What crown repair covers
Upper brick repair
The brick under the crown is repointed or replaced where needed before the crown goes on.
Overhangs
An overhang with a drip edge is formed into the crown so water drips clear instead of running down the brick.
Crown replacement
Crumbling or badly cracked crowns are removed and recast with a slope, overhang and drip edge.
Bond breaks
The flue tile is separated from the crown so heat does not crack the crown.
Related service
Chimney Crown Replacement Huntingtown, MD
A crown that is breaking apart or was built from thin mortar usually needs to be replaced rather than coated. The old crown is broken out down to the brick, and the top courses are checked and repaired if needed. 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.
Crown work in Huntingtown depends on the season. Concrete needs to cure without freezing, so most crown replacements are done from spring into fall. In the meantime, a temporary cover can keep the worst of the water out. Ask the chimney sweep whether the new crown will have an overhang, a drip edge and an expansion joint at the flue, since those three details decide how long it lasts.
Local help
Chimney Crown Repair Near Me
Around Huntingtown, crown cracks usually show up after a winter of freezing and thawing. From Huntingtown out to neighboring communities such as Prince Frederick, Chesapeake Beach, Owings and Golden Beach, many original crowns are thin, flush with the brick and locked tight against the flue tile, which is a recipe for cracking, and a properly built crown is one of the best investments in a chimney.
Need chimney crown repair around Huntingtown? Call (443) 968-7369 for a Huntingtown chimney sweep who serves the towns around it too.
How the weather here affects chimneys around Huntingtown
The heating season here is shorter than up north, yet most winters bring plenty of cold nights by the fire. The ground and the masonry freeze and thaw many times each winter instead of staying frozen, and soaking rains in spring and fall test every crown and flashing joint. Warm, humid summers bring animals and damp odors to chimneys that sit unused. Most chimney cleaning in Huntingtown is booked in the fall, before the first cold snap.
Why call
Why act early
Less damage
A chimney problem fixed early rarely spreads to the masonry, the liner or the house.
Local knowledge
Local sweeps see the same chimney types and weather wear across Huntingtown and nearby towns.
Clear next steps
Ask the sweep about the cause, the options and the estimate before work starts.
Chimney Crown Repair FAQ
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. Caught early, a crown seal is simple, but left alone, the damage can spread down the chimney.
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. Thin mortar crowns with no room for flue tile movement tend to crack early. Water and frost then finish the job.
Do I need a new crown if mine is cracked?
That depends on how deep and widespread the cracks are. Hairline cracks in a solid crown can be sealed with a flexible crown coating that bridges the cracks and keeps water out. If the crown is cracked through, crumbling or missing pieces, replacement is the better option.
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. The crown keeps water out of the brick, and the cap keeps rain, animals and debris out of the flue. A cap cannot make up for a cracked crown.
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. The weak ones are thin, flush with the brick and cast tight to the flue. Yearly inspections, as NFPA 211 recommends, are the best way to keep an eye on it.
More questions? Call (443) 968-7369
Related services
Chimney Cap Installation
Putting a sturdy cap on top of the chimney to keep out rain, animals, leaves and stray sparks.
Learn moreChimney Leak Repair
Finding and stopping water that gets in through the crown, cap, flashing or brick, before the water rots framing or ruins the flue.
Learn moreChimney Masonry Repair
Fixing the brick, stone and mortar that hold a chimney together, before freeze-thaw damage spreads.
Learn moreChimney Waterproofing
Treating chimney brick and mortar with a breathable water repellent, applied after repairs so the brick sheds water but can still dry out.
Learn more
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