7 Steps on How to Repair a Chimney Crown

July 1, 2024
Avatar for Shakil AhmedShakil Ahmed
7 Steps on How to Repair a Chimney Crown

Imagine a cool fall morning enjoying a fire with your family. Suddenly, you see water dripping from above, a sign your chimney crown might have a problem. Learning how to repair a chimney crown can help you prevent future issues and keep your home safe and cozy.

To keep your chimney in good shape, check for cracks and leaks in the crown. Use concrete patching material to fix them. Regular inspections and applying a waterproof sealer will help maintain it for a long time. 

This guide will show you when and how to repair your chimney crown, as well as tips on how to keep it in great condition.

Signs You Need to Repair Your Chimney Crown

Here are signs that your chimney crown might need fixing:

  • Cracks and Chips: Check if you see lines or parts missing on the top of your chimney.
  • Water Leaks: If water is coming into your fireplace when it rains, your crown could be broken.
  • Efflorescence: If you spot a white, powdery stuff on the bricks, it means water is getting through.
  • Damaged Mortar Joints: Look for places where the material between the bricks is falling apart or gone.
  • Rusty Fireplace Parts: Rust on the door or inside can show water is getting in from a broken crown.
  • Crumbling bricks: If your chimney crown looks like it’s shedding its bricks, it’s time for a fix.
  • Tilting or leaning: This means the crown isn’t strong enough to hold itself up.

Steps on How to Repair a Chimney Crown 

Steps on How to Repair a Chimney Crown 

Important Note:  For big repairs, it’s always best to call a professional chimney sweep. They have the skills and safety gear to get the job done right. 

But for small cracks, here’s a quick fix:

Materials Needed:

  • Safety gear (gloves and goggles) to stay safe.
  • A ladder that’s strong and on steady ground.
  • A wire brush to clean off dirt and debris.
  • A masonry chisel to remove any loose or broken parts.
  • Concrete patching material or special crown repair stuff.
  • A trowel to spread the repair material smoothly.
  • Waterproof sealer to keep water out after the repair.

Step 1: Safety First

  • Put on your gloves and goggles.
  • Use a sturdy ladder on stable ground.

Step 2: Inspect the Crown

  • Carefully climb the ladder to look at the chimney top.
  • Check for cracks, chips, or other damage.

Step 3: Clean the Area

  • Use the wire brush to clean dirt and loose stuff off the crown.
  • Make sure it’s dry before starting the repair.

Step 4: Remove Loose Material

  • Use the masonry chisel to gently take off any loose or damaged parts.
  • Be careful not to cause more damage.

Step 5: Apply the Repair Material

  • Follow the instructions to mix the concrete or repair material.
  • Use the trowel to fill cracks and smooth the surface evenly.
  • Cover the whole crown for a good finish.

Step 6: Let It Dry

  • Leave the repair to dry completely, which might take hours or a day.

Step 7: Apply a Waterproof Sealer

  • Once dry, put on a waterproof sealer all over the crown.
  • This stops water damage and helps it last longer.

Now that you know how to fix your chimney crown, here are some facts about chimneys you might not know:

Old Chimneys

Long ago, chimneys were made from wood and hay. After a big fire in London in 1666, people started using bricks and mortar instead.

Lots of Chimneys

According to the EPA, 13 million chimneys and fireplaces are used each year.

Chimney Fires

Chimney fires can get extremely hot, up to 2000 degrees Fahrenheit, so it’s important to be careful.

How Much Does It Cost to Repair a Chimney Crown?

A damaged chimney crown can cause expensive leaks. Fixing it costs between $100 and $3,500, usually around $850.

Want to know how often to clean your chimney? Check out our helpful blog to learn more.

Tips to Preserve the Health of Your Chimney Crown

Tips to Preserve the Health of Your Chimney Crown

Here are some tips to keep your chimney crown in tip-top shape:

Regular Inspections

Check your chimney crown once a year, especially before the rainy season.

Prompt Repairs

Fix small cracks and chips right away to stop them from getting worse.


Put a waterproof sealer on your chimney crown every few years to keep water out.

Clear Debris

Remove leaves, twigs, and other stuff from your chimney cap and crown to prevent damage.

Professional Help

If you’re not sure about your chimney crown’s condition, get a professional to check and fix it.

Extra Tips

  • Trim those trees: Cut back branches hanging over your chimney to avoid trapped moisture.
  • Shovel the snow: Clear snow off your chimney crown to prevent it from melting and causing cracks.

Wondering why your chimney is pulling away from your house? Read our blog to find out why.

Contact Air Duct Now for Top Chimney Repair & Cleaning

Get in touch with Air Duct Now for the best chimney repair and cleaning in Los Angeles. We check, fix, and clean chimneys to keep your home safe and warm.

Our expert team ensures your chimney is clean and working well. We offer affordable prices, fast service, and a satisfaction guarantee.

Call us today to schedule your inspection!

Get to know why your chimney is leaking and how to repair it.

Wrapping Up

Hopefully, you’ve got a pretty good idea of how to repair a chimney crown. By following these steps and tips, you can keep your chimney crown in good condition, which helps protect your chimney and home. Regular check-ups and repairs can save you money and make your chimney crown last longer.

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