Chimney Crown & Masonry Repair: Protecting Your Chimney from the Top Down

Your chimney is exposed to the elements year-round, and one of the most common causes of damage is water intrusion from the top down.

The top portion of your chimney takes the most abuse. Since it extends above the roofline, it is fully exposed to rain, snow, wind, and freeze-thaw cycles with no real protection, making it the most vulnerable area for deterioration.

From cracked concrete crowns to deteriorating brick and mortar, chimney damage can start small and quickly turn into costly repairs if not addressed early.

At Fireplace & Chimney Authority Inc, we specialize in chimney crown repair, masonry restoration, tuckpointing, and preventative waterproofing to protect and extend the life of your chimney.

What Is a Chimney Crown (And Why It Matters)?

The chimney crown is the concrete top that seals the chimney and directs water away from the flue and masonry below.

When the crown is in good condition, it acts as your chimney’s first line of defense against water. However, over time crowns can:

• Crack from weather exposure
• Deteriorate due to freeze-thaw cycles
• Allow water to seep into the chimney structure

Even small cracks can lead to bigger issues if left untreated.

Crown Sealant: The First Line of Defense for Small Cracks

For minor cracking, a full rebuild isn’t always necessary.

We can apply a professional-grade crown sealant that:

• Seals small cracks and prevents water intrusion
• Flexes with temperature changes
• Extends the life of your existing crown
• Acts as preventative maintenance

This is one of the most cost-effective ways to stop damage before it spreads.

When a Chimney Crown Needs to Be Rebuilt

If the crown is severely damaged, cracked through, or deteriorating, a full rebuild may be required.

Signs include:

• Large or deep cracks
• Pieces breaking off
• Improper slope causing water pooling
• Exposed or failing concrete

A properly rebuilt crown is designed to:

• Shed water away from the chimney
• Provide long-term durability
• Protect the masonry below

Masonry Rebuild & Tuckpointing

Not all chimney damage requires the same repair—some issues can be fixed with tuckpointing, while others require a full masonry rebuild.

Tuckpointing is used when the brick is still in good shape, but the mortar joints are deteriorating. This process restores the joints, strengthens the structure, and helps prevent water intrusion.

Masonry rebuilding is needed when the damage extends beyond the mortar and the bricks themselves are cracked, spalling, or failing. In these cases, sections of the chimney are rebuilt to restore safety and structural integrity.

We also understand that appearance matters just as much as structure. That’s why we have access to thousands of different brick options to find the exact match—or as close as possible—to your existing chimney, ensuring a seamless repair that blends in with your home.

Chimney Saver: Waterproofing That Still Lets Your Chimney Breathe

One of the best ways to protect your chimney after repairs is with a professional-grade waterproofing treatment.

We apply Chimney Saver, a specialized sealant that:

• Repels water from penetrating the brick
• Reduces future deterioration
• Helps prevent freeze-thaw damage
• Allows the masonry to breathe (very important)

Unlike standard sealers, this product is designed specifically for chimney systems and won’t trap moisture inside.

Preventative Maintenance Saves Thousands

Most chimney damage starts small and worsens over time.

By combining:

• Crown sealant for small cracks
• Tuckpointing for mortar repair
• Chimney Saver waterproofing

You can significantly extend the life of your chimney and avoid major rebuild costs down the road.

Protect Your Chimney with Professional Repair & Maintenance

Whether your chimney needs minor sealing or full restoration, addressing issues early is the key to long-term performance and safety.

At Fireplace & Chimney Authority Inc, we provide:

• Chimney crown repair
• FREE masonry estimates
• Tuckpointing & masonry restoration
• Waterproofing
• Full chimney rebuilds

Call 630-279-8500 Fireplace & Chimney Authority Inc, proudly serving the Chicagoland area. We help homeowners protect their chimneys from the top down with expert care, over 30 years of trusted service, and lasting solutions—or visit one of our Chicagoland showrooms.