A chimney cap may look like a small detail, but it plays a big role in protecting your chimney system. When a concrete chimney cap cracks, shifts, or breaks down, moisture can enter the chimney, leading to structural damage, liner issues, and expensive repairs. Homeowners often ask one key question first: What is the concrete chimney cap replacement cost?
In this guide, the Expert Chimney Team breaks down real-world pricing, factors that affect cost, material comparisons, and when replacement is necessary—so you can make a confident, informed decision.
What Is a Concrete Chimney Cap?
A concrete chimney cap (often confused with a chimney crown) is a solid slab that seals the top of a masonry chimney. Its job is to:
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Shed water away from the flue
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Protect brick and mortar from moisture
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Prevent freeze-thaw damage
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Support chimney cap installation above the flue opening
Over time, concrete caps can crack due to weather exposure, poor construction, or age. Once cracks form, water penetration accelerates damage throughout the chimney.
Average Concrete Chimney Cap Replacement Cost
The concrete chimney cap replacement cost typically ranges between:
$700 to $2,500, depending on size, design, and chimney condition.
Here’s a quick breakdown:
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Small chimneys: $700 – $1,200
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Standard residential chimneys: $1,200 – $1,800
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Large or custom chimneys: $1,800 – $2,500+
This price usually includes removal of the damaged cap, materials, labor, and proper sealing.
Cost to Replace Chimney Cap vs Repair
Homeowners often ask whether repair is cheaper than replacement.
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Minor surface cracks: $150 – $400 (short-term fix)
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Structural cracking or flaking: Replacement recommended
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Water damage below the cap: Replacement required
If the cap is already allowing moisture in, repair often becomes a temporary solution. In many cases, replacing the cap costs less than dealing with long-term chimney crown replacement cost issues later.
Factors That Affect Concrete Chimney Cap Replacement Cost
1. Chimney Size and Shape
Larger chimneys require more concrete, reinforcement, and labor. Multi-flue chimneys cost more than single-flue systems.
2. Height and Roof Access
Steep roofs, tall chimneys, or limited access increase labor time and safety requirements, raising overall cost.
3. Condition of Existing Masonry
If the brickwork beneath the cap is damaged, additional masonry repair may be required before installation.
4. Reinforcement and Waterproofing
High-quality caps include steel reinforcement and waterproof coatings, which add durability but increase upfront cost.
Chimney Cap Installation Cost vs Replacement
If your chimney never had a proper concrete cap, chimney cap installation cost may be similar to replacement pricing:
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New concrete cap installation: $900 – $2,300
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Prefabricated metal cap installation: $150 – $600
Concrete caps cost more upfront but last significantly longer than metal alternatives.
Concrete vs Stainless Steel Chimney Cap Cost
Many homeowners compare concrete to metal options.
Stainless Steel Chimney Cap Cost
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$250 – $800 installed
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Lightweight and corrosion-resistant
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Requires proper crown underneath
Concrete Chimney Cap Replacement Cost
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$700 – $2,500
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Structural protection + water management
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Long lifespan when installed correctly
Concrete caps provide structural protection, while metal caps mainly block debris and animals. Many chimneys benefit from both.
Chimney Crown Replacement Cost vs Cap Replacement
A chimney crown is the sloped surface around the flue, while the cap sits above it.
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Chimney crown replacement cost: $800 – $3,000
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Concrete chimney cap replacement cost: $700 – $2,500
If both are damaged, replacing them together often reduces total labor costs.
Chase Cover Replacement Cost (For Factory-Built Chimneys)
Not all chimneys have concrete caps. Factory-built systems often use chase covers.
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Chase cover replacement cost: $600 – $2,000
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Stainless steel chase covers cost more but last longer
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Water pooling is a common failure point
A professional inspection can confirm whether your chimney uses a concrete cap or chase cover.
How Much to Replace Chimney Cap by Type
| Chimney Type | Average Cost |
|---|---|
| Masonry chimney (concrete cap) | $700 – $2,500 |
| Metal chimney with chase cover | $600 – $2,000 |
| Multi-flue chimney | $1,500 – $3,000 |
| Custom or oversized chimney | $2,000+ |
Signs You Need Concrete Chimney Cap Replacement
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Visible cracks or chunks missing
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White staining (efflorescence) on bricks
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Interior water leaks near fireplace
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Rusted flue liners or caps
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Loose or shifting concrete
Ignoring these signs often leads to higher chimney crown replacement cost and liner damage.
How Long Does a Concrete Chimney Cap Last?
A properly installed concrete chimney cap can last 20–30 years, especially when sealed and reinforced. Poor installation or lack of waterproofing can reduce lifespan dramatically.
Is Replacing a Chimney Cap Worth the Cost?
Yes. Replacing a damaged cap protects:
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Fireplace structure
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Interior walls and ceilings
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Overall home value
Compared to moisture damage repairs, the cost to replace chimney cap is relatively low.
Professional Installation vs DIY
Concrete chimney caps are not DIY-friendly. Improper slope, curing, or sealing can cause premature failure. Professional installation ensures correct drainage, reinforcement, and long-term durability.
FAQs
1. How much does a concrete chimney cap replacement cost?
Concrete chimney cap replacement typically costs between $700 and $2,500, depending on chimney size, height, and condition.
2. Is chimney crown replacement cost higher than replacing a cap?
Yes. Chimney crown replacement cost usually ranges from $800 to $3,000, especially if masonry repairs are needed.
3. How much to replace the chimney cap on a multi-flue chimney?
Multi-flue chimneys often cost $1,500 to $3,000 due to added materials and labor.
4. What is the cost to replace the chimney chase cover instead of a cap?
Chase cover replacement cost ranges from $600 to $2,000, depending on the material and chimney size.
5. Can a stainless steel chimney cap replace a concrete cap?
No. Stainless steel chimney caps sit on top of a crown or concrete cap and serve a different purpose. Many chimneys use both together.
Final Thoughts
The concrete chimney cap replacement cost depends on chimney size, condition, and access—but replacing it early can save thousands in future repairs. Whether you’re dealing with cracking concrete, water leaks, or planning preventive maintenance, a professional evaluation is the best first step.
A solid chimney cap isn’t just a finishing touch—it’s a critical layer of protection for your entire chimney system.
The Expert Chimney Team provides research-based guidance and practical tips on fireplaces, chimneys, and home safety. With 6 years of editorial experience, we help homeowners maintain safe, efficient, and well-functioning homes with clear, easy-to-understand advice. Read More
