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A standard chimney cap replacement costs $250 in the Portland area, and $675 for a custom cap. At Five Star Chimney Repair, chimney cap replacement cost is one of the first things homeowners ask about once they notice rust, missing mesh, or water stains near the top of their chimney, and the actual price depends mostly on size, material, and how many flues your chimney has.
Here is a real, published breakdown of chimney cap pricing in Portland, what changes the cost, and how to tell when replacement is actually necessary.
Key Takeaways
- A standard chimney cap replacement runs $250 in the Portland area, while custom caps run $675.
- A missing or damaged cap is one of the most common causes of chimney downdraft and smoke rolling back into the home.
- Chimney caps play a direct role in chimney waterproofing, keeping rain and moisture out of the flue and masonry below.
- Getting the sizing right matters. A cap that does not properly fit the flue opening will not seal correctly against rain, wind, or animals.
- A quick professional measurement is the most reliable way to know your exact chimney cap replacement cost before work begins.
Chimney Cap Replacement Cost in Portland
Chimney cap replacement cost varies based on the cap itself, not just labor. Here is our current, published pricing for the two most common options we install across Portland, Beaverton, Hillsboro, Tigard, Lake Oswego, West Linn, Gladstone, Clackamas, and Gresham.
- Standard chimney cap: $250
- Custom chimney cap: $675
For a full, current list of everything we price out, our rates page breaks down each service in detail.
For context, national pricing data from HomeGuide puts total chimney cap replacement, including both the unit and installation labor, between $200 and $850, with prefabricated caps landing on the lower end and custom caps on the higher end. Our Portland pricing tracks closely with that range on both tiers.
If you have been searching for chimney cap replacement near me, this is the most accurate, up-to-date pricing you will find for the Portland area, straight from the source.
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What Actually Affects Chimney Cap Replacement Cost
Chimney cap installation is not one flat number across every home. A few specific factors typically move the price.
- Cap material. A galvanized or standard steel cap costs less than a stainless steel chimney cap, which resists rust and corrosion far longer in Portland’s wet climate.
- Number of flues. A single-flue chimney takes a standard cap, while a chimney with more than one flue often needs a multi-flue chimney cap sized to cover the entire top of the structure at once.
- Custom fabrication. Some chimneys need a cap that is custom-made rather than a standard fit, which is where the $675 tier typically applies. Our technicians can tell you which category your chimney falls into during an estimate.
- Spark arrestor mesh. Many caps double as a spark arrestor, screening out embers along with rain and debris. Denser mesh designed for this purpose can add slightly to the cost of the unit.
- Additional repairs found during install. If a technician finds damaged chimney flashing or a cracked crown while installing the new cap, addressing that is a separate cost from the cap itself, though catching it during the same visit saves a second trip.
Signs Your Chimney Cap Needs Replacing
A chimney cap does two jobs at once: keeping water out and keeping wind, birds, and small animals from getting into the flue. When it fails at either one, the signs are usually easy to spot.
- Rust or visible holes in the cap itself. Once a cap starts rusting through, it stops sealing properly, even if it still looks intact from the ground.
- Smoke blowing back into the house. A missing or damaged cap is a common cause of chimney downdraft, since there is nothing to block wind from pushing air back down the flue.
- Water stains inside the firebox or on the ceiling near the chimney. This usually means water is getting past the cap and into the flue itself.
- Animal noises or nesting material in the chimney. A cap with torn mesh or a missing screen is an open invitation for birds and small animals.
If any of this sounds familiar, the fix is rarely just the cap. Water that gets past a failed cap can work its way into the masonry, and what starts as a cap replacement can turn into a full chimney leak repair if it sits too long.
Read More: Why Do Portland Chimneys Face Unique Moisture Issues?
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Serving Homeowners Across the Portland Metro
We install and replace chimney caps throughout the greater Portland metro, including Beaverton, Hillsboro, Tigard, Lake Oswego, West Linn, Gladstone, Clackamas, and Gresham. Pacific Northwest winters bring a steady mix of wind and heavy rain, which puts more strain on chimney caps here than in drier climates, especially older caps that have already started to rust.
If your cap looks worn, or if you cannot remember the last time it was replaced, it is worth having it checked before the rainy season picks up.
Read More: Why Is My Fireplace Smoking?
Why Homeowners Choose Five Star Chimney Repair
Five Star Chimney Repair has been serving the Portland area for 15 years, and every estimate is handled directly by the owner. Our technicians are CSIA certified, meaning they are trained to the safety standards set by the Chimney Safety Institute of America, not just general contracting experience.
Additionally, we back our chimney cap installation work with a price match guarantee, so the number we quote is the number you can plan around. Our technicians also check the surrounding crown and flashing during every cap replacement, since those components work together to keep water out of your chimney system.
Frequently Asked Questions
- How Do You Replace a Chimney Cap?
- Replacing a chimney cap involves removing the old cap, measuring the flue opening precisely, and securing a properly sized replacement so it seals tightly against the crown. It sounds simple, but a cap that is even slightly the wrong size will not seal correctly against wind and rain. Because the work happens on the roof and requires an exact fit, most homeowners have this done by a professional rather than attempting it themselves.
- How Much Is a Chimney Cap?
- In the Portland area, a standard chimney cap replacement costs $250, while a custom cap runs $675. The right choice depends on your chimney’s size, material, and number of flues. Our rates page has our full, current pricing.
- How Do You Measure for a Chimney Cap?
- Chimney caps are measured by the outside dimensions of the flue tile or liner, not the inside opening, since the cap needs to sit securely over the top edge. Getting chimney cap sizing wrong by even a small amount can mean a cap that is loose in high wind or one that does not fit at all. This is one of the main reasons professional installation is worth it, since a technician can measure and confirm fit on-site rather than guessing from the ground.
Conclusion: A Small Cap Fix Beats a Big Water Problem
A damaged or missing chimney cap is one of the easiest problems to fix early, and one of the most expensive to ignore. Between our published rates and a quick professional measurement, you can replace it before wind, rain, or a curious raccoon turns a $250 fix into a much bigger repair. Five Star Chimney Repair has spent 15 years helping Portland-area homeowners protect their chimneys from the inside out.