Chimney Cap Installation in Seattle
An uncapped chimney invites water, animals, debris, and draft problems — and damage compounds fast in Seattle's wet climate. We install single-flue, multi-flue, and custom-fit stainless steel chimney caps with spark arrestors built in. Most cap installations are completed in a single visit.
NCSG Member
National Chimney Sweep Guild
Cap Types We Install
- Single-flue stainless steel caps
- Multi-flue chimney covers
- Custom-fabricated caps for odd flues
- Spark arrestor caps (code-compliant)
- Copper caps for premium homes
- Replacement of failed or rusted caps
Some words from our happy customers
325+ five-star reviews across Google, Thumbtack, Yelp & Angi
“Genesis Home Services came out for a brief inspection before providing thorough advice and instructions. Professional, honest, and helpful — I wouldn't think twice about using this company again.”
Jake Hamilton
Google review
“Our built-in wood-burning stove with a 2-story Class A chimney was thoroughly cleaned by Genesis Home Services. He outlined his methodology, findings, and suggestions in detail. Outstanding service.”
Theo Mitchell
Google review
“David did an excellent job doing a clean up and tune up of our very old gas fireplace. He spent time explaining how to best operate and maintain the fireplace. Very knowledgeable and professional.”
Reza B.
Thumbtack review
Our Work
Chimney Cap Installation Examples
Single-flue, dual-flue, flat-roof, and triple-cap installations across Seattle and Puget Sound
Before & After
Cap Replacement Results
Professional Cap Installation
Caps That Fit, Last, and Hold
We match the cap to your flue size and chimney type — single-flue, multi-flue, and custom configurations. Stainless steel standard. Free estimate on every job.
Get a Free Estimate →Signs You Need a Chimney Cap
If any of these apply, scheduling a chimney cap installation is overdue
Water intrusion in the chimney
Wet masonry, water in the firebox, rust on the damper.
Animal noises in the chimney
Scratching or rustling means something got in.
Debris in the fireplace
Leaves, twigs and nesting material on the smoke shelf.
Downdraft or smoky fireplace
Wind pushing down the flue and smoke into the room.
Missing or visibly damaged cap
Daylight at the top of the flue, seen from inside the firebox.
Rusted or corroded existing cap
Galvanized rusts through fast in marine air. Stainless doesn't.
Decision
Cap Replacement vs. New Installation
Two scenarios bring most homeowners to us — and the process is similar but the starting point matters.
New Cap Installation
No Cap Currently Installed
Many older Seattle chimneys were built without caps — the practice wasn't universal until decades after the homes were constructed. We measure the flue, evaluate the crown condition, and install a properly sized stainless steel cap. If the crown needs attention before installation, we address that first.
What's included:
- •Roof access and flue measurement
- •Cap selection sized to your chimney
- •Secure mounting with proper hardware
- •Crown condition assessment
Cap Replacement
Existing Cap Has Failed
When the existing cap is rusted, blown off in a storm, bent, missing mesh, or otherwise damaged, replacement restores protection. We remove the failed cap, document any damage to the crown or flue while there's open access, and install a new properly sized cap.
What's included:
- •Removal of failed cap
- •Crown and flue inspection (open access)
- •New cap install sized to current flue
- •Disposal of old cap materials
Common pairing: Cap replacement is often combined with crown sealing, since both are at the top of the chimney and we're already on the roof. Schedule them together to reduce overall project time.
The Basics
What a Chimney Cap Does
A chimney cap is the metal hood that sits over the flue opening at the top of your chimney. It's small, inexpensive compared to the rest of the chimney, and does five jobs that prevent thousands of dollars in damage when it's working correctly.
Rain protection
Keeps rain out of the flue. The main job.
Animal prevention
Mesh stops birds, squirrels, raccoons and bats.
Debris blocking
Leaves and branches stay out.
Spark containment
Arrestor caps hold embers in. Required in some areas.
Draft performance
A properly fitted cap improves draft rather than choking it.
Crown protection
Shields the crown from direct rain.
Commercial Options
Chimney Cap Installation Options
Chimneys come in different configurations — and so do caps. We install the type that fits your chimney structure, your venting needs, and the materials that hold up in Seattle weather.
Single-flue caps
Most common. Fits over one flue opening.
Multi-flue caps
One cap over the whole crown, covering two or more flues.
Stainless steel caps
The modern standard. Handles rain and marine air.
Copper caps
Premium. Patinas over time and lasts.
Spark arrestor caps
Fine mesh to contain embers. Required in some jurisdictions.
Custom-fabricated caps
For odd flue dimensions or offset flues.
Why It Matters
Why Professional Chimney Cap Installation Matters
Chimney caps look simple but the installation has real consequences — especially on multi-story Seattle homes with sloped roofs and pre-1960 masonry. Done correctly, the cap lasts decades. Done wrong, it can blow off in the first windstorm or damage the crown.
Correct sizing
Too small lets water past the edges. Too large blows off.
Secure mounting
We pull off badly mounted caps every January.
Crown protection
The mounting process itself can damage a fragile crown if done wrong. We assess crown condition first and use mounting techniques that don't crack the existing concrete.
Code compliance
Some WA jurisdictions require spark arrestors with specific mesh.
Safe roof work
Seattle roofs are steep, wet and mossy.
Warranty preservation
Most stainless cap warranties require professional installation.
Seattle Weather Demands a Good Cap
Pacific Northwest conditions make chimney caps more important here than in most of the U.S. — and we see what happens when they're missing or failing.
Heavy annual rainfall
Rain goes straight down an uncapped flue.
Persistent moisture
Humidity stays high even when it isn't raining.
Wildlife & nesting
Ballard, Wallingford, Phinney Ridge, Madrona — plenty of wildlife.
Moss & debris on the roof
Moss and roof debris end up in the flue.
Marine air corrosion
Metal parts corrode faster near the Sound.
Winter storm wind
Sustained winter wind tests every mounting.
Chimney Cap Installation FAQ
Questions Seattle homeowners ask before scheduling cap installation
Related Chimney Services
Chimney Crown Repair
Often paired with cap installation
Chimney Leak Repair
Stop water from entering the chimney
Chimney Flashing Repair
Seal the chimney-roof joint
Chimney Masonry Repair
Tuckpointing & brick restoration
Chimney Sweep
Bundle cap install with annual sweep
Chimney Repair Hub
All chimney repair services
Install or Replace Your Chimney Cap
Stainless steel standard. Single-flue, multi-flue, or custom-fit. Most installations completed in a single visit. Free inspection across Seattle and the Puget Sound region.
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Last reviewed: May 2026