Chimney Cap Installation & Energy-Saving Dampers in Seattle & Kirkland

A chimney is a direct, open vertical shaft leading straight into your home. Without the proper cap protection at the top and a tight seal at the interior damper, your fireplace becomes a massive vulnerability. It allows heavy Pacific Northwest rain inside, gives debris and wild animals an easy nesting spot, and lets your expensive indoor heat escape right out the roof.

At Emerald City Chimney, we specialize in installing premium, heavy-duty chimney caps and high-efficiency top-mount dampers. For over 30 years, we’ve helped homeowners across the Greater Seattle area protect their masonry investments, secure their homes against pests, and drastically improve their energy efficiency.

The Ultimate Shield: Professional Chimney Cap Installation

A high-quality chimney cap is the single most cost-effective piece of protection you can buy for your chimney. If your chimney is currently uncovered, or if your old cap has rusted away, your home is vulnerable to three major threats:

• Water Damage: In the Seattle area, rain is a constant presence. Without a cap, water drips directly down the flue, soaking into the mortar joints and brickwork. This leads to hidden mold growth, rusted dampers, cracked flue tiles, and expensive structural masonry failure.
• Wildlife and Pest Intrusion: Warm chimney flues are highly attractive to nesting birds (like the local chimney swift), raccoons, squirrels, and bats. A heavy-duty stainless steel or copper cap features a secure mesh screen that allows smoke to vent out while keeping curious critters completely out.
• Spark Risk: Floating embers from a wood fire can land on your roof or nearby dry foliage, creating a serious fire hazard. Our caps feature integrated spark arrestors that catch these hot embers before they can escape.

Stop Throwing Money Away: Top-Mount Energy Dampers

Traditional “throat dampers” (the metal plates located just above your firebox) are notoriously inefficient. They are made of cast iron, warp over time due to intense heat and may also rust due to water in the flue, and never form a truly airtight seal. Leaving a traditional throat damper closed is structurally equivalent to leaving a window partially open 24/7 all winter long.

We solve this problem by installing advanced Top-Mount Energy Dampers (such as custom dampers designed by us with our local manufacturing partner, or Lock-Top or Lyemance systems).

Why Upgrade to a Top-Mount Damper?

• Airtight Silicone Seal: Installed at the absolute top of your chimney flue, these dampers feature a rubber or silicone gasket that seals completely airtight when closed.
• Immediate Energy Savings: By creating a tight cap on your flue, it stops warm air from being siphoned out of your house during chilly Seattle winters, significantly lowering your heating bills.
• Dual-Function Protection: When open, it functions normally for fires. When closed, it acts as a secondary barrier against rain, cold drafts, and insects. It is operated easily from inside your fireplace using a low-profile handle and cable system.

Signs Your Cap or Damper Needs a Replacement

Take a look at your hearth and roofline. If you notice any of these signs, your chimney is overdue for an upgrade:

1. Rust stains running down the outside of your chimney bricks or pooling on the floor of your firebox.
2. Scratching or chirping noises echoing down the flue, indicating a bird or animal has moved in.
3. A constant cold draft blowing into your living room, even when the throat/interior damper handle is set to “closed.”
4. A rusted, stuck, or broken handle that prevents you from safely opening or closing your current throat/interior damper.

Secure Your Chimney Today

Whether you need a standard stainless-steel cap, a custom multi-flue cap to cover your entire chimney top, or an energy-saving damper upgrade, our professional technicians are ready to help.

• Seattle Office: (206) 522-0290
• Kirkland / Eastside Office: (425) 821-6236
• Toll-Free: (800) 400-7559

Frequently Asked Questions About Chimney Caps & Dampers

Q: Why do I need a chimney cap if I already have a traditional throat damper?

A: A traditional interior throat damper sits right above your firebox and only seals the very bottom of the system. Without a chimney cap at the top, heavy Seattle rain, snow, debris, and pests can still pour directly down your open flue. This constant moisture completely saturates your interior masonry liner, rusting out your metal components and leading to hidden structural rot. A chimney cap acts as an external roof to protect the entire system.

Q: How much energy can a top-mount damper actually save me?

A: Traditional iron throat dampers have a loose, metal-on-metal design that warps over time, essentially acting like an open window that siphons your heated indoor air out of the house. Top-mount energy dampers utilize a specialized rubber or silicone gasket that creates an absolute airtight seal at the top of the flue when closed. Upgrading can eliminate up to 90% of heat loss through your chimney, leading to a noticeable reduction in your winter heating bills.

Q: What should I do if a bird or animal is already inside my chimney?

A: If you hear scratching, chirping, or rustling, do not light a fire under any circumstances—this is dangerous and can push smoke and hazardous fumes back into your home. The animal should be safely removed by a pest removal specialist or allowed to exit naturally first, and the flue must be cleared of any highly flammable nesting materials. Once the chimney is clear, a heavy-duty cap or top mounted-damper system with a secure wire mesh screen must be installed immediately to prevent wildlife from nesting in it again.

Our top-sealing dampers are energy-savers!

They seal tight with silicone-rubber gaskets, save energy in summer and winter, stop downdraft, seal out moisture to extend chimney life, prevent animals from entering your chimney flue, and help prevent chimney odors! They are easy to operate and come with a lifetime warranty.

Top-mounting dampers pricing starts at $695.00 including installation.

Fill out our estimate form to receive more information on chimney caps or top-mounting dampers or contact us for more information.