Chimney pots have been a prominent feature on European rooftops for centuries. They started out as terracotta pots designed to extend chimney heights and draw higher, less polluted air in densely populated cities. Today, they fight drafts, stop animals and debris from entering through the chimney, and protect its structure from moisture damage. With design choices ranging from traditional clay to modern metal, they can also enhance your roofline’s visual appeal.
Types of Chimney Pots
Modern homeowners have a variety of chimney topper options to choose from, each with its own advantages and design characteristics.
Traditional Clay Chimney Pots
Chimney pots made from terracotta remain a popular choice for traditional homes. You can find them in different shapes and sizes, including these:
- Crown-top pots: These designs feature a wide, flared top resembling a crown.
- Bishop-style pots: Bishop-style pots are tall and slender with a pointed top.
- Beehive pots: Beehive pots are round and tapered.
Clay pots offer excellent durability and heat resistance. You can leave them their natural reddish-brown color or glaze them to match your home’s color scheme.
Beyond new pots, salvaged antique chimney pots are a sought-after find. Dealers like Recycling the Past in Barnegat, New Jersey, stock antique English pots that can be reinstalled on a working chimney — and even cracked ones find a second life as decorative planters indoors or in the yard. With manufacturers like Superior Clay Corporation offering more than 45 standard styles plus custom designs, there’s no shortage of options for homeowners looking to finish their chimney with period-appropriate character.
Modern Metal Chimney Pots
Metal chimney pots are a more contemporary option made from stainless steel, copper, or galvanized steel. They offer more durability, functionality, and extra safety features like spark arrestors and animal guards.
Some units cover individual flues on a multi-flue chimney, while others cover multiple flues with a single pot. You can also buy a chimney shroud, which is a larger unit that encases a whole chimney top.
The Benefits of Chimney Pots
Chimney pots offer a few practical advantages that can improve the performance and longevity of your chimney system. They include the following:
- Improving draw: One of the primary functions of a chimney pot is to enhance the draw of your fireplace. They create a more aerodynamic exit point for smoke and gases and prevent downdrafts when wind blows across the top of your chimney and forces smoke back inside.
- Stopping animal intrusions: Birds, squirrels, and other small animals often look to chimneys for wintertime warmth. This risks their safety, and could also damage your chimney lining or introduce other pest issues. A pot stops animals from coming in but still lets smoke and gases go out.
- Cutting down on water damage: Rain, snow, and even morning dew can seep into your chimney, deteriorating the masonry and internal components. Your chimney pot is a protective umbrella that directs water away from the flue opening so the brick underneath stays dry.
Chimney pots also draw visitors’ eyes upward and add visual interest to the roofline. In the past, architects used them in pairs to make home facades symmetrical.
Stuart Matthews, an importer of English chimney pots, says they’re “all about fun” — and some English potters still make custom designs according to customers’ flights of fancy, from turrets to candy twists to horned beasts. Today, manufacturers like Superior Clay offer more than 45 standard styles, plus custom designs, so homeowners can recreate a Victorian feel or opt for clean, simple lines.
TOH Project Note: On a past This Old House project, Tom Silva hired a crane to cap a tall brick chimney with a 200-pound terra-cotta chimney pot — a reminder that these architectural details can be substantial. Some English-made pots weigh up to 200 pounds, and installing them may require both a mason and a cherry picker to get them safely in place.
How To Choose the Right Chimney Pot
Selecting the appropriate chimney topper for your home involves considering both practical and aesthetic factors.
Considerations for Material
Choose a material based on what would be functionally compatible with your chimney, your durability preferences, and how much maintenance you’re okay with. Clay and terracotta tend to require more maintenance than metal models.
On the metal front, stainless steel is a low-maintenance option for most climates, and galvanized steel offers similar benefits in a more cost-effective package. If you want to balance functionality with visual appeal, consider copper, as it develops a patina over time.
Keep in mind that traditional terra-cotta pots can be surprisingly heavy — some weigh up to 200 pounds, according to English pot importer Stuart Matthews, and installing them may require both a mason and a cherry picker. That weight is part of what makes clay so durable atop a chimney, but it also means your chimney structure needs to be sound enough to support it. Have a mason evaluate your chimney’s condition before committing to a heavyweight pot.
Sizing Your Chimney Pot
Size your chimney pot properly so it works at its best, and find a model that meets local codes and fits your overall roof profile. At a minimum, it should extend at least 5 inches beyond the flue opening on all sides. If you have a multi-flue chimney, make sure the topper covers all openings adequately.
Pro Tip: Mark McCullough, TOH’s masonry contractor, notes that many factors affect chimney draft, including “the size of the firebox opening, the shape, size, and length of the flue, the airtightness of the house, and the height of surrounding structures.” When sizing a chimney pot, use the 10:1 ratio — the cross-sectional area of the flue (including any pot extension) should be one-tenth the area of the firebox opening — to ensure proper draw.
Installation and Maintenance of a Chimney Pot
We generally recommend hiring a professional to install most chimney pots and toppers. If you don’t know where to start, they can assess your chimney’s condition, handle any existing issues, and offer a warranty plan for the chimney pot and their work.
On installation day, the pro will set up a sturdy ladder to climb onto your roof and hoist up the pot. Then, they’ll thoroughly clean the chimney crown and fasten the pot with the appropriate mortar or hardware. A waterproof sealant around the base of the topper finishes the job and controls leaks.
After the installation, you should inspect the pot from the ground once per year. Check for signs of rust, cracks, and loose mortar. A professional chimney sweep can perform a closer inspection and clean debris accumulating on and around the topper. This will help to extend the pot’s life span and prevent costly repairs.
