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Depending on who’s doing the estimating, about 22,000 to 25,000 chimney fires happen each year in the United States. Given the fact that millions of Americans have fireplaces (and chimneys), that means chimney fires aren’t exactly common—but they’re not rare, either. Since they’re so dangerous, it’s important to take precautions to prevent them.

A well-constructed and regularly maintained brick chimney can last 50 to 100 years, potentially spanning multiple generations of homeowners. The exact lifespan depends on the quality of construction, materials, local environment, and maintenance. In contrast, a metal chimney typically lasts 15 to 20 years. While the main structure is durable, individual components have shorter lifespans and require more frequent replacement. For example, mortar may need repointing every 20 to 30 years, chimney crowns last 50 to 75 years, and liners can last anywhere from 15 to 50 years depending on the material (e.g., stainless steel vs. cast-in-place).

You can use normal bricks as cladding for a concrete or clay pizza oven or as a base underneath one. Fire bricks or solid clay bricks are necessary for an outdoor pizza oven’s floor, and you can use clay bricks for the rest of the oven.

Backdraft is usually caused by a ventilation or pressure problem. To stop it, you need to replace the air your fireplace draws out through the chimney, so open a window to try and increase the airflow. Sometimes turning on a kitchen or bathroom exhaust fan can help, but they could also be the cause of the backdraft depending on the air pressure inside your home. You may need to install a makeup air system (MUAS) or chimney fan.