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There are fire codes for a fireplace mantel made of wood or other combustible material. The mantel must be mounted at least six inches away from the fireplace opening on all sides with a non-combustible material—like stone or brick—installed between the mantel and fireplace. Building codes and regulations will vary based on your location, so before beginning the project, research the requirements in your area.

The lifespan of a chimney damper depends on several factors, including its material, how often the fireplace is used, and the amount of debris that enters the chimney. With proper maintenance, an average damper can last about 20 years. To ensure it is functioning correctly, it is best to have it professionally inspected. Some experts recommend an annual inspection, while others suggest having a chimney sweep inspect and clean it every two years. A professional can assess the damper's condition and determine if a replacement is necessary.

Certain fireplace repairs will require that your contractor is licensed, including anything that involves moving, installing, or repairing gas lines. In that case, your professional will need to be a certified plumber. You can use Angi’s licensing lookup tool to confirm that the company you’re hiring is properly licensed. Most states don’t have specific license requirements for other fireplace repairs, but most demand at least a general contractor’s license. It’s also a good idea to look for companies certified by the National Fireplace Institute, as those pros tend to be more qualified to carry out the repair.

There are several ways to determine if your chimney or fireplace damper is open or closed. A simple method is to check for airflow by placing your hand near the fireplace opening; if you feel a draft or hear wind whistling, the damper is open. An open damper might also make the room feel cooler, similar to the outdoor temperature, or cause your HVAC system to work harder than usual. For a more definitive test, you can try a visual inspection, although it may be difficult to see. Alternatively, you can light a small piece of paper and observe the smoke; if it is drawn up the chimney, the damper is open. Always use the damper handle to adjust its position.