Chimney caps may be installed by a few different professionals, including a chimney sweep or a mason that specializes in fireplaces and chimneys. A gas fireplace technician is the best person to install a chimney cap on a gas log fireplace vent to be sure the cap is appropriate for the application.

A chimney cap costs about $300 on average. The prices range from about $75 to $1,000, depending on the material, size, any repairs needed, and if your chimney cap requires custom fabrication. Chimney caps are usually made from galvanized steel, copper, or stainless steel. Additional costs may include hiring a chimney sweep to clean the chimney before a cap is installed. 

Yes, it’s worth capping a chimney. Here are several reasons to install a chimney cap:

• Keep out rain, snow, wildlife, and other debris

• Help prevent chimney fires

• Reduce your chimney’s exposure to moisture

• Maintain your chimney flue liner

• Help reduce energy bills by helping regulate your home’s temperature

Typically, a chimney cap will last from three to 25 years. This wide range is due to variables like climate, the material the cap is made from, and how often you use your fireplace. Regular inspections and maintenance can help extend the life of your chimney cap.

The best style of chimney cap for a brick chimney is one that fits tightly around the brick top of the chimney. The cap should have a screen to fully enclose it to keep animals out. The best materials include stainless steel, copper, or aluminum that fit tightly or are custom fabricated for a perfect fit on your chimney.