Many professionals recommend a stainless steel chimney cap, which costs $55 to $390. This is, in part, because stainless steel is stronger and more durable than galvanized steel.

Chimney caps can easily be installed with a hand screwdriver or a cordless drill. However, it's best to have a mason or chimney technician replace the flashing and flue lining, if any.

Q. This week: The brick chimney on our 1930's era house looks like it needs repair. From the ground I can see cracks in the bricks, and some of the cement and pieces of the bricks have come off and ...