What Is A Flue Cap

A flue stretcher chimney cap not only protects the inside of your chimney but is also designed to protect the concrete crown area at the top of the chimney.

What is a flue cap. All flue shapes for this type of chimney typically need a cap that attaches with either clamps or screws. Why do i need a chimney cap the most important reason for capping your chimney is to protect the inside of your chimney from water which can lead to moisture damage. All of the smoke from your fireplace is directed out through the chimney flue on top of your roof which contains a hole that is at least one square foot wide. This particular chimney cap is defective.

They can be easily removed to clean the chimney and are available in many styles to compliment a home s decor. Some chimney flue caps are elaborate others are basic but none are solely for decoration. Flue stretcher chimney cap. Sheet metal is commonly used to make a flue cap.

Just measure the inside diameter of your flue and search for a cap with that diameter. Too thin cracked leaky missing an expansion joint at the flue tile and lacking a drip edge projection over the chimney top. Chimney caps that slip into the flue finding a chimney cap for this type of flue is also very simple. The right chimney cap fits the shape and size of your flue otherwise the cap itself serves little to no purpose.

Most multi flue chimney caps are made custom to your specific chimney. In our photo at left the chimney cap also called a mortar cap is the gray concrete visible around the projecting flue tiles at the top of the chimney. The inner diameter is the only measurement you need when capping a metal chimney liner. Single flue chimneys with flexible metal liners.

When choosing a flue cap decide on the style that best compliments the home. Single flue chimneys with extended flues. Without a cover. Once you have.

How chimney flue caps work. Chimney flue caps have a big job to take care of. A single flue chimney cap will sit on your existing flue and have a flange that will overhang the flue. Another option is a multi flue chimney cap.