What Is A Flue Cap

When choosing a flue cap decide on the style that best compliments the home.

What is a flue cap.

For oval shaped flues make sure the cap is designed for the shape. All flue shapes for this type of chimney typically need a cap that attaches with either clamps or screws. A single flue chimney cap will sit on your existing flue and have a flange that will overhang the flue. 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.

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. Another option is a multi flue chimney cap. Flue stretcher chimney cap. Single flue chimneys with extended flues.

Chimney caps that slip into the flue finding a chimney cap for this type of flue is also very simple. Single flue chimneys with flexible metal liners. The right chimney cap fits the shape and size of your flue otherwise the cap itself serves little to no purpose. How chimney flue caps work.

On the sides of the flange there is four or more bolts attached to the cap to pressure fit the chimney cap to the flue. The inner diameter is the only measurement you need when capping a metal chimney liner. Without a cover. Just measure the inside diameter of your flue and search for a cap with that diameter.

Chimney flue caps have a big job to take care of. Some chimney flue caps are elaborate others are basic but none are solely for decoration. 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. Once you have.

A flue cap is typically made of sheet metal and some type of screen. This particular chimney cap is defective. Too thin cracked leaky missing an expansion joint at the flue tile and lacking a drip edge projection over the chimney top. Most multi flue chimney caps are made custom to your specific chimney.