Following is a glossary of terms for your reference.

ALUMINUM RELINING PIPE: Aluminum used as a relining pipe when used with a low efficiency gas furnace. Can only be used with devices that produce neither enough heat or enough moisture to constitute the need for a more durable relining system.

CARBON MONOXIDE: (CO) A colorless, odorless, produced by burning material containing carbon.

CHIMNEY: A vertical system for venting hot flue gases or smoke from a boiler, stove, fireplace or furnace to the outside atmosphere.

CHIMNEY CAP: A protective covering for the top of a chimney. Designed to protect the chimney lining and mortar crown.

CREOSOTE: Combustible deposit that originates from condensed wood smoke. A natural by product from burning wood.

DAMPER: A retractable device inside a chimney flue which regulates air flow and smoke.

DRAFT: The force or pressure that causes gases to flow up and out of a chimney.

RIGID LINING PIPE: Non-flexible stainless steel pipe used for relining masonry chimneys. Used primarily in chimneys that do not have offsets.

STAINLESS STEEL CHIMNEY LINER: Stainless steel pipe, either rigid or flexible, made for relining flues of masonry chimneys when the original clay liner has cracked or broken. May also be used to create a lining in a masonry chimney that was made without a liner.

STOVE PIPE: Metal pipe used to vent a wood or coal stove into a masonry chimney.