A chimney is a structure that provides ventilation for hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere.
Flue – The flue is the large open space through which combustion gases vent. It’s essential to open the flue before starting a fire in your fireplace; otherwise, smoke will billow into your home.
Flue Lining – The flue’s safe operation depends upon there being at the most very little flammable debris attached to the walls of the opening. A flue lining is usually made of stainless steel or clay tile which is formulated expressly for chimneys. Over time, an accumulation of flammable debris is only natural, which is why it’s important to employ the services of a chimney sweep at least annually.