Your fireplace liner is an important part of your chimney. The liner is your first line of defense against a chimney fire. The flue keeps the heat and smoke contained to help prevent the spread of fire in the case of a chimney fire. It is made of a protective fireproof material. It’s important to have your chimney inspected and cleaned once a year to make sure it is in proper working order. Call 2nd Generations Chimneys at 612-922-9600 in Minnesota for all your chimney needs including chimney restoration. They have been servicing and cleaning chimneys since 2001. To learn more visit them at www.2ndgenerationchimneys.com