Why Your Chimney Flue May Need a New Liner

Chimney Flue Liners

A flue liner needs by codes and standards to cover the inner surface of the flue of your chimney. Relining a chimney is a procedure during which the damage or failure liners remove and a better, safer system is replaced. There is a great variety of materials comprising these liners. This includes, but not limited to, ceramic tiles, firebrick, stainless steel, cast-in-place masonry mixtures. Or listed lining systems of similar materials. Flue liners for residential and low heat chimneys must be separated from the chimney wall. They can be separated by an air space to protect the life of each separate flue system. Flue liner tiles can crack due to the rapid heating of a cold flue or abusive maintenance. As well as damage from a chimney fire. A cracked liner tile is not safe and must be replaced before burning further.

Faulty appliances are actually the cause of a small percent of chimney fires. Rather, the major causes are either improper installation or a badly maintained flue system. Deteriorating liners may be allowing smoke or creosote to seep through the liner into the walls of your chimney. Relining your chimney will actually prevent excessive creosote buildup when venting a wood burning fireplace or stove.

When a chimney fire has occurred or a tile is cracked by some other means, there are other directions a homeowner can take to

Chimney liner kits make installing a metal flue liner in your chimney less complicated.
Chimney liner kits make installing a metal flue liner in your chimney less complicated.

reline the chimney. Stainless steel liners, whether stern or flexible, are excellent options. Rigid liners are made of not magnetic stainless steel. They come in round tubes five to ten inches in diameter and one to four feet long. Flexible stainless steel liners are much thinner and are of ribbed construction. The flexible liners are easier to install but the rigid liners are more efficient due to their smooth walls.
Aluminum liners are designed to line very specific types of gas-fired systems, but not gas fireplace logs. Chimney caps are recommended for any type of liner, whether tile or metal, and proper insulation should be installed.
A cast-in-place liner mixture requires the careful installation. They need to have of fitted, inflated, round or oval bladders and casting a masonry material around them. Older or weak chimneys can benefit most from this style of flue lining because, after curing, this masonry material increases the strength of the chimney.
Sometimes a homeowner may come across a situation where a company gives a choice of a full reline or a reline going about six feet up the chimney. A few reasons why you should choose the full reline would be that with the six foot liner, your appliance or fireplace is guaranteed to work at less than 100% efficiency. Also, the heavy liner will have to be removed for each cleaning which requires more effort which means more money.

It is very important that you do not burn a fireplace if there is a cracked flue tile. Contact your local chimney repair companies or visit amchimney.com for more information and answers to questions regarding your own chimney. Once flames move through the cracked or breaking liner, there is no stopping them from lighting the entire rest of the chimney and roof aflame. Allow the experts at amchimney.com to answer all your questions!

Clay Lamb

Clay Lamb is a Cincinnati Chimney Sweep contractor and the executive producer of the YouTube channel, podcast, and blog Ask the Chimney Sweep. He is also an award-winning educator and public speaker in the chimney and fireplace industry. AsktheChimneySweep.com….Educational Videos AmChimney.com….American Chimney Cincinnati, OH We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Recent Posts