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Chimney Liners / Ahren's Chimney Lining

What is a Chimney Liner?

The chimney liner is the channel that smoke and gases take to be vented out of your home away from your fireplace, insert, stove, furnace or boiler. These toxic materials are extremely hot, requiring a functioning chimney liner to protect any combustible areas adjacent to your chimney or venting. The chimney liner needs to be free of cracks or holes that may cause serious trouble. Many liners are constructed of clay tiles which are stacked to reach the top of the chimney. These tiles do deteriorate and may require replacement or installation of another type of chimney liner. To replace a clay tile chimney liner can be difficult depending on how easily the old liner can be removed.

Why You Need to Maintain a Chimney Liner

Chimney liner repair in Dubuque, IAA chimney liner in good condition is important for the safety and support of your chimney. A liner’s main benefit is the safety that it provides. Every chimney must have a liner inside to protect the chimney from chimney fires and protect the home from carbon monoxide gases among other things. Along these same lines, chimney liners also protect the walls of the chimney from the intense high temperatures and harsh by-products that can harm the structural integrity of the chimney. A missing or damaged chimney liner is a serious oversight that can have detrimental results if left unnoticed. Metal chimney liners are one option to consider when relining a chimney. This round metal piping must match the venting output requirements of your appliance or fireplace to work properly.



These flexible chimney liners are inserted into the chimney running from top to bottom and attached directly to the source, venting all material and gases up and out of the house. Metal liners may also be insulated with a wrapping for better perfomance.

Cast-in-Place Ahren's Chimney Lining System

Cast-in-Place Ahren's Chimney Lining SystemIt doesn’t matter what type of fuel is used, gas, wood, pellet, and oil burning appliances all must have a liner. Use of an unlined chimney results in deteriorated chimney walls, sometimes to the extent that the bricks will actually fall to pieces. At Dubuque Fireplace and Patio, we recommend the Ahrens Chimney Lining "cast-in-place" technique to both repair and prevent structural problems like these. Some type of chimney liner is necessary for every chimney but the Ahrens Chimney Liner will reinforce the structure while also ensuring the safety of your chimney and home. The Ahrens Chimney Liner will also allow the chimney to be “zero clearance” so that the exterior of the lined chimney can touch combustible building materials such as the roof rafters without resulting in a fire hazard.

Chimney Relining in Guttenberg IA, Dubuque IA,

Damaged chimney repair in Dubuque IA, Apple Canyon IL, Dyersville IA, Galena ILThe unlined chimney in this picture collapsed as a result of high winds. This major damage to the chimney and the home probably could have been avoided with the Ahren's chimney liner in place to protect and strengthen the chimney structure. We handle all types of chimney liner problems, from drastic structural issues like the one in the picture that require masonry rebuilding to straightforward relining, whatever the job, our chimney professionals are qualified and ready to help.

Damaged chimney repair in Apple Canyon, ILOther problems made worse by the absence of a chimney liner include harmful gases entering the chimney and mixing with moisture. The moisture can then seeps into the porous brick and cause rapid deterioration. When the temperature freezes, the water expands which causes the face of the bricks to fall off. This process is known as spalling. This unattractive look may also lead to structural problems if left unresolved. To prevent these problems and make repairs where necessary, contact the chimney service professionals at Dubuque Fireplace and Patio.

This picture shows a fireplace or chimney liner that was not properly installed. The venting was not bringing the very hot gases and particles outo of the chimney so they were escaping into the wood near the fireplace. The black charring on the wood panels is called pyrolysis. This occurs when the combustible material is burned at a low temperature. The temperature of this wood has been decreased to 250 degrees Fahrenheit.

To avoid similar dangerous problems, it is important for the proper burning clearances to be met so that a structural fire does not break out in the home. Clearance is a critical factor to consider with fireplace installation.

Any company can install a chimney liner in your home, but they may not all install it correctly.
Have your chimney liner installed properly by a fully insured, certified and reputable company with
over 22 years of experience - Call Dubuque Fireplace and Patio today at 563-582-5156!

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