All About Chimney Liners

While your chimney liner may be one of the most important parts of the chimney system, it is often one of the most overlooked — one reason being because you can’t exactly look at it! The liner is the part that covers the inside of the masonry from top to bottom, working as a protective barrier.  Regardless if your chimney is used to vent a woodstove, fireplace or furnace, most have clay flue tiles stacked on top of one another, forming a liner called the flue. Your flue liner should be sealed tightly to protect your chimney. Over time, dangers can develop that compromise the efficiency and safety of your home’s chimney. The chimney liner must be maintained and kept in good condition or else smoke, heat, and CO will enter the airspace of your chimney and walls causing serious safety concerns, including, but not limited to: carbon monoxide poisoning and fire beyond the designated fire walls. Neighborhood Chimney Services is here to help!



The chimney liner actually has multiple jobs, and they’re all very important.    

  • First, the liner protects the masonry from the corrosive chemical byproducts of the fire. If allowed to sit on the masonry, soot and creosote can damage it from the inside out.
  • The liner also creates a properly-sized vent for your fireplace. Without the liner, the chimney flue may be too large, making the chimney inefficient. Or it may be rough, disrupting airflow and promoting buildups.
  • Finally, the liner serves as a barrier, protecting the home from harmful chemicals that can pass through the masonry and keeping heat from transferring to building materials in the house.

According to the CSIA (, problems such as gaps, cracks and spalling in your chimney’s flue can present serious risks to your home and family, because your chimney can no longer perform its intended function – to safely contain and vent the products of combustion to the outside.  We are Wolcott’s only CSIA Certified Company in town!

The Solution:

Stainless steel chimney liners are typically used to re-line chimneys that are cracked, broken or contain deteriorated terra cotta flue tiles. These liners are also used during the installation of a new high-efficiency gas powered appliance in which a smaller flue size is needed. Properly installing a UL Listed, tested and properly sized stainless steel chimney lining system is the most popular way to retrofit a chimney that is in need of repair or relining. Neighborhood Chimney Services of Wolcott, Connecticut only installs chimney liners produced by manufacturers that use only the highest quality, certified mill alloy. Flexible with high acid fighting capability. Listed and tested by UL Laboratories to UL 1777 and ULC-S635 standard for zero clearance installation. 316L liners can be used to vent wood, wood pellet, coal and non-condensing gas and oil fired appliances with efficiencies of 83% or lower. These characteristics make it the best choice for venting all standard efficiency installations. All stainless liners we install come with a Lifetime Warranty from the manufacturer!



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