Installation of insulated stainless steel chimney liner.

Chimney Liners

stainless steel liners | utility liners | smoke chamber parging

Chimney relining is critical when the liner system can no longer contain the products of combustion (smoke, flames, gases). Installation of an appliance-appropriate liner and termination cap restores the system to safe functioning.

Installation of an insulated stainless steel chimney liner.
Chimney liners

Stainless steel liner

When clay flue tile liners reach the end of their lifespan, the most efficient and effective way to restore the lining system is to install a stainless steel chimney liner. A proper fit typically requires breaking-out and disposal of the damaged clay flue tiles. Liner installation includes the following:

  • Insulation, via a pre-insulated liner kit or a vermiculite-based material that forms a thermal insulation barrier.
  • Parging of the smoke chamber, to fill voids and smooth jagged edges.
  • Installation of a top-mount damper, to seal the chimney from the top.

Chimney liners

Smoke chamber parging

The smoke chamber funnels smoke up from the firebox into the flue. It is typically built from brick that corbels inward, forming an upside-down funnel. Parging this area with refractory mortar serves three purposes:

  • Smooths jagged corbelling, improving draft and reducing creosote buildup.
  • Fills in any gaps or voids in the smoke chamber walls, which left alone could allow heat to transfer to surrounding combustibles.
  • Creates a smooth transition from the smoke chamber to the liner during installation of a stainless steel liner, and secures the liner in place.
Smoke chamber parging

Installation of a utility liner.
Chimney liners

Utility liners

Most galvanized metal utility liners have a lifespan of about 20 years before they show signs of rusting. A compromised utility liner can allow for the dangerous backdrafting of flue gases. Several options are available for relining a boiler, water heater, or furnace, including a SmartFlex aluminum liner or All-Fuel 316 stainless steel chimney pipe. The appropriate liner will depend on fuel type and appliance BTUs. Installation always includes the proper termination cap to prevent water and animal entry.

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