Chimney liner - wall distance

Be sure to check  the required local and national codes if you want to have the proper distance between the chimney liner and the house wall.

Tools and materials

You can purchase a liner kit from about any home improvement shop. For chimneys less that 25 feet high you can find a 10:1 ratio liner and for chimneys higher than 25 feet, a 12:1 ratio liner.

A chimney that is even 600 square feet, insulation included, requires a liner of only 9 inches.

  • Flex tubing
  • Stack off (boot)
  • Insulation plug or bottom plate
  • Installation instructions


Insulating the space between the liner and wall is crucial, pouring cement in between. This way you will respect the local building codes but also keep the heat of the chimney in the house.

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