How to Replace a Brick Chimney Lining

A chimney carries smoke and dangerous gases such as carbon monoxide away from the home. A brick chimney requires a lining to prevent it from leaking smoke and gas. Homeowners with basic repair skills can replace the lining in a brick chimney.

Things You Need:

• Chimney liner


• Metal saw


• Measuring tape


• Tee cap


• Screwdriver


• Insulation wrap


• Scissors


• Duct tape


• Wire mesh


• Hose clamps


• Tin snips


• Silicone sealant


• Draw band
  
  

Instructions:

1. Cut a length of brick chimney liner with a metal saw. The length of the chimney liner should be about six inches longer than that of your brick chimney.


2. Fasten a tee cap to one end of the brick chimney liner by using the screws that came with the tee cap. This end will be the bottom of the brick chimney liner.


3. Cut a length of insulation wrap equal to that of your brick chimney liner with a large pair of sharp scissors. Wrap the insulation around the liner with the foil side on the outside, ensuring that the ends of the insulation overlap each other by at least one inch.


4. Secure the insulation in place with strips of duct tape one foot apart. Place another strip of duct tape all the way down the seam of the insulation.


5. Wrap the insulated liner in wire mesh from top to bottom, ensuring that it fits snugly. Secure the wire mesh with a hose clamp on each, and trim the excess mesh with tin snips.


6. Transport the chimney liner assembly to the roof and insert the bottom end all the way down the chimney. Trim the top end of the liner with tin snips so that it does not extend more than four inches above the crown of the chimney.


7. Place the top plate atop the brick chimney liner. Secure it to the liner with silicone sealant using a heavy bead.


8. Put the top cap for the brick chimney liner on the top plate. Secure the top cap in place with a draw band.