How to Install Stainless Steel Flue Liner How to Install Stainless Steel Flue Liner

Stainless steel flue liners are used to protect your home from heat transfer that could potentially cause a fire, and to protect your chimney from combustibles that can corrode your chimney and shorten the life of the chimney. A chimney liner kit can be purchased to allow easy installation of a flue liner.

Materials/Equipment Needed

  • Chimney Lining Kit
  • Work Gloves
  • Tape Measure
  • Utility Knife
  • Hack Saw
  • Caulking Gun
  • Silicone Caulk
  • Screwdriver

Step One-Prepare Liner for Installation

Remove the shrink wrap from the liner using the utility knife. Have a second person hold one end of the liner while you stretch the liner out.

Find the bottom termination connector in your kit and attach it to the liner by tightening the hose clamp using your screwdriver. Using the hacksaw, cut the liner to the correct size. You can determine the size needed by measuring from the bottom termination connector to the top of the chimney crown and then adding one foot. Use work gloves when handling the liner, as there may be sharp edges.

Step Two-Insulating the Liner

Cut the insulation to the correct size. It should measure all the way to the bottom of the termination connector.

Lay the insulation on the ground with the foil side facing down and place the liner in the center of the insulation. Spray the adhesive included in the kit on the liner and the insulation. Wrap the insulation around the liner, leaving at least a one inch overlap. Secure the insulation by taping six inch pieces of the HVAC tape across the seam every two feet. Once you have finished, tape all the way down the seam using the HVAC tape.

Unroll the wire mesh and use it to cover the entire length of the liner. Use the hose clamps to secure the mesh at each end of the liner and then cut away the excess mesh.

Step Three-Install the Liner

Before lowering the liner, insert the T-Snout into the thimble in the wall of the chimney. Feed the liner down the chimney and stop once the hole of the termination connector lines up with the T-Snout. You may need two people during this step so the other person can notify you when the connector has passed through the hose clamp of the T-Snout.

At the bottom connector tighten the screw inside the T-Snout using the screwdriver. This will draw the T back to one piece.

Step 4-Complete the Top Termination

Place a bead of silicone caulk around the chimney crown and place the top plate over the liner. Press it firmly into the silicone. The silicone will prevent water from getting underneath the top plate.

Use your screwdriver to attach the horizontal set screws against the chimney top. Again, use the screwdriver to tighten the quick connect band to the liner.

Use the hacksaw to cut the liner level with the top edge of the top plate. You can complete the final step by attaching the cap to the top plate.

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