Condensation Inside Chimney Liner

Instead of allowing moisture to evaporate the condensation may just soak the brick interior and then drip down.

Condensation inside chimney liner.

Leaks in the chimney structure a condensation effect also can happen within the chimney itself. As you know if you plug the top of the chimney above the fireplace the flue liner condensation will trickle down to the fireplace. You will need to protect the insert from moisture problems. The wetness on the outside faces of the chimney occurs when the condensate migrates through the mortar.

Then reconnect the flue to the other end of the run. On occasion we have identified the wetness around a chimney to be due to the condensation of the airborne moisture in the exhaust gases discharged by the furnace on the cold chimney walls. In some cases the heat from the fire will cause the condensate to evaporate. Condensation inside the chimney can cause a leaking chimney.

You position the branch of the tee so it is facing down toward the floor. This is often a problem when the liner used is not the ideal size or material. Usually a new liner will resolve this problem. When a fire is started the new warm air moving into the chimney comes into contact with the cold chimney walls causing condensation.