I have a recently installed Harman pellet stove. When the stove was installed, the installers had to move over two outlet boxes to make room for the thimble. One is for power and the other is for a thermostat (for the future). After the stove was installed, the tile was installed. As a result of the way the tile was installed, I now have a gap between the thimble and one of the boxes. The opposite side of the thimble is the outside, so there is a fair amount of cold air blowing through the gap between the thimble and the junction box.
Here are a couple pictures of the thimble and the junction boxes. Any suggestions on what I could use to plug up that air leak? I am concerned about adding something that is flammable. I really don't want you guys posting about me in that way......
Here are a couple pictures of the thimble and the junction boxes. Any suggestions on what I could use to plug up that air leak? I am concerned about adding something that is flammable. I really don't want you guys posting about me in that way......