Tag Archives: ghosting


If you own a wood stove and live in an under-insulated house, there is a good chance you’ve seen mysterious-looking stains on your walls and ceilings. This “sooting”— a phenomenon known as “ghosting”— typically suggests incomplete combustion byproducts condensing upon cooler framing members. 

In other words, hot meets cold, and then invites dust and/or soot particles to the party. While it may resemble mold, it’s usually not.

I recently noted this during a visit to a home in Friday Harbor where visible soot outlined underlying framing elements. As you can see in the picture, ghosting can sometimes create unique patterns. 

If your home is experiencing “ghosting,” learn about addressing the possible causes

If you have questions or comments about “ghosting”-related issues, tweet me (@AIHomeInspect).


by Nick Gromicko and Kenton Shepard, InterNACHI

Ghosting is a term that refers to discoloration that appears on surfaces in a home. The source of this discoloration can be a mystery to anyone not familiar with the phenomenon. Ghosting is the result of particulates attaching themselves to surfaces.  “Particulates” is a catch-all word for any kind of particle small enough to be suspended in the air. Small dust particles from soil, animal dander, cooking residue, and soot residue from a fireplace and candles are all common sources of household particulates. Continue reading