Retrospective - Black Stains in Houses: Soot, Dust, or Ghosts

May/June 2014
A version of this article appears in the May/June 2014 issue of Home Energy Magazine.
Click here to read more articles about HVAC
May 01, 2014
An experienced ghost hunter explains the possible sources of and solutions to black soot under doors, on walls, and in other places in homes.
By now, we’ve all heard about “black soot” or “ghosting”—one of the hottest topics in the building industry today. The dark marks have been seen on interior and exterior wall surfaces; on carpet surfaces at wall-to-floor connections or door undercuts; on ceilings; on furniture, heating and air conditioning filters, blinds, drapes, doors, countertops, television screens, and computer monitors; and on the top side and leading edges of ceiling fans.

To read complete online articles, you need to sign up for an Online Subscription.

Once an order has been placed there is an automatic $10 processing fee that will be deducted with any cancellation.

The Home Energy Online articles are for personal use only and may not be printed for distribution. For permission to reprint, please send an e-mail to

SPONSORED CONTENT Home Energy Minute #3: WINTER 2019 Learn more! Watch Video
Email Newsletter

Home Energy E-Newsletter

Sign up for our free monthly