Builders are never rnore surprised than when they walk into one of their newly built model homes and find black stains at wall-to-floor joints and on previously pristine carpeting underneath doorways. What causes these stains and how can builders and homeowners prevent them?
Black stains in houses: soot, dust or ghosts?
![](https://www.aivc.org/sites/default/files/default_images/default_image_5.png)
Year:
1998
Bibliographic info:
USA, Home Energy, January/February 1998, pp 15-21.