shadow/staining of wall studs showing thru drywall

[James Eubank]

See the attached photo. Walls had this shadow/staining outline of the vertical studs and header, only on the interior surfaces of the exterior walls. On some walls more obvious, on others less obvious. Wall surface was drywall with a thin texture (poorly applied). Don't know if these studs were wood or metal. Studs in the basement below were metal. Anyone run across this before?

[Ralph Brady]

This should help:

http://www.bradyinspects.com/files/ghosting.pdf

[James Eubank]

Thanks for that article, Ralph. It had some good info, but I didn't see a reference to what I found today, that existed on all interior drywall surfaces (of exterior walls only). I did find out from a neighbor who was around when it was built, that the studs are metal. Any other ideas??

[Ralph Brady]

I thought the article talked more about the gohsting on the wall where the studs are. I guess it doesn't talk much about it. There is a picture near the top, which shows it.
As far as I know it is a static or condensation type thing which caused dirt/dust/soot to deposit at certain spots. I have not heard that metal vs wood makes any difference.

[Louie Flores]

Ralph, good article thanks.
Lou

[James Eubank]

Anyone else have suggestions? Thanks!

[Richard A. Hetzel]

See my reply under "Interiors".

[Rick Maday]

James,
I think you have help here...

http://www.nachi.org/forum/f2/strange-setup-43157/