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Jim
11-09-2003, 05:19 PM
Over the years I have noticed in many houses gray lines on the sheetrock where the studs are. I first thought it had to do with heat transfer from the outside but I have aslo seen it on inside partitions. These lines do not wash off and have to be re-painted to get rid of them. Does anyone know what causes this?

Bob R
11-16-2003, 07:45 PM
This sometimes happens from burning candles.

GaryR
11-17-2003, 08:34 PM
Jim,

Do a search. I believe this subject had come up before and it was interesting to here peoples thoughts on it. The candle thing sounds familiar though.