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Blacks shadows on walls

6964 Views 27 Replies 10 Participants Last post by  vermontpainter
did an estimate last weekend, the livingroom is an addition, cathedral ceilings, a few years old, everything is painted white.
On the walls there are black shadows outlining where the studs are, almost a perfect photo negative. Not every 4 feet where taped, but every 16 inches. What is it?
The black color made me think of mildew, but how and why? Didn't see any water stains.

any chance it's a recurring problem?
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The shadows could be soot from burning candles. I have done a few jobs where it was dark around joists and every nail in the ceiling. In all cases people burned candles all the time. Good primer and paint took care of it.
Good luck, Mike
1 - 1 of 28 Posts
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