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Interior Contains discussions about the interior portion of a home inspection. This includes stairs, walls, floors, ceilings, smoke detectors, et cetera.

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  #1  
Old 9/23/09, 7:37 PM
Anthony A. Cassady's Avatar
Anthony A. Cassady Anthony A. Cassady is offline
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Default what would cause drywall to do this??

A friend asked me today about a house he was looking at. The drywall on the main level is stained black where the wall studs and ceiling joists are located and only on the exterior walls of the home. The home was built in the late 90's and is a foreclosure...any ideas.....thanks in advance...sorry for the poor pictures they were taken with his phone.
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  #2  
Old 9/23/09, 7:39 PM
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Michael Larson Michael Larson is offline
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Default Re: what would cause drywall to do this??

Ghosting.

The wall studs are cooler and candle smoke and other pollutants condense more on them than the rest of the wall.



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  #3  
Old 9/23/09, 7:39 PM
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Michael Roberson Michael Roberson is offline
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Default Re: what would cause drywall to do this??

^^ what he said. Ghosting.
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  #4  
Old 9/23/09, 7:43 PM
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Mark Nahrgang Mark Nahrgang is online now
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Default Re: what would cause drywall to do this??

Quote:
Originally Posted by mlarson View Post
Ghosting.

The wall studs are cooler and candle smoke and other pollutants condense more on them than the rest of the wall.
Agreed.
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Old 9/24/09, 7:52 AM
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Shawn Rowe Shawn Rowe is offline
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Default Re: what would cause drywall to do this??

Try this.. http://www.homeenergy.org/archive/he...98/980109.html



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  #6  
Old 9/24/09, 8:36 AM
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David A. Andersen David A. Andersen is offline
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Default Re: what would cause drywall to do this??

You can also call it "thermal bridging".

As for the source, do not overlook the HVAC/furnace performance or other fuel fired appliances and fireplaces.



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  #7  
Old 9/24/09, 9:05 AM
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Ricky K. Kie Ricky K. Kie is offline
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Default Re: what would cause drywall to do this??

I agree Ghosting.......I see it more often with homes heated with electric.



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