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Severna Park, Maryland
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Gaston, Oregon
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 air movement?
[#2] Posted: 04/08/2012 - 12:19:31 PM |  |  |
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The stains are the result of moisture the moved there from the inside, not the outside.
I'd skip the bleach and the caulk.
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Jim Katen, Oregon
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Chicago, IL
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air movement?
[#3] Posted: 04/08/2012 - 12:44:42 PM | | |
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I don't think I've ever opened up a wall or ceiling in a bathroom when I didn't see something like this.
It's what happens when there's a vapor retarder (plywood) on the exterior in northern climes.
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Kurt in Chicago
"If I smell it, it goes in the report".............Phillip Smith...2012
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Severna Park, Maryland
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Collins, NY
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air movement?
[#5] Posted: 04/09/2012 - 06:33:42 AM | | |
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If you can stomach the cost is a great place for foam, but a buck a board foot is pretty steep for DIY insulation.
Skip cleaning it unless it's moldy. Insulate it with glass, it's cheap and it will outperform the rest of the envelope from the sounds of things. Enclose the exterior walls before you place the tub, it's the plenum space under the tub open to the stud cavity that caused that stain.
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Tom
http://clearcreekhomeinspection.com/
Life is tough enough as it is, it's tougher when your stupid. Don't do stupid things.
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Friday Harbor, WA
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air movement?
[#6] Posted: 04/09/2012 - 08:03:01 AM | | |
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Agree with the above. Skip the bleach and don't bother caulking the studs to the sheathing, although it is worth finding air leakage in the room and caulking or foaming it, after all mechanicals and before insulation. Use a large box fan to suck air out of the house, then crawl around the remodel room and find all the places it's coming in. After drywall, crawl around again and foam all the holes for plumbing stubs, electrical boxes, etc. If you can keep air from blowing out of the room through those cracks, it won't get in your stud bays and cause that staining.
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Chicago, IL
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air movement?
[#7] Posted: 04/09/2012 - 1:01:38 PM | | |
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Yes, the open wall under the tub is always the culprit. It's a good idea to put 1/2" foam on the inside of the wall to cover up that opening.
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Kurt in Chicago
"If I smell it, it goes in the report".............Phillip Smith...2012
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Gaston, Oregon
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Severna Park, Maryland
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Gaston, Oregon
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60s Insulation.JPG
