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    oceanbreezer67's Avatar
    oceanbreezer67 Posts: 5, Reputation: 1
    New Member
    		  
    #1

    Jan 24, 2011, 08:23 AM
    Frost buildup on interior wall sheathing?
    I live in Michigan and it appears to be a rather frigid winter this year. We are remodeling a mst. Bath and have demo'd to the studs in the shower and the tub deck surround area. Let me add that 3 walls in this room are exterior. Just happened to pull back the faced R-19 insulation to discover that the insulation was damp and the sheathing was frosted and wet. What shall we do? Don't want to have issues down the road after investing all this time and money into this project. Thank you
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Jan 24, 2011, 09:00 AM

    Can you tell if the moisture is coming from the outside or from the inside? Your Exterior walls show have a moisture barrier, especially since this is a bathroom. What is your house sided with?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #3

    Jan 24, 2011, 01:07 PM
    You may have a leak in the vapor barrier and humid air is leaking into the wall and freezing or you may also have an ice dam on the roof that is letting melted snow water into the wall.
    oceanbreezer67's Avatar
    oceanbreezer67 Posts: 5, Reputation: 1
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    #4

    Jan 24, 2011, 03:53 PM
    Comment on ballengerb1's post
    The exterior of the home is brick built in 1999 but not sure if the home was built correctly with vapor barriers and so on.
    oceanbreezer67's Avatar
    oceanbreezer67 Posts: 5, Reputation: 1
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    #5

    Jan 24, 2011, 03:55 PM
    Comment on ballengerb1's post
    One theory is that the walls have been demo's for a 2-3 week period on the interior and the heat from the interior is mixing with the cold air from the exterior creating frost on the inside of the sheathing. If this was a long turn problem I would
    oceanbreezer67's Avatar
    oceanbreezer67 Posts: 5, Reputation: 1
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    #6

    Jan 24, 2011, 03:55 PM
    Comment on ballengerb1's post
    Have thought I would have had microbial growth?
    oceanbreezer67's Avatar
    oceanbreezer67 Posts: 5, Reputation: 1
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    #7

    Jan 24, 2011, 03:56 PM
    Comment on ma0641's post
    Inspected exterior no ice dam. Thanks
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