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Condensation Problem

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Andy Holliman
12/5/2009
I live in a wood frame home with a standing seam metal roof. The home was built by my great-grandfather over 100 years ago and the roof is original to the structure. It has been well maintained with periodic applications of roof coat. I recently had a master bath installed, and have since been plagued with water leaking down the new wall. I found that the metal roofing is building up condensation and running down to the new construction. The metal is laid on purloins over rafters with no vapor barrier. What can I do to stop this problem before it damages my home? The only time I see the condensation is when it rains. Help!
Todd Miller
Isaiah Industries, Inc.
12/6/2009
Is the new bathroom vented outside same as before? What changed with the new bathroom that would cause this. Anything else been done to the home? new windows? Siding? Doors?
Guest User
12/6/2009
I installed insulated vinyl replacement windows. As far as the bathroom, there are two vent fans, but I don't think the "contractor" vented them out of the attic. They are rarely used though. Nothing else has been done structurally. What are your thoughts on a spray on insulation in addition to adding maybe an eves or peak ventilator?
Todd Miller
Isaiah Industries, Inc.
12/11/2009
I think you need to increase your attic ventilation.
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