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Greetings, all I’ve a problem similar to Ray Mann’s discussion, below. However, my house is an older stick-built, insulation on the attic floor (stand-up attic space), and a very ‘open’ attic space. In other words, it breathes very well. A new roof was installed about five years ago. Old roof was removed to the decking. I know the roofers put felt down; I watched ’em. Now, after a recent snow, I was putting away the Xmas decorations and noticed that the decking on the shade side of the house was wet. Not dripping, but wet. I have not looked for this problem before, so I’ve never noticed it before. Is it possible that the moisture from the snow is migrating thru the shingles and the felt, and saturating the deck? If so, is it something to worry about? The deck is regular ply, not OSB. Any insight would be appreciated. Thanks.
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Replies
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A good place to start might be to check any place where wiring, plumbing, or ductwork come into the attic .....warm, moist air may be condensing on your roof.
*I had thought about that. It is an older kit home with very little insulation (about 3" of rock wool) on the floor. I would have thought that if it was a humidity problem, it would have been all thru the attic, not just on one select side. Long term project is to get rid of all the rock, foam seal the gaps in the plaster lath, and re-insulate, though the jury is still out on the better bet for this particular house, fg or cel insulation.
*Ice damming?Bill
*No, no ice damming. The house is unusual in the aspect that the roof overhangs are open-rafter; in other words, the overhangs have no soffets. The exterior walls go to the roofline; the interior walls stop at the attic level. I did check to see if the rock wool was wet in any way, and it did not appear to be. This has me a bit stumped. I am appreciating the feedback, though!
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Greetings, all I've a problem similar to Ray Mann's discussion, below. However, my house is an older stick-built, insulation on the attic floor (stand-up attic space), and a very 'open' attic space. In other words, it breathes very well. A new roof was installed about five years ago. Old roof was removed to the decking. I know the roofers put felt down; I watched 'em. Now, after a recent snow, I was putting away the Xmas decorations and noticed that the decking on the shade side of the house was wet. Not dripping, but wet. I have not looked for this problem before, so I've never noticed it before. Is it possible that the moisture from the snow is migrating thru the shingles and the felt, and saturating the deck? If so, is it something to worry about? The deck is regular ply, not OSB. Any insight would be appreciated. Thanks.