Sometimes what you are finding is from condensation on the under side of the
roof deck. When it is cold, moisture from inside the heated space escaping up
into the attic space condenses on the cold under side of the roof deck. It
freezes there and the ice builds up on the under side of the roof deck. when
things warm up the ice melts and the water falls soaking any ceiling insulation
until it begins dripping through.
We have had many discussions here on the various merits of attic ventilation
and of course vapour barriers. Tings like light junction boxes are quite large
ports for escaping moisture and it is why things like bathroom fans should not
vent directly into attic spaces.
If I was Han Solo I'd probably pet my wookie
----- Original Message -----
From: jim
To: blindhandyman@yahoogroups.com
Sent: Friday, February 19, 2010 8:19 PM
Subject: Re: [BlindHandyMan] Fwd: Speaking of icicles!!
wow that is the problem i have had for 3 years now.
and its a real drag as it just loves to leak over my side of the bed.
aaarg is that cold when you don't expect it at 3 in the morning.
this year i had a kid come over and use a snow rake to rake the snow off of
the roof.
also it leaked between the the front door frame and the inner wall.
causing the door frame to squeeze in and keep the door from closing.
finally i got smart and let a space heater blow on the wall and frame for
about 5 hours and it melted the ice in there and let me close the door.
Jim in Minnesota
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