One of my recent posts, More Attic Ventilation Is Not Going To Help, was about excessive moisture in an attic due to breaches in the air barrier between the indoors and the attic space.
As that post discussed, these by-passes can be obvious or hidden. There are often multiple breaches in the same home and some may be easy to find and other may be very difficult to fine. When I find these breaches I point them out and recommend that proper repairs be made. These breaches, if not a problem now, may become a problem in the future.
The picture below is an example of an obvious breach in the connection of the ceiling heat register to the insulated duct in the attic. The picture is looking down at the insulation and the pink insulation is part of the wrap that goes around the heat duct that runs to the ceiling register.
It was pretty easy to find because the heating system was running and this little hole in the insulation was blowing air in my face as I climbed through the access hatch into the attic.
If the heating system had not been running, I like to think I would not have just thought it was a mouse hole.
The truth is though—it does not look at all like a mouse hole because there is no trail.
I’m just grateful for the wind in my face.
By Charles Buell, Real Estate Inspections in Seattle
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