on 6/5/2008 1:12 AM Aaron Fude said the following:
Hi,

What's the point of caulking the roof flashing for the exaust fan
vent?

Specifically, I'm talking about what takes place at 2:20 in the
following video:

http://youtube.com/watch?v=IrwWOW9RE3Q

It seems to be protection against the water flowing up. Is this done
to protect agaist the moisture drawn up by capilary forces? And in
that case, are the shingles themselves caulked?

Thanks!


Because you do as much as aesthetically possible to prevent water from
entering the house when installing anything that goes through the roof,
so you don't have to do it later, before fixing the water damage inside.

--

Bill
In Hamptonburgh, NY
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