Some idiots have turbine type ventilators, and put a garbage bag
over them in the winter. This is to cause water vapor carried with
the heat to condense in the attic, and to encourage ice dams, and
to stop windblown rain from entering, since it would be stopped
by a ridge vent.

Zypher wrote in message
ink.net...
Some folks wrap a trash bag around the ventilator to do two things. Stop
the heat from leaving the attic in the winter, and stop sideways rain from
entering.

--
Zyp
"Bill Athanasopoulos" wrote in message
...
I have a turbine type ventilator installed on the roof. It was
installed
several years ago to improve a humidity problem which has since been
resolved.

Within the past year we have noticed a slight leak in the kitchen pantry
exactly beneath the ventilator. Water is evident only a few time a year
and
I cannot determine where it is coming from. I inspected the ventilator
but
did not see any obvious cracks in the base. I applied tar around the
base
in case there was a crack in the roof near the base, but the problem has
not
been solved.

The problem appears only certain times like after a heavy rainfall or
snow,
but it is not always consistent.
Any ideas?