becoming more and more of a concern
because it is product caused by
progress. True, with newer
technology in-home insulation and
thermal improvements, today’s houses
are becoming “tighter” and more
energy efficient; excess humidity in
the air is now being trapped inside.
Windows are usually blamed because
they are the first place the
condensation can be seen.
But, what about between the walls
and in the insulation in the attic?
The moisture is there too.
Your windows are actually serving as
a warning sign.
moisture is in your home and you may
need to do something about it.
causes this excess humidity?
Nothing more than daily routines of
your family are putting this
moisture into the air.
Cooking, bathing, laundering,
houseplants, pets, humidifiers, un-
vented gas heaters, even breathing –
all contribute to the moisture level
in your home.
much humidity is too much?
Some humidity is necessary for
comfort and health. With older
houses it was (and still is) a
struggle to keep enough moisture
inside the house. A little fog
on the lower corners of your windows
now and then probably doesn’t bother
you, and it shouldn’t. By the
time you’ve thought about it a
second time it has usually gone
away. But when condensation
covers the entire window and drips
down along the walls ruining paint,
plaster or wallpaper, then there
definitely is a problem.
the excess moisture be eliminated?
There are many steps
that may be made to curb the
Following is a list of most
dryers, gas burners, etc. to the
Check that all
ventilation equipment is
and bathroom exhaust fans.
Air out the
kitchen, bathroom and laundry
room during and after use by
opening a window for a few
attic louvers remain open all
year round and that crawl spaces
are properly ventilated.
local heating and ventilation
contractor to help determine
whether ventilation is adequate
and whether it can be improved.
humidifiers are correctly set
according to the outside
I see condensation near the bottom
of each sash?
Remember that each window sash is
self-contained unit with a sealed
atmosphere. The air in this
atmosphere becomes layered just as
air does in any closed space, i.e.,
and the coldest air settles at the
bottom while the warmest goes to the
top. This means the glass
surface will be cooler near the
bottom of each sash, thus
condensation will first appear on
the cooler surface. The basic
principle of reducing window
condensation is extremely simple.
When there’s too much condensation
on your windows it means that
humidity is too high in your home.
You should take necessary steps to
reduce humidity until condensation