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slushi

08:48AM | 01/02/04
Member Since: 12/29/03
4 lifetime posts
Bvwindows
Hi:
I have a 1.5yrs home and I have a humidifier installed. The humidity level of the house is normally below 40% (Range of 35-40%).

I am getting lots of condensation on ALL of my bedroom windows on the second floor. We have exaust fans in all bathroom and they are always used when someone is taking shower so steam leaking into the boodroom is min.

Can someone guide me on some of the steps I can take to minimize this buildup. Most of the time I need to use a towel to wipe the water off the window bed. It also freezes when its very cold and i need to pry the ice off the inside of the window.

I am in Ottawa, Ontario.

CHEERS
Slushi

Piffin

03:48PM | 01/03/04
Member Since: 11/06/02
1281 lifetime posts
People are very comfortable at 40% humidity. Dust mites and molds get pretty comfortable at 30% - 60 % RH. Wood houses are more comfortable at 15% - 20%
Can you strike a compromise?. As long as the RH is that high, you will see condensation on the coolest surfaces in the house.

slushi

07:28AM | 01/04/04
Member Since: 12/29/03
4 lifetime posts
First of all thanks for the response.
I turned my humidifier off for last 24 hours and wiped clean all the windows. The meter shows that the house is at about 35% RH and i have not seen any condensation on the windows.

So it does makes sense that my humidifier was spitting more humidity then the house needed and I was getting condensation. I had the humidifier set to 35%.

From what i understand from your reply is that if I can manage with RH 20% I am good. Is that correct?

our house is not all wood. Front is brick, all else is 2X4 with drywalls.

Cheers

BV002804

08:29AM | 12/16/13
If you have blinds or curtains pulled, the air in the room won't circulate and condensation -- even ice -- will form. This will happen no matter what brand of windows you have. Showering and cooking while not running external exhaust fans can exacerbate the problem. Also, condensation can happen more frequently in bedrooms if you sleep with doors closed, since you exhale water vapor when you breathe.

Andersen Windows has a really great video that helps explain condensation, why it happens, and how to prevent it (I am not employed by Andersen, nor sell their products). http://help.andersenwindows.com/system/selfservice.controller?CONFIGURATION=1000&PARTITION_ID=1&TIMEZONE_OFFSET=&CMD=VIEW_ARTICLE&ARTICLE_ID=2586

Here's the take-away from the video:

"Condensation doesn't mean there's a problem with your windows. In fact, the presence of condensation could actually be a sign that your windows have good, tight seals. Everything that makes homes more energy efficient also locks moisture inside your house and increases the chances of condensation forming."
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