Condensation occurs naturally when warm air drops in temperature due to contact with the cooler surfaces of windows or doors, resulting in the formation of water droplets. This surface condensation is an indication of excessive humidity in the air.

Older windows and doors allow air to infiltrate through and around them which, in effect, reduces humidity levels in the home (often resulting in the need for a humidifier). New energy efficient window systems are airtight. When properly installed drafts are alleviated, however, condensation may at times become an issue.

High humidity levels or excessive moisture in the home can be the result of a number of household activities; cooking, dish and clothes washing, bathing and floor mopping. Although there is little or nothing that can be done with the windows themselves to cut down on surface condensation there are steps you can take to control humidity levels.

Turn on exhaust fans when cooking and bathing. Make sure they vent outside. If there are no fans, close the door and open a window briefly, until the room clears.
Make sure when drapes are closed they do not fit tight to the window or floor.
Air should be able to circulate under and around the curtains to prevent build up of cold behind closed drapes.
Open a window for 1/2 hour per day to reduce the relative humidity to below 40%.
Remove plants from window ledges and bay or bow window seats.

Ph. 519.842.8558

Fax 519.688.3793

 P.O Box 351,Tillsonburg

 Ont. N4G 4H8