What can you do to keep windows from sweating badly and causing mildew?

Question

What can you do to keep windows from sweating badly and causing mildew?

Asked by Jamelle

The sweatimg of my windows only happens in the winnter.

Answer this question

Answers

Scott Grieves, CPM, CEA's picture

Jamelle,

It sounds like your windows are subject to the dew point. Without looking at your home several variables could exist and should be checked by an energy rater or a building analyst.

  • What type of windows do you have? Double pane, low-E SHGC .30 or better would help.
  • Does the home have good insulation? R-38 would help in the attic with an ACH less than 5 on the blower door test.
  • What is the age and condition of the HVAC (AC) system? Check the duct work for leaks.

Mold growing in your home is a big concern. Please have your home checked--- comfort, health, or high energy usage could also be related.

Regards,

Scott

For more information:

Read "Our aluminum-frame windows are harboring condensation and mold. Can you recommend window solutions for a damp environment?" a Q&A answered by Steve Saunders.

The Find A Pro directory on GreenHomeGuide listsapproximately2,500energy auditorsand ratersacross the U.S.Click hereto find one near you.