Do drapes and window shades cause window condensation?

Drapes and other window coverings don't cause window condensation, but they can contribute to the problem by restricting the flow of warm room air over the glass surface. Therefore, condensation is more apt to occur when drapes are closed and shades are pulled down. Today's heavily insulated drapes and tighter shades can contribute to the problem even more. Remember...Windows Do Not Cause Condensation: therefore, there cannot be a window which will eliminate condensation. However, certain materials used in the manufacture of windows will be more condensation free than others. THE FOLLOWING SOURCES WERE USED: The Condensation Problem - HERE ARE THE CAUSES AND CURES.Canadian builder. Vol.XIII. No. 7. Condensation Problems In Your House: Prevention and Solution. U.S. Department of Agriculture Forest Service, Agriculture Information Bulletin No. 373. Technical Bulletin #1. Ethyl Coorporation The Condensation Answer Book. Andersen Reproduced by permission by Great Lakes Windows P. O.  more