Air Infiltration, Surface Temperature and Condensation Studies on Two Aluminum Windows

This report covers laboratory measurement of temperature, condensation and air infiltration on manufacturer's demonstration samples of an aluminum double double-hung window and an aluminum casement window intended for residential or commercial buildings. The frames of both consisted of two aluminum sections separated by a wood spacer to eliminate continuous metal paths from inside to outside. The sash of the casement window was similarly constructed, but with a hard-board spacer. Special consideration is given to the adequacy of these "thermal breaks" in terms of metal and glass surface temperature.Peer reviewed: NoNRC publication: Ye