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Cite this document
There was a time when the term “window” meant an opening in a wall for the admittion of air or light or both, and commonly fitted with a frame containing panes of glass. The simple construction once used by pioneering individuals in making and installing windows would be most inadequate today to meet the demands of speed and economy of the changing modern age. Today large industries have evolved for the manufacture of windows and assemblages from many materials, such as wood, steel, aluminum, reinforced plastics, and others. The efficiency of the assemblages also may be complicated by the performance of the individual parts such as adhesives or caulking materials, fasteners of many kinds, and sealing components of rubber or plastics. The newer development of architectural and engineering designs for buildings and housing have had a profound influence on the requirements of windows for efficient performance. Generally the accepted criteria for good performance require the window assemblage to be adequately structurally strong, to possess adequate resistance to rain penetration and to air infiltration. A good thermal performance is also desirable.
Crepps, Ray B.
chairman of Symposium Committee, Purdue University, West Lafayette, Ind.