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GENERAL GUIDELINES FOR THE INSTALLATION OF STEEL WINDOWS THE OPENING Before installing a steel window, the installer must measure the opening for width and height and compare the dimensions of the opening to those of the window to make sure that a gap exists all around between the window and the opening. The opening should be measured at the top and bottom for the width measurement, and at both sides for the height measurement. This gap allows for construction tolerances, window fabrication tolerances, out of square variations in the opening, and thermal movement of the window. In general, a Ñ" design gap between the window and the opening all around is typical; however this gap should not be smaller than 1/8" and not greater than ý". In retrofit installations where multiple windows of the same size are being installed, the openings may be slightly different sizes and therefore the gaps will vary. Check the opening for squareness and adjust as necessary. Fire rated window installations require the opening to be either made of non-combustible material, or protected with steel cladding. Remove any objects that may obstruct the window from freely sliding into the opening. © The Steel Window Institute (2006) Contents are the property of the Steel Window Institute, its members or others who have licensed the information. All rights reserved. |
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