Can I butt-glaze an insulating glass unit that spans from the floor to the ceiling?
For clarification purposes, a true butt-glazed application is defined as the installation of glass products where the vertical glass edges are without structural supporting mullions. In general, insulating glass units should not be used for butt-glazed (or unsupported edge) applications. In order to prevent premature insulating glass seal failure, Viracon requires that the edges of insulating glass be supported so that edge deflection does not exceed the span divided by 175 (L/175). For more information or additional questions related to this topic please contact a Viracon Technical Services Representative at 800-533-2080.
