What is Insulated Glass Unit (IGU) in commercial building application?
Insulating glass units (IGU) used in commercial building applications are generally composed of two or more lites of glass held apart by a spacer material and hermetically sealed around the unit perimeter using a polyisobutylene (PIB) primary seal and a silicone secondary seal. This unit construction is capable of withstanding or absorbing stresses originating from pressure or thermal expansion and provides a stable barrier that works to prevent moisture/condensation from infiltrating the unit and the escape of any specialty gas fill from the unit.