An effective and durable window installation demands good airtightness and proper water management. This Update explains how the degree of airtightness and the location of the plane of airtightness of the wall-window interface affect water entry. It is the second in a series of Updates presenting results from studies of window installation details. Full story
This Update describes results of research on several types of window shading devices and their potential to reduce heating and cooling energy consumption and improve conditions that affect occupant comfort. The information provides guidance in the selection of shading devices for particular housing types and energy cost situations. Full story
Satisfactory window performance demands a good product and proper installation. This Update presents results from a recent study of sill installation details for the effective drainage of inadvertent water entry at the wall-window interface. Full story
This Update discusses the results of a research project that examined the impacts of two types of high-performance window glazing (low solar heat gain and high solar heat gain) on energy consumption in residential applications. Full story
Insulating glass units that employ metal spacer bars are more susceptible to heat loss and condensation, both of which are detrimental to window performance. This Update reports results of research conducted on state-of-the-art spacer bars that can help improve performance. Full story
Muntin bars have become popular as a decorative element in insulating glass units. This Update discusses some performance issues encountered with the use of muntin bars, which can actually undermine the quest for aesthetics. Full story
Building owners and designers have been limited in the extent to which they can use glazing in fire-rated separations. This Update presents the results of IRC research on the use of dedicated sprinkler systems to protect glazing in fires and provides guidelines that will ensure effective protection in different situations. Full story
When a heritage building is adapted for a new use, changes to the indoor environment can lead to condensation problems. This Update describes an evaluation of selected windows undertaken by IRC researchers at Ottawa’s Laurier House (now being used as a museum) to determine their effectiveness in controlling condensation. Full story
