Converting single glazed windows to insulated glass will reduce the heat exchange during the winter and summer months from 60% to 85%. The degree of effectiveness is dependant on the type of glass used, the utilization of argon gas, and the use of sun reflecting film, or Low ”E” coatings.

This existing market of high rise buildings represents specific challenges to the building owners and its administrators. These buildings are often fully occupied by tenants. The replacement of existing glass or windows using traditional methods is extremely expensive and is also significantly disturbing to the tenants’ business operations. In many instances, it is physically impossible to conduct effective window replacement due to the particular construction of the outside curtain walls, or due the nature of the tenant’s operations, without severely displacing the whole normal operation.