What type of spacing system is used in the insulating glass?
A. Windows are 90% glass and this is what gives you the most of your thermal efficiency in your window. There are many glass options and spacing systems that are used in insulating glass. Most windows are made with an aluminum or some type of metal spacer which conducts cold. Aluminum and steel transfer heat and cold very readily through glass. Your better off with material that provides you with a warm edge type spacing system, where the glass is touching material that does not allow the transfer of this heat and cold. Swiggle strip is one such spacing system. This is a continuous spacer that is warmedged and provides superior insulated glass and extended life against seal failure. Low E and argon gas are also options to discuss with your contractor. These products increase the R value of the glass and reduces fading of drapery and furniture.
