There are many material choices, manufacturers and stylistic options to choose from. With all this choices comes a new language to master. We have highlighted some of the most common terms so you can better understand the attributes and options available.

100% Virgin Vinyl - means that no recycled material is contained in the vinyl. As a result, windows maintain their color and shape over an extended lifetime.

“Constant Force” Balance System - (consisting of a coiled steel band) is the most prevalent in the replacement window industry, but there are several high-end manufacturers that utilize a revised block and tackle style system as well. Be wary of windows that use spiral balances

Double strength glass - increases the strength, efficiency and noise cancellation of the window. Each of the two panes of glass should be 1/8 inch thick on double strength glass.

Fusion welding - creates a seamless frame/sash and totally eliminates any weak points or attachment screws.

Interlocking rails - run the full width of the window to help mitigate air infiltration and increase the overall break-in security of the window.

Lifetime and transferable warranty - covers any and all components of the window (frame, sash, and glass) and should be included with your window purchase.

Low conductivity glazing spacers - increase glass and overall window performance. Some examples include: Low Intercept, Silicone Foam, Thermo-Plastic and EPDM Rubber.

Weather stripping - along moving joints will help reduce air infiltration and improve window performance. Be wary of superfluous weather stripping and extra “weather seals,” as they can be indicative of a poorly designed window trying to overcome performance shortcomings.