We believe in historical character and truly value maintaining the period style of your home. At Viridian Window Restoration, we restore the older windows in your home while preserving the original sashes. We use the Bi-Glass System that replaces single pane glass with high-quality insulated glass units; this allows us to retain your historic sashes, including those with divided lights! Reusing your old sashes saves money and maintains the architectural integrity of your older home or commercial property.