Viridian Window Restoration LLC

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. 

Viridian Window Restoration brings the Bi-Glass System to the West Coast!

With over 25 years of successful historic restoration work on the East Coast, the patented Bi-Glass System® is now available in the Pacific Northwest! The Bi-Glass System® will replace single pane glass with high-quality insulated glass units while still retaining your old sash, including divided lights! Reusing your old sash saves money and maintains the architectural integrity of your house or commercial property. After adding new weather-stripping and hardware (or keeping your old hardware if it's in good shape), you will have a truly energy-efficient window unit that will keep you warm in the winter and cool in the summer.