Thermal Sash Inserts
Converting single pane into double pane insulated glass
We specialize in transforming inefficient single-pane windows into high-performance insulated double-pane units—without the need for full window replacement. Our Thermal Sash Insert (TSI) system is a cost-effective, energy-saving solution that enhances comfort, reduces energy bills, and preserves the original frames of your home or building. It’s a smart upgrade with lasting impact.
Do you live in a condominium or are you a property manager?
No more single pane glass
After a few years of hearing complaints about frozen window glass or extremely cold air drafts we created a solution to solve the problem. We have implemented a dual pane sash insert that fits right into the existing window frame with results equivalent to full window replacement.
