Window restoration and repair in the greater Boston area.
The truth about modern windows:
Today's windows rely on delicate springs, cords, and plastic fittings — parts that wear out over time. Springs stretch. Strings break. Plastic cracks. The good news? These issues are usually repairable. Before you replace your windows, let us restore them.

Repairing an antique window in the Back Bay
Services

Repair
Let us repair your existing windows before you spend thousands replacing them.

Restoration
Even the oldest windows can be restored to their original beauty, and in the process, we can also enhance their functionality. Not to menttion, save you money!

Historic Restoration
If you own a historic building, we can preserve its historical significance, ensuring that your building remains true to its heritage.
Modern Windows: More Moving Parts Than You Think
Most newer windows use a system of springs, cords, and plastic components to open and close smoothly. Over the years, those parts can stretch, snap, or crack — but that doesn’t mean your window is done for.
Save your windows (and your budget) — ask us about expert repairs before you replace.
Read about us
Rebuilding a sash
Hear from our customers
“David Liberty is an expert and reliable window restorer. He and his team diagnose and fix problems with old and previously replaced windows without fuss and without unnecessary costs.”
“David and his assistant Joel at JD Window Restoration are absolutely phenomenal. David’s years of experience working with windows shows as he is able to solve any problem. I recently used him for a condo renovation where he made even the oldest windows work perfectly well. Definitely recommend and definitely will use again.”
“I recently hired David and Joel from JD Window Restoration for three older windows in the Back Bay and was overall impressed. One sash needed a complete rebuild, and the quality of the work is outstanding.”
"My windows are so drafty, should I replace them?"
Most of the time, the answer is no. Old windows, when properly maintained and updated can be just as energy efficient as new ones, often for much less money and for a longer time.