Cooper O’Neil Stained Glass is a Philadelphia based stained glass studio that has experience in a wide range of stained glass repair and restoration. We’re proud to have been a part of award winning restoration projects, recognized by The Preservation Alliance of Philadelphia in 2024. We work with clients ranging from education institutions to churches to individual residences. If your leaded glass or stained glass windows are bowing, leaking, or breaking we can work to preserve and repair them back to fully weatherproof and sound.

Here’s a few recent project highlights:

Stained and Leaded Glass windows are resilient, lasting far longer than contemporary windows that have plastic or rubber components. The main maintenance need is the “100 year” re-leading. Around 100 years old the lead-work that holds these windows together will begin to fail. Signs that your windows may be at this point include “bowing/bending” of the panels, loose glass, visibly broken glass, water leaks, or small cracks in the lead-work at the joints. We are able to stop the damage and preserve your antique glass for the next century through our restoration process.

If you think your windows need work, fill out the form below and we’ll get back to you ASAP! Our skilled craftspeople are able to assess aging or damaged windows and outline maintenance and repair options clearly and concisely so that you know the best options to maintain your stained glass.

We’re happy to come take a look and give you a free condition report and estimate for your repair work.

More examples of past projects include:

The Unitarian Society of Germantown, Philadelphia, PA:

Full Restoration of original Heaton, Butler, and Bayne windows, circa 1890

The Alumni Chapel, The Hill School, Pottstown, PA

Historic restoration of chapel windows

Memorial Room, Hill School Library, Pottstown, PA

Full restoration of original Connick and Associates Windows

First Presbyterian Church of Bridgeport, PA:

Full restoration of original front facade windows, circa 1900