Mozer Works, Inc. is dedicated to providing high-quality artisanship and customer service in restoring olde windows and entrance doors. Incorporated in 2000, we have proudly restored thousands of windows and hundreds of entrance doors for residential homes, commercial historic buildings, historic preservation organizations, museums, country and state government entities, religious groups, and general contractors. We work throughout the DC/MD/VA metropolitan area and beyond responding to historic restoration needs rather than limiting our operations based on geography.

Our business has expanded as more and more people have discovered the beauty, viability, financial benefits, simplicity, functionality, and efficiency of our professionally restored olde windows and entrance doors. Our 4,500 square-foot custom-built shop in Silver Spring, MD is open to the public and our clients to experience first-hand our quality-driven restoration process. Here one can readily see the artisanal character of our work where curative attention and highly skilled artisanship combine to resurrect the natural beauty of these antiquities.

The pleasure in our work stems from this process which uncovers historic elegance but also allows us to contribute to it. We are expert technicians, classical glaziers, professional painters, and masters of America's original, historic, hard-metal weather-strip systems for olde windows and olde entrance doors.

Mozer Works, Inc. is EPA-registered and certified to conduct lead-safe practices for historic restoration and we proudly uphold the U.S. Department of the Interior’s National Park Service standards for conservation, restoration, and preservation.

From Colonial-era to mid-20th century, we’re committed to restoring olde windows and entrance doors and saving America’s architectural heritage, not just locally, but nationally. We’re proud members of the Window Preservation Alliance, a nationwide trade organization committed to saving and repairing olde windows. This national alliance seeks to change the conversation about olde windows to highlight the benefits of preservation and to share best practices with professionals and historic building owners across the country. Whether it’s just “two olde windows” from a historic house or an entire museum’s worth of sashes to save, we’re here to help.