We don’t just make windows. We recreate history.
JB Sash and Door has been preserving the historic beauty of Greater Boston for almost a century. Born as a custom millwork shop, JB Sash has recreated thousands of the unique windows and doors that embody our iconic local architecture. Our JB Proper Bostonian replacement windows can be found in every corner of the city.
The Architectural District Commissions of Boston have high standards when it comes to authenticity of window replacement throughout the city. Our artisans are experts at recreating and replacing historic windows, and understand the nuances and necessities of getting designs approved.
We construct windows that honor the beauty of the past while implementing features built for the future. All JB Proper Bostonian windows incorporate the latest technology in energy efficiency.
We craft all of our JB Proper Bostonian replacement windows in Chelsea, MA for true New England authenticity.
We offer a complete turnkey solution to meet your historic window replacement needs.
FREE on-site measurements and estimate.
Thorough photography, drawings, and application for Boston Landmark Commission approval.
Complete permit application and approval service.
Full design, construction, painting, delivery, and installation
Our installation team is very responsive, and takes the time to understand customers’ needs and concerns. They will help you understand the process every step of the way, ensuring nothing feels overwhelming. They help transform your space and bring your vision to life.
Marvin Windows and Doors have the power to transform a room; nowhere is that more evident than at JB Sash & Door’s brand new Marvin Window