Historic Replacement

We don’t just make windows. We recreate history.

Recreating History Across New England

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.

Based in History, Built for the Future

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.

Proper Bostonian Seal

Locally Manufactured in Massachusetts

We craft all of our JB Proper Bostonian replacement windows in Chelsea, MA for true New England authenticity. 

Our Turnkey Solution

We offer a complete turnkey solution to meet your historic window replacement needs.

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FREE on-site measurements and estimate.

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Thorough photography, drawings, and application for Boston Landmark Commission approval.

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Complete permit application and approval service.

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Full design, construction, painting, delivery, and installation

what our customers are saying

Window Features:

  • Custom-made in pine, red grandis, or mahogany to fit any opening 
  • True divided lights with insulated glass that reduces sound and increases energy efficiency 
  • No visible jamb liner from exterior to maintain historic appearance 
  • Upgraded functionality with tilt wash for easy cleaning 
  • Muntin bars available in the size required to meet your specs 
  • Available in bowed or radius top styles 

Meet Our Replacement Solutions Team

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. 

Replacement Specialist

Gary Troy

Installation Sales

Marilyn Garrett

Installation Coordinator

Heidi Beaudoin

Replacement Specialist

Andrew Clark

From Our Inspiration Center

Hampshire House Boston, MA

Hampshire House: Historic Window Replacement Project

The Hampshire House is a cornerstone of Boston’s rich architectural history, and has housed the famous Bull & Finch Pub, inspiration for the iconic Cheers bar, for decades. When this century-old Beacon Hill building needed historically accurate replacement windows on the third and fourth floors, Thomas A. Kershaw, Chairman of the Hampshire House Corporation, reached out to JB Sash & Door due to their experience working with The Architectural District Commissions of Boston.

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