HISTORIC WINDOWS

The JB Proper Bostonian Historical Replacement Window is approved by historical commissions throughout Boston neighborhoods and surrounding towns.

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Providing a turn-key solution, JB Sash & Door makes the replacement of historical windows a seamless process for both the homeowner and contractor.

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JB Sash has installed The Proper Bostonian Replacement Window in some of the most prominent historical residences and commercial buildings in Boston and nearing towns.

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JB Sash will replace historic windows while keeping the integrity of the historic architecture.

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With the JB Proper Bostonian, we don’t just make windows. We recreate history.

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JB Sash will work seamlessly with private contractors to ensure that the replacement of historic windows is a success.

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Upgrade the performance of your windows without sacrificing the architectural detail.

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Each historical replacement window is custom-made and provides the latest technology in energy efficiency.

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Historically correct replacement windows and doors dramatically improve curb appeal.

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JB Proper Bostonian historic replacement windows are manufactured locally with over 75 years of experience.

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There are few companies in the United States that know how to design and build historically accurate windows. JB Sash happens to be such a company. The JB Proper Bostonian line of replacement windows is approved by the Boston Historical Commission (among others). JB Sash is the industry leader in designing, building, installing and painting these beautiful works of art.