Homeowner Services

Care you can count on from your neighborhood window and door experts.

World-Class Quality, Right Down the Road

At JB Sash, we treat all of our customers with the care and attention we would give our own neighbors. We were born as a custom millshop in Cambridge, and we’ve stayed true to our Massachusetts roots every day since. We take pride in maintaining the beauty of windows and doors all around New England, because this is our home too. 

Contact us today to feel the JB Sash difference for yourself. 

It all Starts Here​​

Our design center and Marvin showroom minutes from downtown Boston brings new meaning to the term “window shopping.” 

Experience the JB difference for yourself when you see, feel, and compare our extensive selection with the guidance of our window and door experts.

Open to the public: 7:30am – 4:30pm

Replacement Solutions

Replacement windows and doors from JB Sash can improve and preserve your home or business, save you money, and make your space more comfortable and secure. Upgrade your space today with JB Sash & Door.

Replacing windows in an historic district?

We have been designing, building, painting, and installing historically accurate windows in Boston and the surrounding area for more than 80 years.

Our custom historic reproductions match existing windows and fit any brick or wood opening. We work to secure any necessary permits and help ensure your project is granted historic approval

Custom Shop Services

From custom millwork to our state-of the art paint shop, JB Sash has over 80 years experience as experts in custom window and door solutions.

From Our Inspiration Center

Reimagined Historic Victorian

Reimagined Historic Victorian

In 2019, architect Sam Kachmar and his wife purchased a dilapidated Victorian home in Cambridge, Massachusetts, complete with broken windows and asbestos shingles, with plans for renovation. But, after they moved into the nearly 150-year-old residence, the couple realized updating the existing structure to 21st-century standards would be a bigger challenge than they’d anticipated.

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