Care you can count on from your neighborhood window and door experts.
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.
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 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.
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
See how Marvin windows and doors shape this North Shore MA home renovation by Phoenix Architects, bringing in natural light, views and outdoor connection.
Discover why fiberglass windows offer exceptional strength and stability, making them ideal for high-performance applications.
