*Minimum purchase of 5 windows or doors by Marvin to qualify. $1,500 maximum rebate per household. Mention offer code FIFTYOFF when ordering. Offer expires July 31, 2021.

We’ve expanded our partnership with Marvin, our premier brand for Clad, Wood, Fiberglass and Modern window and door offerings. The Marvin Showroom is now on two floors.

We are pleased to support our customers during this reopening period. For more information on visiting our showroom, picking up products or scheduling installation services, please review our current policies here.

Click here for COVID-19 Updates and Information

THE JB SASH DIFFERENCE

Experience, Customer Service and Flexibility are the hallmarks of JB Sash.
We have been leaders in the window and door business for over 80 years.

Our professional staff is highly knowledgeable and trained to help you find the right products for any project. We offer an extensive range of services including shop drawings, custom carpentry, delivery and installation.
In addition to an onsite manufacturing facility and warehouse, our convenient Chelsea location features a beautiful showroom which is open to the public.

No matter what you’re looking for, JB Sash can either order it or make it
… to your specifications.

For over 80 years, JB Sash & Door has been serving homeowners, contractors and architects throughout New England.

Read a detailed history

It all began in 1940 ...

Joseph Bertolami, John Bertolami and John McAllister found and incorporate JB Sash & Door. Our manufacturing facility moves from Lechmere Square to Central Square in Cambridge.

1950 - 1960

Carmelo, Ugo and Sal Bertolami expand the offerings of JB Sash & Door to include contractors and homeowners.

1970

To promote replacement windows, Sal Bertolami contracts with Red Sox Great Johnny Pesky. Pesky and Bertolami become known as the “Window Boys.”

1975

JB Sash & Door opens an additional location in Somerville to be used as their retail showroom.

1980

Ugo Bertolami is instrumental in developing a vinyl clad replacement window.

1985

JB Sash & Door expands to a showroom and manufacturing facility in Chelsea.

2002

JB Sash & Door creates one of Boston’s first Marvin Windows and Doors showcases in their Chelsea facility.

2012

JB Sash & Door gets a new look. The updated logo and tagline gives a nod to their storied history … Home of the Window Boys.

2015

JB Sash & Door celebrate their 75th anniversary at Fenway Park!

2017

JB Sash & Door undergoes a major renovation and unveils their new showroom and design center.

2018

JB Sash & Door installs an in-house paint booth and ventilation system allowing them to deliver finished products that are “Painted to Perfection”.

2020

JB Sash & Door celebrates 80 years of serving contractors, builders, architects and homeowners throughout New England.