Holiday Sale windows and doors 2

Tax-Free Weekend

Save over 6% on your project on Aug 12th.

Plan Now to Save Later.

Upgrade your home and take advantage of Massachusetts state tax-free weekend on August 12th by pre-selecting your windows and doors now and beating the rush later.



Window installer image with CIR badge


Your worry-free window & door replacement journey starts here!

marvin window installer

JB Sash is proud to be your local Marvin Certified Installing Retailer.

We partner with Marvin because of their performance, durability, and beauty. Our Marvin certification speaks to our experience, expertise, and dedication to exceptional service.

Perfecting Our Process for 82 Years

We have served thousands of customers since we opened up shop 82 years ago.
Our process is designed with ease and convenience in mind.


Free- in home consultation

During an in-home consultation, our replacement expert will evaluate and measure your windows and doors, answer questions, talk through installation options and provide you with a free quote.


Installation Services

Installation is an easy and hassle-free experience. Our dedicated team handles it all for you, and makes sure you’re satisfied.


Product Selection

Let us help you decide between wood, aluminum-clad, and fiberglass window and doors.



All of our products are backed by manufacturer warranty, giving you peace of mind that your investment is protected.

Limited Lifetime Guarantee
+2 Years Install Warranty

We proudly offer a Limited Lifetime Warranty to our customers on all of our replacement windows and doors. As a locally-owned business, we believe in providing our customers with the best possible service. We believe that a decision like replacing your windows, should only be made once. Plus, we offer a two-year service installation warranty for additional peace of mind.

Sales Tax Promotion FAQs

JB Sash is extending its hours on Saturday, August 12th from 7:30am to 1pm.

Yes. The sales tax holiday exemption is limited to eligible sales of items costing $2,500 or less.

If you spend more than $2,500 on an item, the entire amount paid for the item is subject to sales tax, not just the amount that exceeds that threshold.

If the price of each individual item is $2,500 or less, you can combine as many items as you want, tax-free, even if the combined items cost more than $2,500.

No, during the sales tax holiday, only eligible products that are intended for personal use by individuals qualify for the exemption. Therefore, it is not allowed for businesses to make purchases on your behalf during this period. The payment for the final purchase must be made in full and under your name.

To qualify for tax exemption during the sales tax holiday, eligible purchases must be fully paid for during the event.

Installation and labor services are always tax-free!

No we only require 1/3 down payment and remainder due prior to installation.

Yes, currently, we have a special offer available to customers who opt to have Marvin replacement windows installed by JB Sash. Saving you up to $1500 off your installation service now thru August 12th.

*All product purchased must be paid in full to receive tax-free status. The remainder installation balance will be due prior to installation.
*Tax-Free is good for individual products valued at $2,500.00 or less and for personal use only.
*All original prices quoted beyond the valid 30 day period will be subject to change due to increase in building material cost. 
**Save $50 off the installation of each Marvin window or door. Minimum purchase of five windows or doors by Marvin to qualify. $1,500 maximum discount per household. Mention offer code FIFTYOFF when ordering. Offer expires on 8/12/23.

From Our Inspiration Center

Replace window this winter

Winter Window Replacement: Can you replace windows in the winter?

Winter is coming, and you still haven’t taken the steps to set up an appointment to learn more about replacing your windows. Unfortunately, it is typically this time of year when regret sets in for Massachusetts homeowners planning to replace their windows during the warmer season but missed the window of opportunity. And now find themselves in yet another battle between energy savings and comfort. We get it; regret can be uncomfortable, but what if we told you that it’s not too late for a winter window replacement!

Read More