Your windows are the eyes of your building. Windows aren't just about aesthetics, but about safety and convenience. For this reason, it's essential that when you're installing new construction windows, you choose a product that will last and perform well for years.

If you install the wrong type of windows during your construction project, you're putting more money into that project than you should. Those windows will need replacing far sooner than if you'd gotten the right ones from the beginning. Our window company is known in Saint John, New Brunswick, for our supply of high-quality windows for all types of construction projects.

To help you minimize expenses, we recommend the best type of windows, so you get it right the first time. First, we talk to you so we can understand what kind of building you are constructing and the purpose of each room in the building.

This information helps us recommend and install windows that deliver optimal lighting, security, and ventilation where you need it.

No matter what type of new construction windows we install for you, you have our guarantee that they'll deliver the best insulation and energy-efficiency. We use cutting-edge double-glazed and triple-glazed windows in our installations to give you maximum performance every time.

Our glazed windows optimize insulation, minimizing the energy you need to keep your building warm in winter and cool in summer. They prevent drafts and keep the room secure so that you can save money on energy costs.

On sunny days, our glazed windows reduce the level of harsh UV rays allowed inside. This technology not only protects your skin and health, but your furniture, floors, and carpeting from fading in the sun.

Our new construction windows are available in a wide variety of styles and colors for you to choose from. Whichever you select, we guarantee installation will be quick and convenient for you.
More importantly, our high-quality window products don't compromise on affordability. When you want the best windows without breaking your budget, we're the Saint John window company you want.

Our years of experience covers a wide range of construction projects, including commercial and residential areas. We know what window types will make a perfect fit for your project, and we're more than happy to share our knowledge with you.

Call us today to tell us about your construction project and get a quote!

About Mitten Building Products in Canada


Mitten Building Products is a coast-to-coast distribution business and market leader in home exterior products. Headquartered in Brantford, ON, Mitten also has locations and satellite offices in nine separate provinces across the country to serve you better. Please visit for more information.

To find out more information about our siding and other products, you can visit one of our branch locations. The branch nearest you is:


Mitten Building Products – St. John
855 Bayside Dr. 
Saint John, NB  E2R 1A3 
P:  506.634.0034 
F:  866.526.5840 

A complete list of branch locations can be found here If you have any questions or comments, feel free to call 1-866-MITTEN and you will be automatically directed to the branch closest to you.