Big L is celebrating 40 years of providing Western New York with the best window and door products available, and matching it with unbeatable quality service. See the video>>

Hassle-Free Financing Options

We make it easy to realize your dreams today! Big L offers a variety of great financing options including "same as cash" financing with no interest and no payments for one year.

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Proud Guild Quality Member

See what the Guild Quality Community is saying about Big L Windows and Doors.

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Welcome to Big L Windows & Doors

The Best in Windows and Doors for Buffalo and Western New York

If It’s a Window or Door, Our People Know More

Welcome to Big L Windows & Doors, your first choice for high quality Windows and Doors. Our extensive selection of cutting edge products deliver unmatched beauty and state-of-the-art performance for energy savings, reduced maintenance and a more comfortable home.

Big L Windows & Doors delivers a wide array of custom-made styles, decorative options, complementary trim selections and performance packages for a fully customizable solution to suit your individual needs.

At Big L Windows & Doors, we have a reputation for making a Big difference – a Big difference in sales, service, installation, and products.

Big L’s professional approach, highly trained staff, and affordable pricing will help take the stress and confusion out of your new project.

 

Customer Reviews

What our customers say
Don B. in Amherst, NY
It is really frustrating how long it takes between the time you order and the time it is installed. If it can be decreased it...


View all feedback from Big L Windows & Doors

News and Events

20 Inviting Home Exterior Color Palettes

From classic to bold, showcase your style outside your home with inspiration from these exterior paint color schemes that offer serious curb appeal — and beckon visitors inside. Mustard Yellow + Brown +...
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Marvin Announces Sponsorship of PBS Show “This Old House”

Marvin Windows and Doors, a premier manufacturer of made-to-order wood and clad-wood windows and doors, announces it is now a proud sponsor of the award-winning television show "This Old House" currently in its...
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