Dreaming about a new patio door? Wishing you had a bigger window to see your beautiful yard? Let Big L help make your dreams reality. Big L offers excellent financing to make your project come to life. Learn More >>

Visit Big L Windows and Doors at the Buffalo Home and Garden Show March 6th-9th and 13th-15th. You'll be able to learn about all the new products being offered by Marvin Windows and Doors. Visit us!

Come find out how the experts at Big L Windows and Doors can help add curb appeal to your home by replacing your windows and doors. Combining the best quality materials with our experienced staff, Big L is western New York's window replacement leaders. See our Before and After's >>

Come find out how the experts at Big L Windows and Doors can help add curb appeal to your home by replacing your windows and doors. Combining the best quality materials with our experienced staff, Big L is western New York's window replacement leaders. See our Before and After's >>

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.

What Our Customers Say

Testimonials for Big L Windows & Doors

Valued Window and Door Installation Reviews from Our Western New York Family

 

“Big L did a fast, efficient, and amazing job on our windows installation. We are completely satisfied with the job the crew did for us, plus they cleaned up beautifully. I’ll be sure to recommend them to friends and family.”

- Betty...
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News and Events

Therma-Tru 2015 Sweepstakes: “Unlock the Opportunities”

Therma-Tru is launching a national sweepstakes for 2015 called "Unlock the Opportunities." This is open to all builders, remodelers, dealers, contractors and distributors. Grand Prize includes: 2015 TRACKER...
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Marvin Unveils Newest Addition to Scenic Doors Line

January 16, 2015 - WARROAD, Minnesota. Marvin Windows and Doors' line of Scenic Doors have always been known to connect the indoors seamlessly with the outdoors. Now, they have an addition to their Scenic Door...
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