Replacement Windows

At Big L Windows and Doors we offer a complete selection of replacement windows, styles and price points to meet your needs whether you are a homeowner, do-it-yourselfer, architect or contractor. Our various replacement windows give you the opportunity to enhance the beauty of your home, while increasing the warmth and value for years to come. Big L Windows and Doors supplies a variety of brands to ensure we can complement your vision whether you are replacing your old windows, remodeling your home or building a new home.

Infinity from Marvin Windows and Doors

Big L Windows proudly features Infinity® from Marvin Windows and Doors from Marvin Windows and Doors. These fiberglass, low-maintenance, and energy efficient windows are the perfect fit for your home with the tough upstate New York winter weather in mind.  Big L Windows is the expert in Infinity Windows for Buffalo, Tonawanda, Cheektowaga, Williamsville, Orchard Park, and the Niagara Falls area.

Learn more about Infinity® from Marvin Windows and Doors


Restorations Innovative Window Systems

Restorations Innovative Window Systems are proudly featured by Big L Windows and Doors, upstate New York’s window expert. Made with PVC Fiberglass and a material called FiberCore – Restorations Windows are tough, durable, and perfect for your home.  Big L also offers professional installation to the greater Buffalo area, as well as Lancaster, Hamburg, and Bowmansville.

Learn more about Restorations Innovative Window Systems

Marvin Logo

Big L Windows and Doors are partnered with Marvin® Signature, an industry leader in product innovation, energy efficiency and progressive manufacturing techniques for windows and doors. Our staff is specifically trained with Marvin expertise in mind, with not only their windows and doors, but installation of Marvin products.  We serve the greater Buffalo area, Tonawanda, Hamburg, Lancaster, Getzville, Niagara Falls, and West Seneca.

Learn more about Marvin® Signature

Marvin Logo

Marvin Elevate, formerly known as Integrity is made with Ultrex® pultruded fiberglass, a material patented nearly 20 years ago when Integrity pioneered the fiberglass windows and door category. Big L Windows and Doors is not only upstate New York’s Marvin leader, but Integrity as well, serving not only Buffalo, but North Tonawanda, Jamestown, Depew, Lockport and East Aurora.

Learn more about Marvin Elevate