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Expert Replacement Window Installers in Gaithersburg, MD

Replacement windows for smart homeowners in Gaithersburg, MD

Long Siding

Do you need new windows for your home in Gaithersburg, Maryland? If so, choose Long Windows®.

Long Windows® is your exclusive provider of Quantum2 Heat Mirror® windows for the Washington, D.C. region. The Quantum2 Heat Mirror window was scientifically developed with lightweight, suspended film technology to block 99.7 percent of UV light, reduce outside noise and insulates with the same strength as a wall!

Quantum2 Heat Mirror windows are quieter than double-pane glass, reduce window condensation and maximize natural light. That’s a level of performance above and beyond the typical triple-pane window.

Think those replacement windows would work well in your Gaithersburg, MD home? We do, too.

Window replacement benefits

In addition to all of this, you’ll have a wide variety of aesthetic options to choose from when you select Long Windows for your home. Our windows are available in a number of different interior and exterior colors and wood grain finishes.

You can also choose from a range of style options, such as double hung, casement, awning, picture, bay, bow, and many more.

Contact us today for more information. We’ll be happy to schedule your free, in-home consultation.

Long Roofing
Long Fence and Home
10236 Southard Drive
Beltsville, Maryland 20705

*On initial visit only. Minimum purchase required. For windows, three or more windows required. Cannot be combined with other offers. Prior sales excluded. Some exclusions may apply. Offer expires 2/2/2020.