Windows

As distributors of fine custom windows, from renowned manufacturers such as Marvin, Parrett, Sierra Pacific, Western Windows, Arcadia Custom & Reynaers, we provide the Hamptons with quality products, superior service and satisfaction.

Contemporary or traditional, made-to-order, or standard sizes, Water Mill Building Supply has the experience, relationships, size and scale to procure and deliver beautifully crafted windows to the build site. Made-to-order are a specialty, with lead times that rarely exceed custom sizes. Made-to-order also allow full customization to incorporate individual tastes and styles.


Window Styles


Double Hung Windows

Glider Windows

Bow Windows

Tilt Turn Windows

Casement & Awnings

Bay Windows

Round Top Windows

Hopper Windows



Window Finishes


Aluminum Cladding Finish

Paint Finish

Stain Finish



Featured Vendors

  • Marvin
  • Parrett
  • Sierra Pacific
  • Western Windows
  • Arcadia Custom
  • Reynaers

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