Welcome to Smith Mountain Building Supply

Smith Mountain Building Supply has served the Smith Mountain Lake area since 1986. We have two store locations to serve you, our Westlake Store is located at Westlake Corner on route 122. Our Southlake Store is located on route 40 in Union Hall area. Our store hours of operation are Monday - Friday 7:00 am to 5:00 pm and Saturday 8:00 am to 12 noon.

  • The Infinity Difference
  • Our Products
  • Hassle-Free Experience

The Infinity Difference

Infinity® replacement windows and doors are made from Ultrex fiberglass material so strong and durable it is superior to other window materials. Best of all, it makes Infinity products virtually maintenance free.

Advantages of Ultrex® Fiberglass

Strong, stable, durable and virtually indestructible, Ultrex is possibly the perfect material, creating windows and doors that leave other materials in the dust.

  • Patented mechanically bonded acrylic cap, virtually indestructible surface.
  • 8x stronger than vinyl, 3.5x stronger than wood.
  • 500x less thermal conductivity than aluminum.
  • Low thermal expansion (essentially the same as glass) for better seals, longer life.
  • Strength allows for narrow better looking profiles and more visible glass area.
Schedule your FREE in-home consultation from a local expert today!
(540) 721-3453 Request Consultation Now

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Smith Mountain Building Supply
13080 Booker T Washington Highway
Hardy, VA 24101
© 2015 Marvin Windows and Doors