Tri-State Insulation

Keith Joy

Sales Representative
1003 Valley View Drive
Vermillion, SD 57069

Offices in Miller and Vermillion, SD
(800)658-3531 or (605)624-6405


We install custom built vinyl and wood replacement windows in a variety of colors and styles. Specializing in triple glazed units. Most of our windows have a lifetime glass breakage warranty.

Our windows qualify for a 30% federal tax credit.

We use windows from the following vendors:

Alside Windows

Richlin Windows

Heartland Windows


Since 1939, we are a third generation family business serving South Dakota and surrounding areas.
"We explain - You decide."