Servicing the Iowa City area since 1980

We like to say that "Knebel Knows Windows" ... and doors, three season porches, and glass and mirrors! Our seasoned team has nearly three decades of experience providing quality service and professional installation on a wide variety of projects. We invite you to browse our website and learn more about our many products or stop by our showroom and see what else is available.

Great work, great people, great products.
Guy Rosenberg
I love my new room! Your people were very nice to me and a pleasure to work with. Thank you.”
Marcia Nagle
Thanks for the great work. The men who did the work were great as well.
Jim Worrell

Take a Look at Our Previous Work

Let us prove to you that we are the best in the business!