The Little Man Business, with Big Customer Service!



Building or Remodeling??

Shop first at your local Building Center!

Roundup Building Center provides personalized service for your construction and remodeling needs at all budget levels not found in "Big Box" stores.





About Us

We share your passion for building. And we welcome the opportunity to know and serve you better.

Bayer Built Doors

Bayer Built Doors

Bayer Built’s Acclimated Entry Systems surround your choice of a beautiful wood, fiberglass or steel door with a “climate enhanced” frame and sill system. View Bayer products


Therma-Tru Products

Discover the possibilities for your home. Therma-Tru’s superior engineering results in high quality products with enduring beauty. Browse full line of entry and patio door systems.

Thermatru Doors

Larson Storm Doors

Larson Storm Doors

Larson revolutionized the storm door market when we invented the ScreenAway™ retractable screen and balanced window system. With just one hand, the screen discreetly disappears into a hidden cassette at the top of the door. View more products...

Copper Creek Hardware

All Copper Creek Locksets are uniquely engineered and designed with “Convenience” & “Value” in mind for today’s building industry specialist.

North Central Door

North Central Door provides high impact garage door solutions and garage door opener ideas for your home or work place. We work specifically with you and our specialty doors to create an engaging home environment or work space to help maximize visibility and give your home curb appeal.