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.

Diamond Kote Siding


Wausau Siding Systems is an integrated system that provides you with a variety of choices and styles to create your dream home.


James Hardie Siding

James Hardie Siding

We've created a range of innovative products resistant to flame, impact, moisture and more. The products we manufacture are technologically superior to anything our competitors offer, and we back that up with our warranty.

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LP Smartside Trim and Siding


LP® SmartSide® products deliver all the warmth and beauty of traditional wood, plus the durability and workability of engineered wood. Our SmartGuard® manufacturing process actually improves upon nature, creating products that are engineered for strength, performance and protection against fungal decay and termites. The LP SmartSide family features four distinct product collections, all backed by an industry-leading 5/50 Year Transferable Limited Warranty.



Today’s toughest siding withstands the elements without compromising great looks. With fluctuating temperatures, snow, rain, wind and hail, a home’s exterior needs uncompromising strength. Rollex steel siding is the most durable siding product on the market; offering an oven-fused PVC finish that protects against dents and scratches, tighter seams and a more rigid make-up that stays true to form without buckling or warping, and our non-fade colors for lasting beauty.