Northwest Indiana's Premier Supplier of Building Components and Trusses

Northwest Indiana's Premier Supplier of Building Components and Trusses

Northwest Indiana's Premier Supplier of Building Components and TrussesNorthwest Indiana's Premier Supplier of Building Components and TrussesNorthwest Indiana's Premier Supplier of Building Components and Trusses
Building Materials, Lumber, windows doors trim wall panels trusses hardware osb

COVID 19 Response

Covid-19 Response

The COVID-19 Virus is having a large impact in our community and we feel we must take steps to protect our staff, our customers, and our surrounding community.


Monday – Saturday:  The showroom is open by appointment only. Please call 219-987-2781 Monday - Friday from 8 am to 4 pm to schedule an appointment. Appointments can be scheduled to make product selections for special order items such as windows, doors, and cabinetry.

Monday – Friday from 8 am to 4 pm:  Stock items may still be purchased, however the process has been updated to reflect coronavirus concerns.  The retail store will be closed on Saturday. Please remain in the vestibule and wait for a Kaper’s employee to take your order and process your payment. Payments can be made with credit cards only. The KBM sales person will give the sales ticket/receipt to a KBM yard employee who will prepare your order. We ask that you drive to the designated area on the South side of the showroom and remain in your vehicle while a KBM employee prepares your order and loads it in your vehicle. The KBM employee will leave the sales ticket/receipt in your vehicle with the material. Please remain in your vehicle until the KBM employee leaves the vicinity. At that time, the customer may exit the vehicle and secure the load. 

If you need to place orders for ongoing projects, please contact us at 219-987-2781 to remotely place your order.  You can also reach out to your specific salesperson via email or cell phone.

To further combat the impact of the virus, we are limiting our drivers contact with others on job sites, outside sales staff has been directed to halt their efforts other than remote contact, and vendor representatives have been directed to postpone visits.  

We apologize for the inconvenience this will likely cause our valued customers, but we feel this is necessary to keep as many people safe and healthy during this unprecedented time.

Thank you for your understanding.

Brent Kaper

About Us

Experienced and Reliable


Kaper’s  Building Material, Inc. is a family owned and operated independent  lumber yard located in DeMotte, Indiana. We have been conducting  business from the same location on the south side of town at the corner  of highway 231 and route 10 since 1936. That’s right…Since 1936! 

When you visit Kaper’s, you will find a  low-pressure family environment where you will find an unmatched level  of interest and unmatched quality. Your home is likely one of the  biggest financial investments you will make and we are ready to help  guide you while making all the important decisions. We will help you  think more in depth about everything beginning with the design and the  structural nature of your project all the way through the windows,  doors, siding, interior doors and trim, cabinets, kitchens, baths, and  more. Not only is it a huge financial investment, it can be a highly  stressful event. Even the smallest remodeling project can be a huge  headache, come to us and let us minimize that stress for you. A  well-planned and well-thought project will go much smoother and make  remodeling and building a much smoother process for you. 

Many people do not realize that different levels of quality exist in building materials. What level of quality are you looking for in your home? There  is bad lumber, there is good lumber, there is great lumber, and there  is engineered lumber. There are windows that will fill a hole in your  wall, and then there are windows that will make your friends  jealous. Come visit and see for yourself the quality of our product. We  feel a tour through our facility to see the products that will be used  in your home is one of our greatest selling tools. You will understand  why other companies may be hesitant to show you around.    

With the addition of Gold Standard Truss  and Panel we now have the ability to supply top quality roof trusses,  floor trusses, and prebuilt wall panel systems. You can have a fully  engineered house package that has been designed as a total system to  work together and then watch your home go from a mere foundation to  being ready for windows in a matter of days instead of weeks. 

Call or come visit and we will do our  best to help make your project a success. Bob Sr. always said, “our  success is based on your success.” 

Visit us at 1305 S Halleck St  *  DeMotte, IN  *  46310

Call us at 219.987.2781

Email us at 

Hours of operation:

Monday - Friday from 7-5

Saturday from 7-Noon

Sunday - Closed  

Contact Us

Are  you looking for information on rentals or a recurring order? Are you having  trouble finding something? Let us know! We will get back to you as soon  as possible with an  answer.

Kaper's Building Material, Inc.

1305 South Halleck Street, Demotte, Indiana 46310, United States

(219) 987-2781


Monday - Friday: 7am - 5pm

Saturday: 7am - 12pm

Sunday: Closed

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