page-template,page-template-full_width,page-template-full_width-php,page,page-id-6097,theme-onyx,fl-builder,mkd-core-2.0.1,mikado-core-2.0.1,woocommerce-no-js,ajax_fade,page_not_loaded,,onyx child-child-ver-2.0.0,onyx-ver-3.2,vertical_menu_enabled, vertical_menu_left, vertical_menu_width_290,smooth_scroll,side_menu_slide_from_right,onyx_mikado_set_woocommerce_body_class

About Us



Allsource Supply Inc. is a family owned and operated business located in the heart of the midwest. The combined experience of the husband and wife duo spans from construction operations and management to supply chain logistics. Over the past few decades, Roy and Kathleen have had their hands in every part of the process and can provide first-hand knowledge based on personal experience.

roy magnuson

Roy Magnuson

Allsource Supply Owner

Roy is a construction industry professional with over 20 years of hands-on experience in all aspects of the building process. An early experience with decorative concrete led him to focus his attention on improving the appearance and functional use of concrete through a variety of approaches. His constant pursuit of new products, techniques, application processes, and knowledge led him to start Allsource Supply Inc. to help like-minded and driven professionals become more successful and profitable. With a degree in Business Administration and over a decade in customer service for a Fortune 500, he knows how to respond to his customer needs in an urgent manner. He also credits his business partner and wife Kathy for keeping him focused and on task. Roy and Kathy spend most of their free-time together with family and friends. They continue to stay young by chasing around their numerous grandchildren for added entertainment.

kathleen ertmer

Kathleen Ertmer

Allsource Supply Owner

Kathleen combines a Bachelor’s Degree in Accounting with 20+ years of hands-on experience in the construction industry. When she framed her first home at age 25, her love of construction began. After graduating from UW – Oshkosh, she began her construction career as an accountant for a large multi-family construction company. The following year she was approached by a large home builder, Andrew Homes, to become a part of their team. She became Operations Manager and Cost Accountant for the company over the next 10 years. She was involved with all aspects of building homes from specifications, to bidding and pricing the projects, project management, vendor contracts, designing homes and working with the customers throughout the building process. She continued in the construction industry assisting her husband at Allsource Supply Inc. over the past 16 years in consulting and selling construction repair products to contractors across the nation.

Head Shot cropped

Aerin Putzke

Allsource Supply Operations Manager

Aerin joined the Allsource Supply team July of 2022. Aerin is currently going to school at Moraine Park Technical College to get her associates degree in Social Media Management and Marketing. She will be graduating in December 2024. Aerin helps with everyday tasks while managing the Allsource Supply social media accounts and website. In Aerin's free time she enjoys going camping and spending time with friends and family especially her goddaughter. Aerin is a great asset to this company and we can't wait to see how she can help expand this company.

Andrea Website cropped

Andrea Alf

Allsource Supply Office Manager

Andrea joined Allsource Supply Inc. in March 2023 and assists with office operations and supporting the Allsource team. Having been in real estate for 19 years, Andrea has a solid background in sales and customer service and has held various leadership roles. She understands the importance of quality inside and outside of a home. In her free time she enjoys spending time with friends and family, especially her six beautiful grandchildren.


Click To Call