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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.

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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.

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Kathy Ertmer

Allsource Supply Owner

With over 40 years of hands on experience in the residential and commercial building industry, Kathy stands as a pillar of expertise and dedication. Her journey commenced over two decades ago when she delved into the intricate realm of floor coatings, where her passion and commitment quickly became apparent. For more than 20 years, Kathy has not only navigated but excelled in the entrepreneurial landscape, founding and leading her own family-owned company alongside her husband. Their enterprise has flourished, becoming renowned for its unwavering dedication to quality, integrity, and honesty in the industry. Kathy's profound understanding of floor coatings is complemented by her steadfast devotion to her clients and contractors. She has forged enduring partnerships within the building industry, collaborating closely with professionals to deliver outstanding results. Beyond her professional pursuits, Kathy is esteemed for her compassion and mentorship. She takes great pride in nurturing the skills and talents of her contractors, guiding them towards success and fostering a culture of support within the industry. As a distributor of floor coatings, Kathleen's mission transcends mere business transactions; she genuinely cares for the welfare of her clients and peers, striving to provide solutions that not only meet their needs but surpass their expectations. At the core of her professional journey, Kathy Ertmer embodies the values of knowledge, dedication, integrity, and family. Her impact extends far beyond the floors she coats, leaving a lasting imprint on the lives she touches and the standards she upholds within the building industry.

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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.

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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.


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