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Greg Amundson, inventor of InstaTrim, owns and operates his company, CornerFlex, Inc., with his wife Betsy in Scandia, MN. They both deeply appreciate products developed and produced in the United States of America.  Therefore, all InstaTrim products will only be manufactured, supported and produced in the U.S.A.

Betsy is a seasoned marketing and project manager.  She is instrumental in moving the business forward with a commitment to customers and community.

Greg describes himself as a “garage inventor.” He went from creating solar energy at age 14 by heating water with a piece of glass in the rays of the sun to inventing and patenting InstaTrim, THE universal trim solution. He invented InstaTrim because he was tired of seeing caulking that “looked like a monkey installed it.” He was determined to create a caulking alternative that is user-friendly and looks good every time. As a result, do-it-yourselfers across the country are trimming their home improvement projects with less mess and stress.

Together, Greg, Betsy, their team, and InstaTrim customers are giving back to veterans, their communities, and the environment.


Supporting Community, Veterans and the USA

Greg and Betsy work together and serve together, donating their time and product to Operation Honor – Veteran Proud, a non-profit organization that hires veterans to make hand-crafted burial and retirement flag cases. InstaTrim provides the perfect seal for the cases.

The Amundson’s are honored to serve you, their customers, who are using InstaTrim to make caulking easy across the country.

Supporting our Environment

Betsy and Greg are proud of the fact that InstaTrim adhesive trim strips are a healthier alternative to caulk. They are non-toxic and made of PVC, which doesn’t require curing, so there are no toxic and smelly fumes. The product is also environmentally friendly, leaving very little waste and the packaging is 100% recyclable.

Great Products Means Great Results

News reporters have written about this patented caulking alternative in the Star Tribune and Finance & Commerce. The product is available on our website and at these fine retailers - home depot, amazon.com and Walmart.com.