About Our Company

InSoFast, LLC

InSoFast, LLC has provided superior quality products since 2006. We focus on developing energy efficient building systems that exceed present and future energy codes, outperform the competition, and simplify construction processes.

We are currently headquartered in South Dakota with offices in Pennsylvania. Our panels are manufactured and shipped factory-direct from facilities in Massachusetts, Minnesota and Idaho.

Lisa Schulze

Director of Sales

Lisa joined the InSoFast Team in May of 2018 as Director of Sales.  She comes to InSoFast with 15 years of experience in the construction industry.  Throughout her 20 years at Wind-lock, she worked in Sales, Marketing and Customer Support & Sales Management.  Though Lisa is new to the container industry, she is not new to meeting customers’ needs.  Because of her many years of sales experience, she puts the highest value into customer satisfaction and building long-lasting relationships with those customers. 

Lisa spends much of her free time with her family, especially going to the beach and camping with her son and daughter.  She loves to cook and bake, enjoys a great fantasy novel, and the next best series!

Edward Scherrer

Chief Innovation Officer/Engineer

Better building has been a constant in his life. Ed started with custom home construction and continued on with Insulating Concrete Form (ICFs), radiant heating systems, and finally with InSoFast panels. Ed’s passion is continually looking for ways to improve how things are built.

When ICFs were introduced to Ed, he took it on with complete enthusiasm. While ICFs provide a superior structure, the actual construction process was very technical and difficult. Ed had to develop for homeowners and contractors, how to seminars and developed an engineering package to aid the building officials. Ed contributed to the patent for improving of a new ICF design which maximized sizing flexibility and reduced shipping costs.

InSoFast panels were born from his experiences – in the ICF industry. Ed took the benefits: continuous insulation and built-in studs; and eliminated the technical and difficult a that = InSoFast. A product that was easy for DIYers and still answered all the issues that concerned the building science community. Ed develops fail-safe-in-the-field products for the homeowner to the seasoned building science professional.


  • Polysteel PolyPro ICF panel
  • InSoFast Insulation and Framing Panel
    • US Patent No. 8,635,824
    • US Patent No. Des. D863,599
    • CA Patent No. 2,761,810

Dean Seibert

Creative Director

Dean has been an integral part of InSoFast, LLC since 2009. He brings a wealth of experience from the synthetic stucco industry (EIFS), the structural insulated panel industry (SIPS), and the Insulation Concrete Form industry (ICFS).

Dean was a past chairman of the Insulating Concrete Form Association (ICFA) and worked with the Portland Cement Association (PCA) and the United Brotherhood of Carpenters to write the training manual for the ICF industry. 

Dean loves traveling out West where he backpacks and explores wilderness areas with his wife, Kristine, and his two children, Justin and Rachel.