Who We Are

InSoFast, LLC

InSoFast, LLC has provided superior quality insulation 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 employees across the US.

Our products are manufactured and shipped factory-direct from facilities in Idaho, Massachusetts, Minnesota, Nevada, Pennsylvania, and South Dakota.

Edward Scherrer

Chief Innovation 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 developed training seminars for homeowners and contractors and created an engineering package to aid the building officials. Ed contributed to the patent for improving 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 of ICFs which were continuous insulation and built-in studs and eliminated the problems of ICFs to create InSoFast panels. InSoFast is 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.

Spending time with family is important to Ed. He enjoys many outside activities:  biking, hiking, camping and a good campfire.  While based in Mitchell, SD – home of the World’s Only Corn Palace, touring around the country in the motorhome really makes him happy.

  • 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

Paula Scherrer


Ed and Paula started InSoFast in 2006 to make a better insulation product available for everyone, from the DIYer to the professional. It has been a fun journey to hear people excited about insulation . . . who would have thought!  Helping people make a better place to live and work is their focus.

Paula handles all the financial aspects of InSoFast and also helps out with the marketing team.  Her greatest joy in life is gathering with family and friends and even planning her family reunions of over 100 people and she can never get enough time with her new grandbaby!  Cooking and gardening are relaxing.  Traveling and creating scrapbooking are fun but riding her horse in the Black Hills of South Dakota fills her soul.

Lisa Crenshaw

Sales Representative

Lisa joined our team in September of 2021. She comes to InSoFast with 19 years of experience in the construction and sales industry.  Throughout her years, Lisa worked 11 years at ToolPro and seven years at Wind-lock on the sales teams.  She is new to the insulation industry but not new to meeting customers’ needs and service expectations.  She puts the highest value on customer satisfaction and building long-lasting relationships with customers. Her customers come first!

Most of Lisa’s free time is with her family in Georgia.  Her eight grandkids keep her busy with baseball, soccer, and softball games.  She loves to cook and bake and really loves entertaining.

Jess Varela

Supply Chain Manager

Jess comes to the InSoFast Team with more than 26 years of Manufacturing and Management experience. Throughout this time, he was able to learn all aspects of managing a manufacturing facility. Management included personnel, inventory management, production flow, and logistics/freight.  These experiences are what brought Jess to InSoFast. He continues to develop his excellent customer service skills, attention to detail, and positive attitude!

Based out of Colorado, Jess loves pending time with his children and grand children and watching sports!  Go Broncos!

Matthew Scherrer

Head of Sales

Matt comes to InSoFast with 11 years of industry experience in both the commercial sector and the residential sector. During his time in commercial construction, he assisted in management of over 1.8 billion dollars of project value, including Denver International Airport, The FoundryLine Residential Highrise in downtown Denver, and various healthcare projects with UC Health in Colorado Springs. During his time in residential construction, he worked on home remodels with his father, Ed Scherrer.

Matt enjoys spending time with his wife and new daughter and loves everything outdoors. His wife is a motocross coach, so he ends up spending most weekends at the motocross track, or working on their own private motocross track.


Rachel Seibert

Marketing & Social Media Manager

Based in the mountains of Park City, Utah, Rachel had the pleasure of joining the InSoFast family as a leader in marketing and social media back in October 2022. She is new to the construction industry but not new to loving innovative technology. Having worked in the ski/snowboard and mountain bike industry for the past 5 years, Rachel has always had a ton of appreciation for the intricacy and complex engineering that goes into the ongoing development of extreme products that propel us forward.  

Coming from a deep respect for the outdoors and everything the mountains have to offer, Rachel wants to see a greener, brighter outlook in the construction world.  Energy efficiency and greener building is necessary.  Products like InSoFast continuous insulation need to be at the forefront.  When we learn something works better than the traditional, why would we not keep moving forward with that technology?  InSoFast is the future of building, and Rachel is here to drive that message home! She wants to see snow in her future and energy efficient walls keeping her warm inside!