Serving Madison, Wisconsin  |  Keeping you smooth, cool and warm! 


About Duerst Insulation Technicians

Welcome to our website and thank you for considering our company.

Meet Lee Duerst, Owner of Insulation Technicians

I have been in the building and insulation business since 1982. I began with CAP Services to supervise their furnace Retro-fit program, then in a Field Coordinator position.

In 1985, I was named Director of the Weatherization Program, a Department of Energy (DOE) federal program. In this position, I was involved in third-party testing and participated in several DOE energy studies.

Over the years, I worked with numerous agencies and services in many Wisconsin counties involved with weatherization and housing, including Project Home and HUD.

In 2001, I officially opened my business as Duerst Energy Consulting and Insulation. In 2006, I purchased Insulation Technicians in Oshkosh and expanded our service area.

For the last four years, we've averaged over 600 per years, have sprayed enough foam to cover a football field nearly 10 feet deep, and have installed 250,000 bags of cellulose.

Without you, I wouldn't be in business. Without a keen commitment to quality - in the work we do and the products we use - I would not stay in business.

One of our clients noted to us that we "delivered exactly what they promised and that is pretty rare today."
I take considerable pride in keeping us on the cutting edge of the industry, so that we can better serve you.

Whether remodeling an existing home, adding on to a business, or building a new home or facility, you're seeking to improve overall heating and cooling efficiencies.

Using state-of-the-art equipment and materials, we employ "green" technologies, with a continual eye towards reducing environmental impact and saving money for those we serve.

Thank you for considering us,

Lee Duerst
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