About Duerst Insulation & Concrete

Meet Lee Duerst

Owner and CEO

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 for and participated in several DOE energy studies.

It didn’t take long to see a few minor changes to the traditional insulation approach can make a world of difference. So, in 2001,  I officially opened my business as Duerst Energy Consulting and Insulation.

We insulate hundreds of Wisconsin homes each year and have installed enough cellulose insulation to fill a football stadium. A high portion of our business comes from referrals, and we always stand behind our work.

I take pride in using a research-backed approach to provide the most reliable and cost effective options. Whether remodeling an existing home, adding on to a business, or building a new home or facility, better insulation means more comfort and lower bills.

Using state-of-the-art equipment and materials, we employ “green” technologies with the goal of reducing environmental impact and saving money for those we serve.

Thank you for considering us.

Lee Duerst, Owner

“Duerst delivered exactly what they promised, and that is pretty rare today.”

Susan M.
Susan M.
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It's rare in this day and age to find a contractor who responds quickly. Lee and crew are professional and knowledgeable as to what type of insulation I needed in my 1876 historical home. They were courteous and kept me informed of any issues they found before curing. They discovered that I had two separate attics. Both are now well insulated so my big old house is cozy and warm. I highly recommend using Duerst Insulation for your projects. An added plus was they filed all necessary paperwork directly to Focus on Energy and subtracted the rebate from my final invoice.
Rick L.
Rick L.
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From my first call, to an estimate, to have our concrete raised...all within one week. The workers were professional, prompt and respectful. We couldn’t be happier with the end results. Wish we would have had our concrete raised sooner! Excellent!
Debra O.
Debra O.
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The workers came to do the work within 2 weeks as scheduled and did an awesome job. They were courteous and let me know how they were going to do the work. They blew insulation in the attic and found places that needed more and added the extra. Then they donned their spray foam outfits and filled all the sills in the basement. They were very efficient and had the job done in one day. Afterwards, they pulled out their shop-vac and cleaned up after themselves. My house was almost cleaner when they left. My house is now warmer and more energy efficient than ever. I expect to have lower energy bills next winter. Thanks for the excellent service!
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Dean D.
Dean D.
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Had roof deck spray foamed and was very happy with the results. Team pleasant and easy to work with. Office responsive and timely to requests. Prices reasonable for what I was having done. Would not hesitate to recommend.
Rick L.
Rick L.
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Lee and his team did a great job! My house is now cozy and warm again:) Thanks!
Dan S.
Dan S.
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Great people!
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Services and Products

Insulation

The Smart Approach

We are a top reviewed contractor in Madison, Wisconsin for a reason. Our products and approach are scientifically backed, and we’ve insulated thousands of homes in our community.

Concrete Lifting

Raising and Resurfacing

Sidewalk or driveway sinking may have already cracked your sidewalk in a few spots. So long as the overall slabs are intact, we can lift, stabilize, and resurface old concrete to extend its lifespan well beyond its original life.

Sound Control

and so much more...

From sound reduction to ice dams, mold, comfort, and more, we can fix a lot of common building issues. That’s because many of these problems are caused by insufficient or low quality insulation. Get more out of your insulation.

Automatic

State Rebates & Incentives

Many (though not all) Wisconsin insulation projects are eligible for hundreds of dollars in rebates through the state’s Department of Energy. We typically capture at least 1 rebate per week for our clients.

We are certified to implement these rebates and complete nearly all the paperwork for you. We even instantly discount the rebate from your invoice, so you’re not left waiting for the rebate check to arrive.

Know YOUR Numbers

Planning with general numbers often leads to inaccurate estimations and budgets. That’s one of the many reasons we offer free estimates. Whether you need a quick fix or are planning for work next year, work with actual numbers specific to you.