Insulation Contractor Serving Madison, Dane County & South-Central Wisconsin

Insulation Done Right. Comfort That Lasts.

Duerst Insulation Technicians provides professional attic insulation, wall insulation, air sealing, insulation removal, energy audits, soundproofing, and concrete lifting for homeowners throughout Madison, Dane County, and South-Central Wisconsin.

Over 25 Years in Business | Over 40 Years of Experience | Locally Owned & Operated | Rebate Guidance

You May Qualify for Energy-Saving Rebates

Many insulation and air sealing projects may qualify for Focus on Energy and other Wisconsin energy-efficiency rebates. Our team helps homeowners understand available rebate opportunities and apply qualifying rebates directly to project costs whenever possible.

We Provide Your Rebates Up Front

In the past 5 years, Duerst Insulation Technicians has helped our customers receive over $1,000,000 in REBATES!

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Maximize Your Savings with Energy Rebates


Most insulation projects qualify for significant rebates through the Wisconsin Focus on Energy program—helping homeowners save hundreds or even thousands of dollars on energy efficiency upgrades.


At our company, we apply these rebates directly to your project cost, eliminating the hassle of paperwork and long wait times for reimbursement.



As an IRA Registered Contractor, we’re fully equipped to help you navigate available rebate programs and maximize your savings. Contact us today to learn how much you can save on your next home energy improvement.

Duerst Insulation Technicians is Proudly Providing the Following Services

Wall Insulation

Enhance Comfort and Efficiency with Expert Wall Insulation


Your home's walls are essential to maintaining a consistent indoor temperature and reducing energy costs. If you're looking to improve insulation, we offer effective solutions—without the disruption.


In most cases, we can insulate existing walls without removing drywall, saving you both time and money while boosting your home’s comfort and efficiency.

Blown Attic Insulation

Boost Efficiency with Blown Attic Insulation


A properly insulated attic is one of the most cost-effective ways to improve your home's energy performance. Our blown-in attic insulation provides comprehensive coverage, sealing gaps and preventing heat loss where it matters most.


This efficient installation method allows us to upgrade your attic insulation quickly and with minimal disruption, delivering immediate improvements in comfort and long-term savings on your energy bills.

Attic space with spray foam insulation on the angled ceiling, a small skylight, and a concrete floor.

Air Sealing

Seal in Comfort. Lock Out Energy Loss.


Effective air sealing is critical to getting the full value from your insulation. By closing gaps, cracks, and leaks in your home’s structure, we help you eliminate drafts, reduce energy waste, and cut down on utility costs.

In short, the warm air you’ve paid for stays where it belongs—inside your home.


Our experienced team is committed to making your home more energy-efficient, comfortable, and cost-effective for years to come.

Sound Proofing

Quiet Comfort with Expert Soundproofing Solutions


Whether you're looking to reduce outside noise, create a peaceful home office, or add privacy between rooms, our soundproofing services deliver the quiet you need.


Using proven materials and techniques, we tailor each solution to your space—minimizing noise transfer and enhancing comfort without compromising design or function. Contact us today to explore how soundproofing can improve your home environment.

Insulation Removal

Safe, Clean, and Efficient Insulation Removal


Old, damaged, or contaminated insulation can compromise your home’s comfort and efficiency. Our professional insulation removal services ensure your property is thoroughly cleared and ready for a clean, effective new installation.


With minimal disruption to your daily routine, our experienced team handles the process with care, precision, and safety. Schedule a consultation today and take the first step toward a healthier, more energy-efficient home.

Concrete Leveling/Lifting

Restore Safety and Stability with Concrete Leveling


Uneven or sunken concrete can create tripping hazards and diminish your property’s curb appeal. Our concrete leveling and lifting services provide a fast, effective solution—raising and stabilizing sidewalks, driveways, patios, and more without the need for full replacement.


Using advanced techniques and durable materials, we restore your surfaces to a safe, even condition with minimal disruption. Reach out today to schedule an assessment and protect your investment.

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Why Choose Duerst Insulation Technicians?

We think our customer's say it best.....