Contact Sign In Add Your Business
Duerst Insulation Technicians Duerst Insulation Technicians
Call Now
Website
Call
Business Details
Expert Insulation Services in Madison, WI
Duerst Insulation Technicians has been delivering expert insulation solutions for over 25 years, combining deep local experience with a commitment to energy efficiency and customer satisfaction. Our team specializes in attic, basement, and wall insulation, air sealing, and concrete leveling, using state-of-the-art materials to enhance home comfort and reduce energy costs. As a locally owned business, we prioritize science-backed approaches and eco-friendly technologies, ensuring long-term value for Wisconsin homeowners.

With a focus on precision and reliability, we help clients access energy rebates and navigate programs like Focus on Energy and the IRA HOMES initiative. Our reputation for quality workmanship and exceptional service has made us a trusted choice for insulation upgrades, removal, and soundproofing solutions across Madison and south-central Wisconsin.
Services
Attic Insulation Basement Insulation Wall Insulation Blown Attic Insulation Air Sealing Insulation Removal Soundproofing Concrete Lifting Energy Audit Rebate Assistance
Highlights and features
  • Over 25 years of experience in insulation and energy efficiency solutions
  • Locally owned and operated with deep community ties
  • Specialize in attic, basement, and wall insulation tailored to Wisconsin homes
  • Help customers access up to $10,000 in energy rebates
  • Offering safe and efficient insulation removal and replacement services
Associations and certifications
  • IRA Registered Contractor
Update Listing
Services
Attic Insulation
Our blown-in cellulose attic insulation creates a seamless thermal barrier that reduces energy loss and stabilizes indoor temperatures. Meeting R-50 standards, this solution improves efficiency while offering soundproofing and pest resistance. We combine insulation with air sealing to prevent conditioned air leakage, ensuring long-term comfort and cost savings for Wisconsin homeowners.
Air Sealing
We identify and seal gaps in attics, basements, and walls using caulk, spray foam, and weatherstripping to stop air infiltration. This process eliminates drafts, lowers energy bills, and enhances indoor air quality by blocking pollutants. Our comprehensive sealing ensures insulation performs at peak efficiency, creating a more comfortable living environment year-round.
Concrete Lifting
We restore uneven sidewalks, driveways, and patios using polyurethane foam injection or mudjacking techniques. These methods raise sunken concrete slabs safely and affordably, eliminating trip hazards without full replacement. Projects typically complete in hours, with surfaces ready for immediate use and lasting durability against future settling.
Wall Insulation
We install spray foam or cellulose insulation in walls without removing drywall, improving thermal performance and sound control. This minimally invasive process enhances energy efficiency while reducing noise transfer between rooms. Our solutions address moisture concerns and improve overall home comfort without major construction disruptions.
Insulation Removal
We safely remove old, damaged, or contaminated insulation from attics and crawlspaces using protective containment procedures. Our team handles disposal of vermiculite, fiberglass, and degraded materials while preparing spaces for modern, high-efficiency installations. This service improves indoor air quality and restores optimal insulation performance for healthier homes.
People
Lee Duerst
Owner
Lee Duerst leads with over 40 years of local insulation expertise, focusing on science-backed solutions for energy efficiency. He oversees installations of cellulose insulation that fill football-stadium volumes annually, prioritizing customer satisfaction and sustainable practices.
Nic Miller
Field Operations Manager
Nic Miller manages daily operations, ensuring precise execution of insulation and concrete leveling projects. With technical expertise in modern installation methods, he coordinates teams to deliver efficient, high-quality service while maintaining safety standards across all job sites.
Questions
What insulation services do you offer for Wisconsin homes?
We provide attic, basement, and wall insulation using cellulose, spray foam, and fiberglass materials. Our services include air sealing, insulation removal, soundproofing, and concrete leveling to improve energy efficiency and comfort.
How can I qualify for energy rebates through your services?
We help homeowners access Focus on Energy program rebates and IRA HOMES initiative incentives by applying rebates directly to project costs, simplifying paperwork and reducing upfront expenses for qualifying insulation upgrades.
What makes cellulose insulation a good choice for attics?
Cellulose insulation offers superior air resistance, soundproofing, and pest resistance while meeting R-50 standards. It's cost-effective, eco-friendly with recycled content, and outperforms fiberglass in thermal performance for Wisconsin's climate.
Do you offer concrete repair services besides full replacement?
Yes, we specialize in concrete lifting using polyurethane foam injection or mudjacking methods that restore uneven surfaces at 50-70% less cost than replacement, with minimal disruption and faster completion times.
How does air sealing improve home energy efficiency?
Air sealing stops conditioned air leaks through gaps in attics, basements, and walls, preventing energy waste. When combined with proper insulation, it reduces HVAC strain, lowers utility bills, and maintains consistent indoor temperatures year-round.