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Business Details
50 Years
experience
Professional Insulation & Ventilation Services in Milwaukee
Bob O'Brien Insulation has been a trusted name in the insulation and ventilation industry since 1976. As a family-owned business, we specialize in delivering high-quality insulation solutions tailored to the unique needs of homeowners, builders, and remodelers across Milwaukee County and southeast Wisconsin. With over 40 years of hands-on experience, our team prioritizes energy efficiency, durability, and customer satisfaction in every project. We offer comprehensive services including attic, crawl space, and wall insulation, as well as roof and soffit ventilation solutions designed to enhance home comfort and reduce energy costs. Our commitment to excellence is reflected in our 100% satisfaction guarantee and free, no-obligation estimates for every client. Serving communities such as Delafield, Grafton, Hartland, and Racine, we combine technical expertise with personalized service to address both immediate needs and long-term home performance goals.

From identifying signs of under-insulation to implementing advanced ventilation systems, we educate clients on the importance of proper insulation and its impact on indoor air quality, structural integrity, and utility savings. Our dedication to staying current with industry standards ensures that every installation meets or exceeds recommended R-values and building codes. By focusing on transparency, reliability, and community trust, we have built a reputation as a go-to resource for homeowners seeking expert guidance and professional execution. Whether addressing mold prevention through improved airflow or optimizing energy efficiency, our team approaches every project with the same meticulous attention to detail that has defined our business for decades.
Services
Insulation Services Ventilation Services Roof Ventilation Attic Insulation Crawl Space Insulation
Details
  • Year established: 1976
Highlights and features
  • We have over 40 years of experience in residential insulation and ventilation.
  • Our team provides free, no-obligation estimates for every project.
  • We guarantee 100% customer satisfaction on all insulation installations.
  • We serve Milwaukee County and 15+ communities in southeast Wisconsin.
  • Our work improves energy efficiency, reduces utility bills, and prevents mold.
Services
Insulation Services
Our insulation services enhance energy efficiency by installing fiberglass, cellulose, and spray foam materials in attics, walls, and crawl spaces. Proper insulation reduces heating and cooling costs while maintaining consistent indoor temperatures. We assess existing insulation levels and recommend upgrades to meet modern R-value standards for improved comfort and savings.
Ventilation Services
We install roof, soffit, and attic ventilation systems to control moisture, prevent mold growth, and improve indoor air quality. Effective ventilation extends roof lifespan and reduces strain on HVAC systems. Our solutions balance intake and exhaust airflow to maintain optimal temperature and humidity levels throughout homes.
Questions
What areas do you serve?
We serve Milwaukee County and surrounding southeast Wisconsin communities including Delafield, Grafton, Hartland, New Berlin, Port Washington, and Racine.
Do you offer free estimates?
Yes, we provide free, no-obligation estimates for all insulation and ventilation projects regardless of size.
How can insulation lower energy bills?
Proper insulation reduces heat transfer, maintaining stable indoor temperatures and decreasing HVAC system workload, which can lower energy bills by 10-50% annually.
What signs indicate under-insulated homes?
Common signs include fluctuating room temperatures, cold floors/walls, high energy bills, and animal infestations in attics or crawl spaces.
What insulation types do you install?
We work with fiberglass, cellulose, batts, rigid board, and two-part spray foam insulation to meet different home requirements and R-value recommendations.
Are your contractors certified?
We recommend checking the Insulation Contractors Association of America (ICAA) for certified professionals, though our 40+ years of experience demonstrates our expertise.
Reviews (2)
Tim Rick
Nov 23, 2021 Report
The consummate professional. The more we spoke during my estimate. The more money the man saved me.... Hard to find a contractor as honest as Mr. Bob O'Brien
Judy Yan Moffatt
Sep 19, 2021 Report
We used OBrien attic insulation service recently to get my house ready for the winter. Having a quick conversation with Bob, he knows his business well. My husband and I are very satisfied with their professionalism and cost-effectiveness. O'Brien team is great to work with, very punctual and respectful. Particularly, Bob has over 30 years of expertise in home insulation; he is very transparent with the price and their capability to manage our expectations. He recommended some cost saving which we dont even know about. I compared few options, they are the best in price. We are very happy