The Best Insulation Contractors in Ontario, WI

Compare the highest-rated insulation professionals in Ontario, Wisconsin. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Energy Services of Wisconsin

4.8
(145 reviews)
Verified

A highly-rated, locally-owned company based in Viroqua specializing in comprehensive home performance and energy efficiency upgrades. They are known for their professional energy audits and expert installation of various insulation types, with a strong focus on creating comfortable, efficient homes. Their expertise in accessing state and utility rebates is a significant strength.

401 S Center St, Viroqua, WI 54665 (Approx. 12 miles from Ontario)

Specialties & Features

Energy efficiency audits
Blown-in insulation
Air sealing services

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

K-Wall Insulation

4.7
(90 reviews)
Verified

A well-established contractor located in Sparta with a strong reputation for insulation and concrete work. They offer a wide range of services, from foundational spray foam to traditional attic and wall insulation. Their longevity in the area suggests deep knowledge of local building practices and codes.

21654 US Hwy 12 & 16, Sparta, WI 54656 (Approx. 15 miles from Ontario)

Specialties & Features

Spray foam insulation
Basement and crawl space insulation
Wall insulation services

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#3

Tri-State Insulation

4.5
(75 reviews)
Verified

Serving the tri-state area from La Crosse, this company is a reliable option for a full suite of insulation services. They handle both residential and commercial projects, including specialized services like insulation removal and replacement. Their larger service area makes them a viable and experienced choice for homeowners in Ontario.

2203 Commerce St, La Crosse, WI 54603 (Approx. 30 miles from Ontario)

Specialties & Features

Insulation removal and replacement
Attic insulation installation
Blown-in insulation

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Ontario

The insulation market in the Ontario, Wisconsin area is characterized by a small number of highly specialized, regional contractors rather than a high volume of local competition. Due to the rural nature of Vernon County and surrounding areas, the providers that exist tend to be established, reputable companies with strong local track records. The average quality is high, as these businesses rely on word-of-mouth and community reputation. Pricing is competitive but can be influenced by travel distance to the job site. Homeowners in Ontario benefit from having access to contractors with deep expertise in energy efficiency, particularly given the climate, and who are well-versed in local building codes and available rebate programs from utilities like Xcel Energy and Focus on Energy. The market is not saturated, allowing these top-tier providers to maintain a focus on service quality and customer satisfaction.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Ontario regulations and climate

Frequently Asked Questions About Insulation in Ontario

Get answers to common questions about insulation services in Ontario, Wisconsin.

1What is the recommended R-value for attic insulation in Ontario, Wisconsin, and why is it important for our climate?

For our cold Wisconsin climate, the U.S. Department of Energy recommends an attic R-value of R-49 to R-60. This high level of insulation is crucial to combat Ontario's harsh winters, where temperatures frequently drop below freezing, to prevent significant heat loss through the roof. Properly meeting this target reduces heating bills substantially, improves home comfort by eliminating cold drafts, and helps prevent ice dam formation on the roof, a common issue in the region.

2When is the best time of year to schedule insulation upgrades in Ontario, WI?

The ideal times are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather which is optimal for installation and allows contractors to complete work efficiently. Scheduling during these shoulder seasons ensures your home is properly sealed before the peak heating season begins, and you'll avoid the high-demand summer and late-fall rush when contractor schedules fill up quickly.

3Are there any local rebates or incentives in Wisconsin for improving home insulation?

Yes, Wisconsin homeowners should explore programs like Focus on Energy, which offers cash-back rebates for adding insulation to meet specific R-value targets. Additionally, your local utility, such as Vernon Electric Cooperative or Xcel Energy, may have their own incentive programs. It's always wise to check with your insulation contractor, as reputable local providers are usually well-versed in the latest available rebates and can help you with the application process.

4How do I choose a reliable insulation contractor in the Ontario area?

Look for a licensed and insured contractor with specific experience in Wisconsin's climate. They should perform a thorough energy audit or assessment before providing a quote. Check for local references and reviews, and verify they are familiar with Wisconsin's Uniform Dwelling Code for insulation requirements. A trustworthy provider will also clearly explain the differences between insulation types (like blown-in cellulose, fiberglass batts, or spray foam) and which is best for your specific home and budget.

5My older home in Ontario feels drafty. Should I prioritize air sealing or adding more insulation first?

Air sealing should almost always be your first priority, especially in older Wisconsin homes where gaps and cracks can be significant. Adding insulation on top of air leaks is less effective, as the moving air reduces the insulation's performance and can lead to moisture problems within walls. A professional assessment will identify key leakage areas (attic hatches, wiring holes, sill plates) that need sealing before new insulation is installed, ensuring you get the full energy-saving benefit and improved indoor air quality.