The Best Insulation Contractors in Dover, IL

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

#1

Sorells Construction & Insulation

4.8
(110 reviews)
Verified

A family-owned and operated business known for high-quality workmanship and excellent customer service. They specialize in both residential and commercial insulation and are well-regarded for their expertise in spray foam and blown-in insulation, often partnering with energy auditors to provide comprehensive home performance solutions.

2224 Maytown Rd, Princeton, IL 61356 (Serves the Dover area)

Specialties & Features

Spray foam insulation
Blown-in insulation
Energy efficiency audits

Business Information

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

Illinois Valley Insulation Inc.

4.7
(85 reviews)
Verified

A dedicated insulation contractor with a strong local reputation for professionalism and reliability. They offer a wide range of insulation services and are particularly skilled in handling complex projects in existing homes, including insulation removal and air sealing to address comfort and moisture issues.

2929 4th St, Peru, IL 61354 (Serves the Dover area)

Specialties & Features

Insulation removal and replacement
Air sealing services
Basement and crawl space insulation

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

All Weather Insulation & Gutter

4.6
(70 reviews)
Verified

A versatile contractor that provides both insulation and gutter services, making them a convenient option for homeowners tackling multiple exterior home performance projects. They receive consistent positive reviews for their attic insulation upgrades and wall insulation services, focusing on improving overall home energy efficiency.

1307 Maytown Rd, Princeton, IL 61356 (Serves the Dover area)

Specialties & Features

Attic insulation installation and upgrade
Wall insulation services
Blown-in insulation installation

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Dover

The insulation market serving Dover, Illinois, is characteristic of a rural Midwestern area. There are no dedicated insulation contractors physically located within Dover itself. Homeowners must rely on established businesses from nearby regional population centers, primarily Princeton (approx. 10 miles away) and Peru (approx. 15 miles away). The competition level is moderate, with a handful of reputable, long-standing providers dominating the market. These companies have built their reputation over a decade or more and rely heavily on word-of-mouth and local reviews. The average quality of service is high, as these contractors are deeply integrated into the community and understand the specific climate challenges and building styles of north-central Illinois. Typical pricing is competitive but can be influenced by travel time to more rural locations like Dover. Homeowners should expect to pay within standard national averages, with project costs varying significantly based on the type of insulation and the scope of work. For example, blown-in attic insulation for an average home may range from $1,500 to $3,500, while a full spray foam application can be a more significant investment of $5,000 to $15,000+. Most reputable contractors offer free estimates and are knowledgeable about local utility rebates (e.g., from Ameren Illinois) and federal tax credits for energy-efficient improvements.

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 Dover regulations and climate

Frequently Asked Questions About Insulation in Dover

Get answers to common questions about insulation services in Dover, Illinois.

1What is the recommended insulation level (R-Value) for attics in Dover, Illinois homes?

For Dover's climate, which experiences cold winters and hot, humid summers, the U.S. Department of Energy recommends an attic insulation level of R-49 to R-60. This is typically achieved with about 16 to 20 inches of blown-in cellulose or fiberglass. Properly meeting this R-Value is crucial for energy efficiency, as it helps combat both winter heat loss and summer heat gain common in Central Illinois.

2Are there any local rebates or incentives for insulation upgrades in Dover or Bureau County?

Yes, homeowners should first check with Ameren Illinois, the local electric and gas utility, for their residential energy efficiency rebate programs, which often include insulation. Additionally, the state of Illinois offers sales tax exemptions on certain Energy Star-rated insulation materials. It's also wise to inquire with your insulation contractor about any current promotions and to see if your project qualifies for federal energy efficiency tax credits.

3When is the best time of year to install or upgrade insulation in my Dover home?

While insulation can be installed year-round, the ideal periods in Illinois are late spring (April-May) and early fall (September-October). These seasons typically offer mild, dry weather, which is optimal for attic work and allows contractors greater availability. Scheduling outside of the extreme summer heat and winter cold also helps ensure a more comfortable installation process and allows you to address any air sealing needs before the harsh weather sets in.

4How do I choose a reliable insulation contractor serving the Dover area?

Always choose a licensed and insured Illinois contractor. Look for providers with strong local references in Bureau County and membership in organizations like the Insulation Contractors Association of America (ICAA). A reputable contractor will perform a thorough energy audit or assessment, provide a detailed written estimate that includes R-Values and material types, and clearly explain the work process, including how they will manage existing insulation like vermiculite, which may be found in older area homes.

5Besides the attic, what are the most critical areas to insulate for Dover's climate?

In addition to the attic, properly insulating basement walls and crawl spaces is vital to prevent cold floors and heat loss. Sealing and insulating the rim joist (band joist) is especially important in our climate. Also, check wall insulation in older homes, as many built before the 1980s may have insufficient or settled insulation. Addressing these areas creates a full thermal envelope, protecting against our windy winters and reducing the strain on your heating and cooling systems.