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TRUSTED BY GILLESPIE, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon15
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Gillespie, IL

*The Angi rating for Insulation Service companies in Gillespie, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Gillespie, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on December 08, 2025

Find Insulation pros in Gillespie

Avatar for Window Nation St. Louis

Window Nation St. Louis

4.72(
18
)

Window Nation St. Louis

4.72(
18
)
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.

"Professional, timely and best installers we’ve had. Our installers took to time to get everything fit right. They had their hands full with a few doors and windows, due to bad framing from our construction contractor. Our new doors and windows work flawlessly now."

Tony P on September 2025

At Window Nation, we know replacement windows. We’re third-generation window replacement experts who have been lucky to provide homeowners replacement windows, siding, and doors for over fifteen years. We opened our first showroom in Maryland in 2006, quickly growing to serve homeowners in cities across the country – and we’re not stopping there. We’re grateful for every homeowner who has trusted us to upgrade their most important asset: their home. We’ve learned a lot about home improvement over the years, but the most important thing we learned isn’t about window replacement. We learned the home improvement industry isn’t about offering the best windows, siding and doors; it’s about the relationships we build with our customers.

"Professional, timely and best installers we’ve had. Our installers took to time to get everything fit right. They had their hands full with a few doors and windows, due to bad framing from our construction contractor. Our new doors and windows work flawlessly now."

Tony P on September 2025

Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
10 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Avatar for Advanced Foam Insulation

Advanced Foam Insulation

No reviews yet

Advanced Foam Insulation

No reviews yet
16 years of experience

Advanced Foam Insulation is family owned and managed business, in which Jeff the owner will be there from the free estimate to the finished project. Jeff also does the work himself, no subcontracting. We specialize in residential & commercial.

Advanced Foam Insulation is family owned and managed business, in which Jeff the owner will be there from the free estimate to the finished project. Jeff also does the work himself, no subcontracting. We specialize in residential & commercial.

Custom Construction & Remodeling

1.00(
2
)

Custom Construction & Remodeling

1.00(
2
)
27 years of experience

Custom Construction is a Licensed and Insured FULL SERVICE DESIGN and BUILD Company and General Contractor with a wide range of experience. Interior to Exterior, from A to Z one call does it all. Let our dedicated team of experts make your dreams come true. We handle all types of remodeling. We accept all major credit cards and offer financing for quailifed clients. Emergency 24/7 services available

Custom Construction is a Licensed and Insured FULL SERVICE DESIGN and BUILD Company and General Contractor with a wide range of experience. Interior to Exterior, from A to Z one call does it all. Let our dedicated team of experts make your dreams come true. We handle all types of remodeling. We accept all major credit cards and offer financing for quailifed clients. Emergency 24/7 services available

Avatar for Capital Weatherization LLC

Capital Weatherization LLC

5.00(
2
)

Capital Weatherization LLC

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a full service Home Performance Contractor. We are a owner-operated company that combines passion and science to make your home more comfortable and efficient. The owners are on site with their employees during all installations.

"Tim & his crew did a great job. They showed up on time & protected our floors with tarps. They worked hard all day with bitter temps outside, and they cleaned up afterwards. Our house feels more comfortable throughout. Looking forward to seeing the changes in our power costs."

Amy D on February 2018

We are a full service Home Performance Contractor. We are a owner-operated company that combines passion and science to make your home more comfortable and efficient. The owners are on site with their employees during all installations.

"Tim & his crew did a great job. They showed up on time & protected our floors with tarps. They worked hard all day with bitter temps outside, and they cleaned up afterwards. Our house feels more comfortable throughout. Looking forward to seeing the changes in our power costs."

Amy D on February 2018

Terminix Termite & Pest Control - Aurora

2.67(
3
)

Terminix Termite & Pest Control - Aurora

2.67(
3
)
98 years of experience

Terminix protects homes and businesses, offering residential and commercial services to customers seeking effective termite and pest control. Best of all, we offer guaranteed solutions, including a money-back guarantee for pest control and the strongest residential termite guarantee in the business for qualifying properties.

Terminix protects homes and businesses, offering residential and commercial services to customers seeking effective termite and pest control. Best of all, we offer guaranteed solutions, including a money-back guarantee for pest control and the strongest residential termite guarantee in the business for qualifying properties.

Showing 1-10 of 43
Insulation questions, answered by experts

While carpet over carpet may provide some additional insulation and soundproofing benefits, it's not as effective as other methods. Layering carpets can add a modest buffer against noise and temperature fluctuations, but it's limited compared to installing thicker carpet padding or using specialized soundproofing materials. For optimal floor insulation and soundproofing, consider alternative solutions tailored to your specific needs and budget, such as adding additional padding or soundproofing underlayments beneath the carpet.

When it comes to window coverings, cellular shades are typically known as the most energy-efficient option. Cellular shades are also known as honeycomb shades. They are made of a soft fabric and take the form of “honeycomb” cells. These cell pockets trap air in and around your windows, providing insulation.

Insulation provides additional protection for your tankless water heater. Even if the unit is installed inside the house, it’s still a good idea to wrap the unit up with insulation batts, especially if you live in cold climates. For outdoor units, you can build an insulated box around the tankless water heater for freeze protection.

Yes, many services include adding insulation for energy efficiency. Confirm with your contractor.

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

The Gillespie, IL homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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