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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon140
    Verified insulation services reviews

Top-Rated Insulation pros in Charleston - Updated Nov 2026

Avatar for USA Insulation of Charleston
USA Insulation of Charleston
5.0(
5
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Charleston, SC and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

USA Insulation has been providing homeowners with energy efficient insulation since 1985. Our trained, professional installers, service Charleston County, Berkley County & Dorchester County. We pride our company on reliability, great communication, integrity and quality work. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Please contact us today to set up a free consultation

51 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
410
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Charleston, SC and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

Elevate your home with Home Genius Exteriors, setting the standard in Charleston by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It's time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+53

438 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Lookout Pest Control- Charleston
Lookout Pest Control- Charleston
New to Angi
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Charleston, SC and surrounding areas

Approved (Corporate)

In business since 1983

Free estimates

Credit card accepted

For more than 40 years, Lookout Pest Control has been a regionally-recognized provider of general pest, termite, wildlife and encapsulation services in the north Georgia and Chattanooga, TN markets. These 40 years have earned Lookout a reputation of excellence and integrity in the community. Today, Lookout is a growing family of pest control companies throughout the Southeast into AL, SC, NC, and KY -- we're slated to become a top pest control company in the US while maintaining our personal touch, local connections. Lookout is a champion for creating a safe home…we're Always on the Lookout!

36 neighbors recently requested a quote
Avatar for Energy One America, LLC
Energy One America, LLC
3.9(
69
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Charleston, SC and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"They were quick to respond and schedule. I was in the RE with my husband without phone service at the time of my initial appointment but he did the evaluation and we scheduled the work the next day. The wwork was neat and efficient."
 Open Cell Spray Foam Insulation
  Open Cell Spray Foam Insulation
Closed Cell Spray Foam Insulation
 Closed Cell Spray Foam Insulation
 Energy One America Trucks

+8

Recommended by95%of homeowners
Showing 1-10 of 45
Insulation FAQs, answered by experts

Upgrading insulation in Charleston often increases home value and attracts buyers seeking lower utility bills and better comfort. Homes with modern attic insulation and moisture barriers stand out in the local market, especially given Charleston’s humidity. Highlighting recent insulation service and energy efficiency improvements during showings can help your property appeal to environmentally conscious buyers.

Helpful?

In Charleston, you’ll find insulation contractors who focus on spray foam, blown-in, and batt insulation, as well as professionals specializing in attic insulation and crawl space encapsulation. Some general contractors offer dedicated insulation teams for larger renovations. There are also energy efficiency consultants who can recommend the best insulation service for Charleston’s humid climate and help you maximize available local incentives.

Helpful?

Charleston homes with inconsistent indoor temperatures, visible gaps in attic insulation, or frequent moisture issues are strong candidates for insulation service. If your home was built before modern energy codes or you notice condensation on windows, it’s worth inspecting crawl spaces and attic insulation. A local pro can use thermal imaging to identify hidden problem areas unique to Charleston’s climate.

Helpful?

Charleston’s coastal weather means insulation projects should use moisture-resistant materials and vapor barriers to prevent mold. Schedule work outside hurricane season for fewer delays. Local codes require minimum R-values for attic insulation, and homes in historic districts may need special permits. Flood-prone areas require additional protection, and termite-resistant insulation is highly recommended for Charleston homes.

Helpful?

In Charleston, unexpected costs can arise if attic insulation reveals hidden moisture damage or pest infestations that need addressing. Upgrading ventilation or adding a moisture barrier is often necessary in humid homes. Historic properties may require custom insulation solutions. You might also need to adjust HVAC ductwork or address air leaks discovered during the insulation service, which can add to the project’s scope.

Helpful?

The Charleston, SC homeowners’ guide to insulation services

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