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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon126
    Verified insulation services reviews

Top-Rated Insulation pros in Mount Pleasant - 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 Mount Pleasant, 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

48 neighbors recently requested a quote
Avatar for Carolina Energy Conservation, LLC
Carolina Energy Conservation, LLC
4.7(
96
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+2 more

Serving Mount Pleasant, SC and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I called Carolina Energy Conservation to have some new insulation put in my attic. The estimater came out within a few days of the phone call, and I received a detailed e-mail about what to expect. Matt gave me a good run down of what I needed to make my upstairs floor more comfortable. He called ahead of time, was on time, and was very professional. The estimate was for 4,000 board ft of insulation, 800 sq ft of radiant barrier installed, and an attic tent/hatch. Total cost was about $1600. They asked for a down payment of 30% up front, which I paid. Matt told me I would recieve a call to schedule the work within 1-2 business days. That never happened. After 1 week I called and spoke with Mary, who informed me their office manager who does schedules was out sick the previous week. She assured me he would call me back to setup a time for the work to be done. That never happened either. Fast forward another week. I called a 2nd time, and finally got an apointment setup for the following week. The two guys they sent to do the job were friendly and professional. After a few hours they let me inspect the work, and it was completed to my satisfaction. I normally have to set my AC to 73-74 in the summer to keep my upstairs comfortable, and the HVAC turns on quite often. Now I can set it to 76-77 and it remains comfortable, and the HVAC doesn't run as often. All in all I am happy with the overall experience, guess they just got hung up on scheduling."
Sprayfoam Insulation
Solatube in Charleston
Sprayfoam Insulation
Solatube in Charleston
Detached Panel

+17

Response time1 day
18 neighbors recently requested a quote
Recommended by92%of homeowners
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 Mount Pleasant, 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

409 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 Mount Pleasant, 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!

30 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 Mount Pleasant, SC and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"Brian,the sales rep, was very professional. Their crew worked under extremely hot conditions from the sun and the heat generated by the foam application. Despite the conditions, they completed our large attic in just over 5 hours. I would recommend this company to anyone looking for this product in their home."
 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 38
Insulation FAQs, answered by experts

For new homeowners in Mount Pleasant, start with a professional energy audit to identify insulation gaps and air leaks. Upgrading attic insulation and sealing around windows and doors can significantly improve energy efficiency. Consider adding vapor barriers or encapsulating crawl spaces to manage humidity. Insulating and sealing ductwork, especially in unconditioned areas, is important for maintaining indoor comfort and protecting against the region’s frequent humidity and coastal weather.

Helpful?

In Mount Pleasant, create a seasonal insulation inspection routine by checking attic and crawl space insulation every spring and fall. In spring, look for signs of moisture intrusion from heavy rains and check for pest activity common to coastal areas. In fall, inspect for air leaks around attic hatches and ensure proper attic ventilation for humidity control. Regularly review energy efficiency by tracking utility bills and feeling for drafts in main living areas.

Helpful?

In Mount Pleasant, the longevity of insulation projects depends on effective moisture management, proper air sealing, and choosing insulation materials suited for high humidity and salt air. Using closed-cell spray foam or moisture-resistant batts helps prevent mold and pest issues. Ensuring complete coverage in attics and crawl spaces, maintaining correct R-values, and providing adequate ventilation are key for long-term energy efficiency and durability in this coastal climate.

Helpful?

Mount Pleasant homeowners can address small insulation issues by sealing minor gaps with weather-resistant caulk, gently fluffing compressed attic insulation, and clearing blocked soffit vents to improve airflow. Always wear protective gear, including gloves, a mask, and long sleeves, to guard against fiberglass and allergens. Work during cooler hours, and if you notice persistent dampness, visible mold, or electrical wiring concerns, contact a local insulation professional promptly.

Helpful?

In Mount Pleasant, insulation projects may reveal hidden issues such as moisture damage in attics or crawl spaces, pest infestations unique to coastal environments, or the need for improved attic ventilation. Additional expenses can arise from structural repairs or upgrading insulation to meet local energy efficiency standards. Permit and inspection requirements for larger projects are common. Planning for these possibilities and working with contractors experienced in Mount Pleasant’s climate can help minimize surprises.

Helpful?

The Mount Pleasant, SC homeowners’ guide to insulation services

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