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TRUSTED BY JOHNS ISLAND, SC HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon144
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Johns Island, SC

*The Angi rating for Insulation Service companies in Johns Island, SC 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 Johns Island, SC 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 31, 2025

Find Insulation pros in Johns Island

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

Serving Johns Island, 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

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

Serving Johns Island, SC and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Very well, Very neat, personable, and efficient. Very pleased"
Sprayfoam Insulation
Solatube in Charleston
Sprayfoam Insulation
Solatube in Charleston
Detached Panel

+17

Response time1 day
15 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for Apex Home Innovations, LLC
Apex Home Innovations, LLC
4.8(
25
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Johns Island, SC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Mr. Miller, with Apex, is SUPER easy to work with and will do you good! They did an awesome job with removing and adding new insulation. They ended up going above and beyond and even doing a little extra work for me!"
Response time5 days
60 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for Barrier South
Barrier South
4.8(
15
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Johns Island, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Credit card accepted

"Barrier South did a great job re insulating my attic and crawl space under house. Jose led a crew that were very professional and skilled. I recommend Barrier South highly. Great job at competitive prices."
Attic Insulation - Open Cell - nominal 5" - R
Attic Insulation - Open Cell - nominal 5" - R
Attic Insulation - Open Cell - 10.5" - R-38
Exterior walls - open cell walls - R-13 value
Shaved flushed for sheet rock.

+4

Response time2 days
149 neighbors recently requested a quote
Recommended by21%of homeowners
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Avatar for Coastal Synergy, LLC
Coastal Synergy, LLC
4.8(
4
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Johns Island, SC and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Very nice working with them! Fair pricing and excellent service! Highly recommend!!"
Response time3 days
13 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Energy One America, LLC
Energy One America, LLC
3.9(
69
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Johns Island, SC and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"They inadvertently removed some attic insulation while working on our neighbor's ajoining home, but replaced it promptly when advised."
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
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Avatar for Advanced Spray Foam and Coatings, LLC
Advanced Spray Foam and Coatings, LLC
4.7(
21
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Johns Island, SC and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Value for the money invested was extremely high, would strongly encourage those needed spray foam insulation in their homes or businesses to contact Advanced Spray foam for a price. Great people to deal with !"
Response time2 days
Recommended by95%of homeowners
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Avatar for Eco Friendly Services
Eco Friendly Services
4.9(
31
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Johns Island, SC and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"The service technician was excellent. He was professional and immediately came and completed the work requested. The unit is working perfectly and because of this, l requested another service to have the unit cleaned. I would definitely recommend your company to anyone in need of your services. Thank you."
Beautiful installed new High Efficiency WwilMclain Evergreen Boiler
New 14 Seer Condenser with new pad and new Disconnect Box
Hi efficiency Amana heating and cooling system
Install newheating and cooling system
Remove old Boiler and install a New Boiler

+34

Recommended by96%of homeowners
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Showing 1-10 of 36
Insulation questions, answered by experts

Yes, PEX pipes should be insulated in certain situations. While insulation is not always necessary for pipes running through insulated interior or external walls, it is recommended for any pipes located in uninsulated rooms, unheated areas, or outside, especially in regions with cold winters. The primary reason is to prevent freezing. Although PEX is more resistant to cracking from freezing than other materials, repeated freezing and thawing can weaken the pipes over time, increasing the risk of a burst.

The lifespan of cellulose insulation is 20 to 30 years, on average. That said, it’s important to start checking your insulation after year 10 to check for degradation, mold, mildew, and other potential problems. Every 10 years, you should also confirm your home’s insulation is in line with updated local building codes.

Yes, crawl space insulation is worth it if installed correctly. Installing insulation in your crawl space will improve the air quality, help stabilize your home's temperature, lower your energy bills, and prevent pests from entering your home. Though you’ll pay more to install insulation initially, the savings you get from installing insulation can help offset those initial costs over time.

A radiant barrier is a form of insulation topped with a reflective material designed to keep homes cool during hotter months. It is generally considered worth the investment if you live in a hot, sunny climate, as the cost can be recouped over time through lower energy bills. Installation costs typically range from $0.10 to $1 per square foot. After installation, homeowners in warm climates may save between $7 and $15 per month, potentially reducing their electric bill by 5% to 10%. The exact savings will vary depending on your location and the type of barrier chosen.

Each of the three types of wool insulation has particular disadvantages. While their R-value is higher, they all cost more than fiberglass versions. Installing mineral wool and sheep wool requires protective gear. Because of its vulnerability to insects, chemicals are used in its production. Hemp wool is more costly to install than other types because additional tools and labor are involved.

The Johns Island, SC 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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