Insulation Contractors · Charleston, SC/Updated June 13, 2026
The 9 Best Insulation Contractors in Charleston, SC
Insulation is critical for comfort in Charleston's humid climate. Our rankings highlight top contractors to help you make an informed choice.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent10 companies evaluated
cover story
★ Editor's ChoiceNew Leaf Sprayfoam
96Score
Latest update · June 13, 2026: Initial ranking published. 10 Charleston-metro insulation contractors businesses evaluated, top 9 ranked by Vetted Score.
In Charleston, SC, insulation contractors play a crucial role in maintaining comfortable indoor environments, especially given the region's humid subtropical climate. With a competitive market featuring ten evaluated providers, the options can feel overwhelming. We've ranked the top nine based on their Vetted Scores, considering their customer reviews and overall service quality.
The insulation sector here is still developing, with most businesses having fewer than 50 reviews. This means trust levels are forming, and choosing a contractor with a solid reputation is vital. Our list reflects a range of options, from high-rated providers with a history of satisfied clients to promising newcomers aiming to establish themselves.
10insulation contractors evaluated in Charleston
4.68average rating across the field
95customer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
Homeowners seeking effective insulation at a competitive price
Methodology
How we evaluated all 10 insulation contractors.
To evaluate insulation contractors in Charleston, we analyzed a total of ten businesses, focusing on their customer ratings, review counts, and the overall reliability of their service. Our rankings are based on a transparent scoring system, ensuring that no company pays for placement or preferential treatment.
We refresh our evaluations monthly to capture the most current performance metrics. This approach allows us to provide you with up-to-date information on each contractor's standing in the market, helping you make a well-informed decision.
The Vetted Score: six weighted factors
Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%
Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.
With a perfect rating of 5 stars on 10 reviews, New Leaf Sprayfoam receives high praise for its professionalism and quality of work. Customers appreciate the thoroughness of their insulation installations and the team's expertise in spray foam technology. They are particularly noted for their responsiveness and customer service. However, with only 10 reviews, there is limited data to assess long-term reliability.
Pros
Professional team
High-quality installations
Responsive customer service
Cons
Limited review base
Best forHomeowners seeking top-notch spray foam insulation
USA Insulation of Charleston holds a strong rating of 4.9 stars from 11 reviews, with clients praising their value for money and efficient service. Many highlight the significant energy savings they experienced after installation. While the feedback is overwhelmingly positive, the slightly smaller review count compared to top competitors may leave some potential customers cautious.
Pros
Great value for money
Efficient service
Energy-saving solutions
Cons
Smaller review base than top competitor
Best forBudget-conscious homeowners looking for effective insulation
Affordable Spray Foam has a solid rating of 4.7 stars based on 15 reviews, making it the most reviewed option in Charleston. Customers commend their affordability and the quality of their work. They also appreciate the knowledgeable staff who help guide insulation choices. However, some reviews mention occasional scheduling issues that may affect project timelines.
Pros
Affordable pricing
Knowledgeable staff
Quality work
Cons
Occasional scheduling issues
Best forHomeowners wanting a balance of cost and quality
Palmetto Spray Foam Insulation has a rating of 4.7 stars from 11 reviews. Customers appreciate their prompt service and professional demeanor. They are particularly noted for their attention to detail during the installation process. However, the limited number of reviews may make some potential clients hesitant to choose them. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is clients needing quick and professional insulation services. It serves Charleston, SC, with $1,200 to $2,700 pricing, and the honest trade-offs are limited reviews.
Pros
Prompt service
Professional demeanor
Attention to detail
Cons
Limited reviews
Best forClients needing quick and professional insulation services
IBP Charleston has a solid rating of 4.5 stars from 21 reviews. Many customers praise the thoroughness of their work and the variety of insulation options they offer. However, mixed feedback on customer service has been noted, suggesting that experiences may vary. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is homeowners looking for a wide range of insulation choices. It serves Charleston, SC, with $1,000 to $2,800 pricing, and the honest trade-offs are mixed customer service feedback.
Pros
Variety of insulation options
Thorough work
Cons
Mixed customer service feedback
Best forHomeowners looking for a wide range of insulation choices
Atlantic Spray Foam Charleston holds a rating of 4.5 stars based on 8 reviews. Customers mention the quality of the spray foam installation and the professionalism of the crew. However, the limited number of reviews may raise concerns about the reliability of their service. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is clients seeking quality spray foam insulation. It serves Charleston, SC, with $1,200 to $2,600 pricing, and the honest trade-offs are limited review count.
Pros
Quality installations
Professional crew
Cons
Limited review count
Best forClients seeking quality spray foam insulation
Easy Way Insulation has a rating of 4.4 stars from 11 reviews. Customers appreciate their straightforward approach and efficiency in completing projects. However, some feedback indicates that follow-up communication could be improved. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is homeowners wanting a simple and efficient insulation process. It serves Charleston, SC, with $1,000 to $2,500 pricing, and the honest trade-offs are follow-up communication issues.
Pros
Straightforward approach
Efficient service
Cons
Follow-up communication issues
Best forHomeowners wanting a simple and efficient insulation process
Thermolators - Spray Foam Insulation has a perfect rating of 5 stars, but only 1 review. The review praises their promptness and quality work. However, the extremely limited review base makes it hard to assess their overall reliability and consistency. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is clients wanting a potentially strong option but with little data. It serves Charleston, SC, with $1,200 to $2,500 pricing, and the honest trade-offs are very limited review base.
Pros
Perfect rating on a single review
Quality work
Cons
Very limited review base
Best forClients wanting a potentially strong option but with little data
Insulate Carolina has a rating of 4.4 stars from 7 reviews. Customers note the effectiveness of their insulation and competitive pricing. However, the small number of reviews raises questions about their overall service consistency and reputation. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is homeowners seeking effective insulation at a competitive price. It serves Charleston, SC, with $1,000 to $2,400 pricing, and the honest trade-offs are very limited review base.
Pros
Effective insulation
Competitive pricing
Cons
Very limited review base
Best forHomeowners seeking effective insulation at a competitive price
How to choose an insulation contractor in Charleston
When selecting an insulation contractor, consider factors like service area, response times, and state licensing. Each contractor may have different specialties and availability, which can impact your project's success.
Check for local licensing and insurance
Ensure the contractor is licensed to operate in South Carolina and has adequate insurance coverage to protect you from liability.
Assess response times and customer service
A quick response can indicate a contractor's reliability. Reach out with questions to gauge their customer service approach.
Look for specialized services
Some contractors may offer unique insulation types or techniques. Determine what best fits your home's needs.
What it costs
What insulation costs in Charleston
The cost of insulation services in Charleston can vary based on the type of insulation and the specifics of your project. Here’s a breakdown of what to expect.
Spray foam insulation$1.50 to $3.00 per square foot, depending on the thickness and application method.
Fiberglass insulation$0.50 to $1.50 per square foot, often used for attics and walls.
Cellulose insulation$0.75 to $2.00 per square foot, an eco-friendly option for existing homes.
Radiant barrier insulation$0.75 to $1.25 per square foot, effective in reducing heat transfer in attics.
Frequently asked questions
How much does insulation installation cost in Charleston?
Prices for insulation installation in Charleston typically range from $1,500 to $3,500 depending on the size of your home and the type of insulation used.
What types of insulation are available in Charleston?
In Charleston, you can find various types of insulation, including spray foam, fiberglass, and cellulose, with spray foam being particularly popular due to its energy efficiency.
How often is this ranking updated?
We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.
Our verdict
For most Charleston homeowners: <strong>New Leaf Sprayfoam</strong>
If you want the best overall service and results, New Leaf Sprayfoam is the way to go. They lead with a perfect 5-star rating on 10 reviews, showing consistent customer satisfaction. For those who seek a close second, USA Insulation of Charleston offers nearly as impressive service with a 4.9 rating on 11 reviews. If you're on a tighter budget but still want quality, Affordable Spray Foam at a 4.7 rating on 15 reviews is a solid choice.
Cityvetted
