Insulation Contractors · Greenville, SC/Updated June 13, 2026
The Best Insulation Contractors in Greenville, SC
From energy efficiency to crawlspace encapsulation, these insulation contractors excel in their services and customer satisfaction.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent8 companies evaluated
cover story
★ Editor's ChoiceKoala Insulation of Greenville
96Score
Latest update · June 13, 2026: Initial ranking published. 8 Greenville-metro insulation contractors businesses evaluated, top 8 ranked by Vetted Score.
Insulation contractors play a vital role in maintaining energy efficiency and comfort in homes throughout Greenville. With the right insulation, homeowners can save on energy bills while ensuring a cozy living environment. Choosing a reliable contractor can make all the difference in achieving optimal results.
To compile this list, we evaluated eight insulation contractors in the Greenville metro area based on customer reviews, overall ratings, and service offerings. Our goal was to highlight those that consistently deliver quality work and exceptional customer service.
8insulation contractors evaluated in Greenville
4.75average rating across the field
650customer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
Alpha Spray Foam Insulation & Crawlspace Encapsulation boasts a perfect 5-star rating from 24 reviews, highlighting their expertise in foam insulation and crawlspace projects.
We assessed each contractor's reputation based on their online ratings and the volume of reviews. Our analysis focused on customer feedback regarding workmanship, professionalism, and overall satisfaction. Importantly, no business pays for placement in our rankings, ensuring an unbiased evaluation.
This ranking is refreshed monthly to reflect the latest review data and market changes. We aim to provide the most accurate and up-to-date information for homeowners seeking insulation services in Greenville.
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 an impressive rating of 4.9 from 488 reviews, Koala Insulation of Greenville stands out for its commitment to quality and customer satisfaction. Reviewers frequently praise their professionalism and efficiency during insulation projects. They are especially noted for their thorough assessments and tailored solutions. However, their busy schedule may lead to longer wait times for appointments.
Pros
High customer satisfaction
Tailored insulation solutions
Expert installation
Cons
Potential wait times for service
Higher pricing than some competitors
Best forQuality insulation solutions and customer service
Alpha Spray Foam Insulation & Crawlspace Encapsulation boasts a perfect 5-star rating from 24 reviews, highlighting their expertise in foam insulation and crawlspace projects. Customers appreciate their prompt service and knowledgeable staff. They excel at providing cost-effective solutions for energy efficiency. However, their limited review count makes them a promising but unproven option for larger projects.
Comfort Shield Insulation has a solid rating of 4.8 from 40 reviews, with many praising their thoroughness and reliability. Customers often note their attention to detail during installation projects. They are best known for their effective insulation solutions that enhance home comfort. A caveat is that their availability may be limited during peak seasons due to high demand.
Greenville Precision holds a perfect 5-star rating from 20 reviews, indicating their strong customer satisfaction. Reviewers commend their fast and efficient service, particularly for insulation projects. They are recognized for their professionalism and quick turnaround times. However, with a smaller review base, they may not yet be as established as other options.
Insulation Commandos of Greenville has a perfect rating of 5 from 14 reviews, showcasing their commitment to quality work. Customers appreciate their thoroughness and friendly service during insulation projects. They are particularly noted for their crawlspace encapsulation expertise. However, their limited review count may raise questions about their consistency over time.
Glenco Foam & Insulation also holds a perfect rating of 5 from 14 reviews, with customers praising their reliable service and knowledgeable staff. They specialize in foam insulation, providing effective solutions for energy efficiency. However, a limited review base means they may still be building a reputation in the local market.
Atwood & Son has a rating of 4.4 from 14 reviews, with customers acknowledging their decent service and commitment to customer satisfaction. They provide a range of insulation services, making them a versatile choice. However, some reviews indicate that their response times can be slower compared to competitors, which may be a drawback for urgent projects.
Pros
Decent service
Versatile insulation options
Good customer commitment
Cons
Slower response times
Mixed reviews on quality
Best forVersatile insulation services
Service areaGreenville and surrounding areas
Typical pricing$0.50 to $2.00 per square foot
8
All In One Insulation
★★★★★3.9(36 reviews)
78Score
All In One Insulation has a rating of 3.9 from 36 reviews, with customers appreciating their affordability and range of services. They are recognized for providing basic insulation solutions that fit various budgets. However, the lower rating and mixed reviews suggest that their service quality may vary, making them a less reliable option for more complex projects.
Pros
Affordable options
Wide range of services
Basic insulation solutions
Cons
Mixed service quality
Lower customer satisfaction
Best forBudget-friendly insulation services
Service areaGreenville and nearby areas
Typical pricing$0.50 to $1.50 per square foot
Before you book
How to choose an insulation contractor in Greenville
Selecting the right insulation contractor is essential for ensuring your home is energy-efficient and comfortable. Here are some key factors to consider when making your choice.
Experience and Expertise
Look for contractors with a proven track record and extensive experience in insulation installation and related services.
Customer Reviews
Check online reviews and ratings to gauge the satisfaction of previous customers and the quality of work.
Service Offerings
Consider what types of insulation services are offered, including spray foam, fiberglass, and crawlspace encapsulation.
Pricing and Estimates
Request detailed estimates to compare pricing, ensuring you understand what is included in the final cost.
What it costs
What insulation services cost in Greenville
The cost of insulation services can vary widely based on the type of insulation, the size of the area to be insulated, and the specific contractor. Below are some typical pricing tiers you might encounter in Greenville.
Spray Foam Insulation$1.50 to $3.00 per square foot, depending on the thickness and area coverage.
Fiberglass Insulation$0.50 to $2.00 per square foot, often more affordable for larger spaces.
Crawlspace Encapsulation$1,500 to $5,000 for full encapsulation, depending on the size and condition of the crawlspace.
Blown-In Insulation$1.00 to $2.50 per square foot, a popular option for attics and wall cavities.
Frequently asked questions
How much does insulation cost in Greenville?
Insulation costs in Greenville typically range from $0.50 to $3.00 per square foot, depending on the type and project scope.
What types of insulation are available?
Common types include spray foam, fiberglass, blown-in, and rigid board insulation, each with specific benefits.
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 Greenville homes: Editor's Choice Koala Insulation of Greenville
The top three insulation contractors in Greenville are Koala Insulation of Greenville, known for their exceptional service and high customer satisfaction, Alpha Spray Foam Insulation & Crawlspace Encapsulation, offering great value with a perfect rating, and Comfort Shield Insulation, praised for their reliability and thoroughness.
Cityvetted
