Insulation Contractors · Kent, WA/Updated June 13, 2026
The 10 Best Insulation Contractors in Kent, WA
Choose wisely to enhance your home's energy efficiency. Our rankings highlight the best insulation contractors in Kent based on real customer feedback.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent12 companies evaluated
cover story
★ Editor's Choice316 Insulation Auburn
96Score
Latest update · June 13, 2026: Initial ranking published. 12 Kent-metro insulation contractors businesses evaluated, top 10 ranked by Vetted Score.
Insulation is essential for maintaining a comfortable home in Kent, where seasonal temperature swings can be significant. Proper insulation not only enhances energy efficiency but also reduces utility bills, making it a smart investment for homeowners.
We evaluated 12 insulation contractors in the Kent area, focusing on customer ratings and review counts. Our final list includes the top 10, ensuring you can find reliable services for your insulation needs.
12insulation contractors evaluated in Kent
4.81average rating across the field
1.6Kcustomer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
To create our rankings, we analyzed customer reviews and ratings from various platforms, considering both the quality and quantity of feedback. We prioritize transparency, so you can trust that no business paid for placement on our list.
We refresh our evaluations monthly to reflect the latest customer experiences and market trends. This approach helps maintain a current and accurate ranking of insulation contractors in Kent.
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.
Rated 5 stars from 324 reviews, 316 Insulation Auburn is lauded for its exceptional customer service and efficient installation processes. Customers frequently highlight the professionalism and expertise of the team. This company is best for those seeking reliable and high-quality insulation work. However, their availability may be limited due to high demand.
With a rating of 4.9 from 998 reviews, Attic Projects excels in customer satisfaction and thorough insulation solutions. Reviewers often mention the thoroughness of their inspections and effectiveness of their work. They are ideal for homeowners wanting extensive attic insulation solutions. Still, their large volume of clients may lead to longer wait times for service.
Green Attic holds a rating of 4.9 with 115 reviews, praised for its eco-friendly insulation materials and practices. Customers appreciate the commitment to sustainability and the knowledgeable staff. This company is best for environmentally conscious homeowners looking for green insulation solutions. On the downside, their review count is still relatively low, making their reliability less proven than others.
Absolute Spray Foam Insulation Auburn is rated 4.9 based on 50 reviews, known for its effective spray foam solutions and knowledgeable technicians. Clients appreciate the quick response times and thorough installations. However, the limited number of reviews leaves some uncertainty about their long-term reliability. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is spray foam insulation. It serves Kent, WA and nearby areas, with $1,500 to $3,500 pricing, and the honest trade-offs are limited reviews and higher pricing than traditional insulation.
ACE CRAWLSPACE PRO LLC has a perfect 5-star rating from 37 reviews, specializing in crawlspace insulation and moisture control. Clients often commend their thoroughness and attention to detail. They are an excellent choice for homeowners with crawlspace concerns, though their limited review count may make some potential customers hesitant. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is crawlspace insulation and moisture control. It serves Kent, WA and surrounding regions, with $1,000 to $2,500 pricing, and the honest trade-offs are limited reviews and niche focus may not suit all homeowners.
Pros
Specializes in crawlspace work
Thorough and detail-oriented
Excellent customer service
Cons
Limited reviews
Niche focus may not suit all homeowners
Best forCrawlspace insulation and moisture control
IDIs Insulation Distributors Inc. has a rating of 4.7 based on 46 reviews, known for their wide range of insulation materials and knowledgeable staff. Customers appreciate their product variety and assistance in choosing the right insulation. However, the focus on distribution rather than installation may not meet all homeowners' needs.
Kent Insulation Solutions holds a 4.7 rating from 19 reviews, offering a variety of insulation services. Customers often mention the friendly service and quality work. However, their thin review base indicates that they are still building a reputation in the area, making them a more uncertain option for some homeowners.
Rated 4.5 from 17 reviews, Stone Insulation Service is recognized for its reliable service and quality installations. Customers appreciate their professionalism but note that their limited number of reviews makes it hard to gauge overall performance. They may be a suitable choice if you seek a smaller, local company. 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 reliable local service. It serves Kent, WA and surrounding areas, with $900 to $2,200 pricing, and the honest trade-offs are limited reviews and smaller company may have fewer resources.
Insulation Contractors of WA has a rating of 4.7 from just 7 reviews. They offer a range of insulation services but lack the extensive customer feedback that might provide reassurance to new clients. This company could be considered if you are looking for a newer business willing to offer competitive rates.
Pros
Wide range of services
Competitive pricing
Cons
Very limited reviews
Less established reputation
Best forCompetitive pricing on insulation services
Harrington Insulation is rated 5 stars from only 2 reviews, which is promising but unproven. They may provide quality insulation services, but the lack of substantial feedback makes it difficult to assess their reliability. You might consider them for specific projects if you are comfortable with their limited track record.
Pros
Perfect rating from initial reviews
Potential for quality service
Cons
Very limited review base
Uncertain reliability
Best forNiche projects with potential for quality service
Service areaKent, WA
Typical pricing$700 to $1,500
Before you book
How to choose an insulation contractor in Kent
Selecting the right insulation contractor is crucial for ensuring your home is well-protected against the elements. Here are three key questions to ask potential providers before hiring.
What types of insulation do you offer?
Understanding the materials available helps you choose the best option for your home’s needs.
Can you provide references from past clients?
Reliable contractors should be able to share feedback from previous customers to establish their credibility.
What is your warranty policy?
A solid warranty indicates a contractor's confidence in their work and provides you with extra protection.
What it costs
What insulation costs in Kent
The cost of insulation services in Kent can vary depending on the type of insulation and the size of your project. Here are four pricing tiers to consider.
Basic Insulation Installation$1,000 to $2,500 for standard materials in a small to medium home.
Spray Foam Insulation$2,500 to $5,000, depending on the area covered and the complexity of the installation.
Energy-Efficient Upgrades$3,000 to $7,000 for high-performance insulation solutions in larger homes.
Comprehensive Insulation Packages$5,000 to $10,000 for extensive projects that include multiple insulation types and air sealing.
Frequently asked questions
How much does insulation installation cost in Kent?
Most insulation installation services in Kent range from $1,500 to $3,500, depending on the size of your home and the type of insulation used.
What are the benefits of spray foam insulation?
Spray foam insulation provides excellent air sealing, energy efficiency, and moisture control, making it ideal for attics and crawl spaces.
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 Kent homes: <strong>316 Insulation Auburn</strong>
If you're looking for top-tier insulation services in Kent, 316 Insulation Auburn is your best bet. With a perfect 5-star rating from 324 reviews, their reputation speaks volumes. If you need a firm with extensive experience and a solid review base, consider Attic Projects, which has an impressive 4.9-star rating from 998 reviews, making it a strong alternative for larger projects. For eco-conscious homeowners, Green Attic is a promising option, especially if you prefer a company that specializes in sustainable insulation solutions, despite its smaller review base of 115. Each choice has its strengths, but for most situations, 316 Insulation Auburn leads the way.
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