Company lists · Data refreshed September 2026
Top 25 Insulation and air sealing companies based in the United States
RevenueBase identified 2,225 insulation and air sealing companies headquartered in the United States as of September 2026 and tracks 21,653 professional contacts across them, including 5,981 with verified work emails. Houston is the largest hub.
This list covers insulation and air sealing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest insulation and air sealing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,561 contacts → | ||||
Partial evidence “TruTeam is the nation’s largest insulation installer and we also install fireplaces, gutters, garage doors and more.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 692 contacts → | ||||
Indirect evidence “TopBuild is now QXO.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 571 contacts → | ||||
Partial evidence “SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 488 contacts → | ||||
Partial evidence “Distribution International (DI) a leading distributor of thermal and acoustical insulation and related supplies for maintenance and repair operations in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 456 contacts → | ||||
Partial evidence “Henry, a Carlisle Company, is North America’s leader in Building Envelope Systems®, managing the flow of water, vapor, air, and energy from foundation to roof to ensure…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 396 contacts → | ||||
Indirect evidence “Sto is an international technology leader in the design and production of innovative building materials tailored to human needs.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 356 contacts → | ||||
Indirect evidence “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 342 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 335 contacts → | ||||
Partial evidence “With over a quarter-century of experience in commercial insulation, waterproofing, spray fireproofing, spray foam insulation, and restoration, Alpha has served as the benchmark…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 288 contacts → | ||||
Partial evidence “Installation of Insulation, Garage Doors and Operators, Shelving, Shower Doors, Door and Bath Hardware, Mirrors, Blinds, Electric Fireplaces, Spray Foam Insulation: Open and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 231 contacts → | ||||
Partial evidence “Since 1978, Reliable Heating & Air has been serving all of Metro Atlanta's communities offering heating, cooling, plumbing and electrical services, indoor air quality, duct…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 228 contacts → | ||||
Partial evidence “Founded in New Orleans, LA in 1970, Insulations, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 215 contacts → | ||||
Indirect evidence “Aeroseal is a climate tech company on a mission - reduce the world's carbon emissions by 1 gigaton annually.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 213 contacts → | ||||
Indirect evidence “Local Knowledge, National Strength USI is a leading provider of installation and distribution services to the residential and commercial construction markets.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 193 contacts → | ||||
Indirect evidence “Founded in EDA Contractors holds an extensive portfolio and experience on the exterior envelope of commercial, institutional, and industrial buildings.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 169 contacts → | ||||
Strong evidence “Established in 1977 and incorporated in 1985, USA Insulation has saved thousands of customers millions of dollars on their heating and air conditioning bills.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 168 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 159 contacts → | ||||
Indirect evidence “For nearly a century, GSM Services has built its reputation on reliability, honesty, expert service, and high-quality workmanship.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 149 contacts → | ||||
Indirect evidence “Rolling Plains Construction was incorporated in Colorado in September of 1984.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 133 contacts → | ||||
Partial evidence “K-FLEX USA is the North American division of the IK Insulation Group, an innovative leader in flexible elastomeric foam insulation with 12 production facilities worldwide and a…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 121 contacts → | ||||
Indirect evidence “From new construction homes to the complex specialty projects we’re famous for, Coastal is ready to get to work on your building, with a team of engineers that manufactures and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 120 contacts → | ||||
Partial evidence “Silvercote, a Service Partners company, manufactures high-quality metal building insulation products customized to project specifications.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 110 contacts → | ||||
Partial evidence “Commercial Specialty Contracting - Metal Framing - Drywall - Lath and Plaster - EIFS (Exterior Insulation and Finish Systems)- Spray Applied Fireproofing - Spray Foam Insulation -…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 105 contacts → | ||||
Partial evidence “Chaparral Insulation has proudly served the mechanical insulation industry for more than 30 years.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 98 contacts → | ||||
Indirect evidence “Our mission is to deliver efficiency and improve comfort by addressing customer priorities, with expertise and simplicity, for an ultimately painless process.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: insulation and air sealing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names insulation and air sealing companies.
- Partial evidence
- Its own public description names part of insulation and air sealing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name insulation and air sealing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,225 insulation and air sealing companies based in the United States
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Insulation and air sealing companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,225 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among insulation and air sealing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “insulation and air sealing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names insulation and air sealing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among insulation and air sealing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 5,981 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Insulation and air sealing companies by metro
- Insulation and air sealing companies in Houston29
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names insulation and air sealing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many insulation and air sealing companies are there based in the United States?
RevenueBase identified 2,225 insulation and air sealing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Truteam, headquartered in Daytona Beach, tops this list with the largest team on record.
Which city has the most insulation and air sealing companies?
Houston leads with 29 headquartered companies, followed by New York (17) and Denver (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,981 verified decision-maker contacts tracked across these 2,225 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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