Company lists · Data refreshed September 2026

Top 25 Insulation manufacturers based in the United States

Name: Insulation manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,303 companies tracked

RevenueBase identified 2,303 company matches for insulation manufacturers associated with the United States as of September 2026 and tracks 41,901 professional contacts across them, including 11,579 with verified work emails. Houston is the largest hub.

This list covers company matches for insulation manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

2,303Companies

41,901Contacts tracked

11,579Verified emails

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The 25 largest insulation manufacturers based in the United States

Ranked by team size

Top 25 of 2,303 company matches for insulation manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Johns Manville	Exact match	Denver, CO, United StatesHQ recorded Sep 17, 2026	5,001-10,000	2,811 contacts →
	Exact match “At Johns Manville, we build on decades of experience to manufacture commercial roofing, premium-quality insulation and a variety of engineered products for our customers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Carpenter CO	Exact match	Richmond, VA, United StatesHQ recorded Sep 17, 2026	5,001-10,000	1,936 contacts →
	Exact match “Founded in 1950, Carpenter Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Truteam	Exact match	Daytona Beach, FL, United StatesHQ recorded Sep 17, 2026	10001+	1,561 contacts →
	Exact match “TruTeam is the nation’s largest insulation installer and we also install fireplaces, gutters, garage doors and more.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Topbuild	Exact match	Daytona Beach, FL, United StatesHQ recorded Sep 17, 2026	n/a	692 contacts →
	Exact match “TopBuild is now QXO.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	SPI	Exact match	Charlotte, NC, United StatesHQ recorded Sep 17, 2026	1,001-5,000	571 contacts →
	Exact match “SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Odl, INC	Exact match	Zeeland, MI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	523 contacts →
	Exact match “Driven by continual innovation and trusted customer partnerships, ODL is a visionary building products leader delivering a full breadth of high-quality door and insulated glass…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Distribution International	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	488 contacts →
	Exact match “Distribution International (DI) a leading distributor of thermal and acoustical insulation and related supplies for maintenance and repair operations in the United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	The Okonite Company	Exact match	Ramsey, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	477 contacts →
	Exact match “The Okonite Company was founded in 1878 making it one of the original insulators of electrical wire and cable in the United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Service Partners	Exact match	Daytona Beach, FL, United StatesHQ recorded Sep 17, 2026	501-1,000	459 contacts →
	Exact match “Service Partners is a nationwide distributor of building supplies used in the construction industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Aspen Aerogels	Exact match	Northborough, MA, United StatesHQ recorded Sep 17, 2026	201-500	449 contacts →
	Exact match “Aspen is a technology leader in sustainability.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	KPS Global LLC	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	419 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Unifrax	Exact match	Tonawanda, NY, United StatesHQ recorded Sep 17, 2026	1,001-5,000	398 contacts →
	Exact match “At Unifrax, we provide innovative solutions to our customers' application problems across several different industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	STO Corp	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 2026	51-200	396 contacts →
	Exact match “Sto is an international technology leader in the design and production of innovative building materials tailored to human needs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Kingspan Insulated Panels North America	Exact match	Deland, FL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	348 contacts →
	Exact match “Who We Are: Kingspan is a trusted leader in the design, manufacture and supply of high performance building products and solutions for the global property and construction…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Duro-Last	Exact match	Saginaw, MI, United StatesHQ recorded Sep 17, 2026	501-1,000	345 contacts →
	Exact match “Known as the “World’s Best Roof®”, Duro-Last is the only single-ply manufacturer offering custom-fabrication of the entire roofing system, including custom-fabricated PVC deck…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	General Insulation Company, INC	Exact match	Medford, MA, United StatesHQ recorded Sep 17, 2026	501-1,000	342 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Janesville Acoustics	Exact match	Southfield, MI, United StatesHQ recorded Sep 17, 2026	201-500	342 contacts →
	Exact match “Janesville is a leading producer of automotive felt-based molded and die-cut products, operating as a Tier I and Tier II supplier to the automotive and transportation industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Alpha Insulation & Waterproofing	Exact match	Marietta, GA, United StatesHQ recorded Sep 17, 2026	501-1,000	335 contacts →
	Exact match “With over a quarter-century of experience in commercial insulation, waterproofing, spray fireproofing, spray foam insulation, and restoration, Alpha has served as the benchmark…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	31-W Insulation	Exact match	Goodlettsville, TN, United StatesHQ recorded Sep 17, 2026	501-1,000	288 contacts →
	Exact match “Installation of Insulation, Garage Doors and Operators, Shelving, Shower Doors, Door and Bath Hardware, Mirrors, Blinds, Electric Fireplaces, Spray Foam Insulation: Open and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Macarthur CO	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 2026	501-1,000	278 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Unique Fabricating	Exact match	Auburn Hills, MI, United StatesHQ recorded Sep 17, 2026	501-1,000	240 contacts →
	Exact match “Unique Fabricating, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Homans Associates	Exact match	Wilmington, MA, United StatesHQ recorded Sep 17, 2026	201-500	233 contacts →
	Exact match “Homans Associates is the premier distributor of HVAC Equipment, Supplies and Mechanical Insulation products in the Northeast.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	I&i Insulations, INC	Exact match	Harahan, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	228 contacts →
	Exact match “Founded in New Orleans, LA in 1970, Insulations, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	USI Building Solutions	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	213 contacts →
	Exact match “Local Knowledge, National Strength USI is a leading provider of installation and distribution services to the residential and commercial construction markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Nucor Insulated Panel Group	Exact match	Lewisville, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	209 contacts →
	Exact match “Nucor’s Insulated Panel Group consists of two insulated metal panel brands, CENTRIA, and Metl-Span.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “insulation manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 2,303 insulation manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 11,579 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Insulation manufacturers based in the United States at a glance

As of Sep 17, 2026

27.6%Verified-email coverage

18.2Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

930

11-50

896

51-200

312

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,303 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “insulation manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 11,579 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “insulation manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many insulation manufacturers are there based in the United States?

RevenueBase identified 2,303 company matches for insulation manufacturers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Johns Manville tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most insulation manufacturers?

Houston leads with 48 company records, followed by Phoenix (17) and Charlotte (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,579 professional contacts with verified work emails tracked across these 2,303 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.