Company lists · Data refreshed October 2026

Top 25 Cork insulation manufacturers based in the United States

Name: Cork 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 Oct 10, 2026 134 companies tracked

RevenueBase identified 134 company matches for cork insulation manufacturers associated with the United States as of October 2026 and tracks 2,780 professional contacts across them, including 786 with verified work emails. Charlotte is the largest hub.

This list covers company matches for cork 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 October 10, 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 Oct 10, 2026 How this list was built

134Companies

2,780Contacts tracked

786Verified emails

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The 25 largest cork insulation manufacturers based in the United States

Ranked by team size

Top 25 of 134 company matches for cork insulation manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	SPI	Exact match	Charlotte, NC, United StatesHQ recorded Oct 10, 2026	1,001-5,000	529 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 · Oct 10, 2026 · View company records in RevenueBase
2	Greenfiber	Exact match	Charlotte, United StatesHQ recorded Oct 10, 2026	201-500	157 contacts →
	Exact match “Established in and headquartered in Charlotte, N.C, Greenfiber is the largest manufacturer of cellulose insulation and fire and sound products.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Johns Manville Industrial Insulation	Exact match	Denver, CO, United StatesHQ recorded Oct 10, 2026	201-500	146 contacts →
	Exact match “JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	K-Flex USA	Exact match	Youngsville, NC, United StatesHQ recorded Oct 10, 2026	201-500	146 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Silvercote	Exact match	Greenville, SC, United StatesHQ recorded Oct 10, 2026	51-200	121 contacts →
	Exact match “Silvercote, a Service Partners company, manufactures high-quality metal building insulation products customized to project specifications.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Progressive Foam Technologies, INC	Exact match	Beach City, OH, United StatesHQ recorded Oct 10, 2026	51-200	71 contacts →
	Exact match “Progressive Foam Technologies is a leading manufacturer of foam insulation products for home exterior, interior and foundation applications – and is also the inventor of insulated…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Bonded Logic, INC	Exact match	Chandler, AZ, United StatesHQ recorded Oct 10, 2026	51-200	60 contacts →
	Exact match “With over 35 years of recycling and manufacturing experience, Bonded Logic Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Applegate Insulation	Exact match	Webberville, MI, United StatesHQ recorded Oct 10, 2026	201-500	59 contacts →
	Exact match “The investment you make with Applegate Insulation today will benefit you for a lifetime.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Cleanfiber	Exact match	Buffalo, NY, United StatesHQ recorded Oct 10, 2026	11-50	51 contacts →
	Exact match “CleanFiber™ makes high-performance cellulose insulation from recycled corrugated cardboard boxes and other clean sources of high quality fiber.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	The Nelson Companies	Exact match	Lake Zurich, IL, United StatesHQ recorded Oct 10, 2026	51-200	50 contacts →
	Exact match “Founded in 1958, The Nelson Companies is a family of independently operated specialty contracting businesses serving commercial, industrial, healthcare, education, manufacturing…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Pacor INC	Exact match	Bordentown, NJ, United StatesHQ recorded Oct 10, 2026	51-200	47 contacts →
	Exact match “With fabricating facilities in New Jersey, North Carolina and Georgia, Pacor custom fabricates and distributes fiberglass, aerogel, ceramic and foam industrial insulation products…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Timberhp	Exact match	Madison, ME, United StatesHQ recorded Oct 10, 2026	51-200	46 contacts →
	Exact match “TimberHP is a privately held, Maine-based building products corporation founded in 2017 to develop and manufacture renewable, biodegradable, non toxic wood fiber insulation for…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Insul-Therm International INC	Exact match	Commerce, CA, United StatesHQ recorded Oct 10, 2026	51-200	39 contacts →
	Exact match “Insul-Therm Intl.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Shannon Global Energy Solutions	Exact match	North Tonawanda, NY, United StatesHQ recorded Oct 10, 2026	51-200	36 contacts →
	Exact match “Manufacturer's of INSULTECH Thermal Acoustic Blanket Insulation systems.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	General Coatings Manufacturing Corp	Exact match	Fresno, CA, United StatesHQ recorded Oct 10, 2026	51-200	35 contacts →
	Exact match “Over the past 25 years General Coatings Manufacturing Corp.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	BNZ Materials	Exact match	Zelienople, PA, United StatesHQ recorded Oct 10, 2026	51-200	27 contacts →
	Exact match “BNZ Materials is a world leading manufacturer of specialty industrial insulation materials with over 16 types of Insulating FireBricks available for use in applications from to…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Momper Insulation	Exact match	Fort Wayne, IN, United StatesHQ recorded Oct 10, 2026	11-50	25 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Protek Cargo, INC	Exact match	Napa, CA, United StatesHQ recorded Oct 10, 2026	51-200	24 contacts →
	Exact match “Headquartered in Napa Valley, the geographic heart of U.S.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Extol Of Ohio, INC	Exact match	Norwalk, OH, United StatesHQ recorded Oct 10, 2026	51-200	20 contacts →
	Exact match “Extol of Ohio, Inc, the leader in fabricated insulation for refrigeration in business since 1985, has long been recognized as the leader in providing fabricated insulation systems…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Structis Construction Solutions Group	Exact match	Rocky Hill, CT, United StatesHQ recorded Oct 10, 2026	51-200	20 contacts →
	Exact match “Structis is proud to offer a diverse portfolio of fireproofing, spray foam and fiberglass insulation, sound mat and gypcrete, self-leveling underlayments, and lightweight cellular…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Dittemore Insulation Contractors, INC	Exact match	Orange, CA, United StatesHQ recorded Oct 10, 2026	11-50	19 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	KMK Insulation	Exact match	North Haven, CT, United StatesHQ recorded Oct 10, 2026	1-10	19 contacts →
	Exact match “KMK Insulation provides insulation installation and insulation materials (hot and cold piping & equipment, storage tanks, boilers, fans, exhaust ducts,turbines-removable blankets…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	ABS Southeast	Exact match	New Bern, NC, United StatesHQ recorded Oct 10, 2026	201-500	18 contacts →
	Exact match “We are the leader in quality installation of all types of residential and commercial Insulation types from Fiberglass batt and blown to cellulose blown and even open and closed…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Proto Corporation	Exact match	Clearwater, FL, United StatesHQ recorded Oct 10, 2026	51-200	17 contacts →
	Exact match “Proto Corporation is a world leading manufacturer of PVC fitting covers and jacketing systems for the commercial and industrial insulation markets.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Afcat Group, INC	Exact match	Dallas, TX, United StatesHQ recorded Oct 10, 2026	11-50	14 contacts →
	Exact match “AFCAT Group Inc.” Recorded in the RevenueBase company graph · Oct 10, 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 “cork 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 134 cork insulation manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 786 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cork insulation manufacturers based in the United States at a glance

As of Oct 10, 2026

28.3%Verified-email coverage

20.7Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Charlotte

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 134 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 “cork 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 786 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 October 10, 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 “cork insulation manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 134 company matches for cork insulation manufacturers associated with the United States as of October 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?

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

Which city has the most cork insulation manufacturers?

Charlotte leads with 3 company records, followed by Denver (3) and Houston (3).

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 786 professional contacts with verified work emails tracked across these 134 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 October 10, 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.