Company lists · Data refreshed October 2026

Top 25 Fire resistant & retardant insulation suppliers based in the United States

Name: Fire resistant & retardant insulation suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 25, 2026 901 companies tracked

RevenueBase identified 901 company matches for fire resistant & retardant insulation suppliers associated with the United States as of October 2026 and tracks 13,395 professional contacts across them, including 3,692 with verified work emails. Houston is the largest hub.

This list covers company matches for fire resistant & retardant insulation suppliers 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 25, 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 25, 2026 How this list was built

901Companies

13,395Contacts tracked

3,692Verified emails

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The 25 largest fire resistant & retardant insulation suppliers based in the United States

Ranked by team size

Top 25 of 901 company matches for fire resistant & retardant insulation suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 25, 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	Topbuild	Exact match	Daytona Beach, FL, United StatesHQ recorded Oct 25, 2026	n/a	652 contacts →
	Exact match “TopBuild is now QXO.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
2	SPI	Exact match	Charlotte, NC, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
3	Distribution International	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	484 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 · Oct 25, 2026 · View company records in RevenueBase
4	Alpha Insulation & Waterproofing	Exact match	Marietta, GA, United StatesHQ recorded Oct 25, 2026	501-1,000	344 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 · Oct 25, 2026 · View company records in RevenueBase
5	General Insulation Company, INC	Exact match	Medford, MA, United StatesHQ recorded Oct 25, 2026	501-1,000	342 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
6	Macarthur CO	Exact match	St. Paul, MN, United StatesHQ recorded Oct 25, 2026	501-1,000	279 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
7	I&i Insulations, INC	Exact match	Harahan, LA, United StatesHQ recorded Oct 25, 2026	1,001-5,000	229 contacts →
	Exact match “Founded in New Orleans, LA in 1970, Insulations, Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
8	NUTEC	Exact match	Huntersville, NC, United StatesHQ recorded Oct 25, 2026	201-500	219 contacts →
	Exact match “NUTEC is a leading manufacturer of superior quality, high-temperature insulation and fire protection products.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
9	Specified Technologies Inc. STI Firestop	Exact match	Somerville, NJ, United StatesHQ recorded Oct 25, 2026	201-500	194 contacts →
	Exact match “For over 30 years, our team has worked hand in hand with the construction industry to create simple solutions to complex firestopping problems.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
10	Interior Supply, INC	Exact match	Columbus, OH, United StatesHQ recorded Oct 25, 2026	201-500	187 contacts →
	Exact match “Interior Supply Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
11	Rolling Plains Construction	Exact match	Apache Junction, AZ, United StatesHQ recorded Oct 25, 2026	201-500	163 contacts →
	Exact match “Rolling Plains Construction was incorporated in Colorado in September of 1984.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
12	USA Insulation	Exact match	Cleveland, OH, United StatesHQ recorded Oct 25, 2026	51-200	160 contacts →
	Exact match “Established in 1977 and incorporated in 1985, USA Insulation has saved thousands of customers millions of dollars on their heating and air conditioning bills.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
13	Greenfiber	Exact match	Charlotte, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
14	Johns Manville Industrial Insulation	Exact match	Denver, CO, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
15	K-Flex USA	Exact match	Youngsville, NC, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
16	Isolatek International	Exact match	Stanhope, NJ, United StatesHQ recorded Oct 25, 2026	51-200	141 contacts →
	Exact match “Isolatek, originally established in 1875 as a manufacturer of mineral wool, is today a global leader in the development, manufacture, and distribution of proprietary Passive Fire…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
17	Coastal	Exact match	East Windsor, NJ, United StatesHQ recorded Oct 25, 2026	51-200	129 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
18	Silvercote	Exact match	Greenville, SC, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
19	Chaparral Company	Exact match	Waco, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	107 contacts →
	Exact match “Chaparral Insulation has proudly served the mechanical insulation industry for more than 30 years.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
20	SWD	Exact match	Mesa, AZ, United StatesHQ recorded Oct 25, 2026	51-200	100 contacts →
	Exact match “SWD is a leading manufacturer of construction materials providing state of the art solutions to the industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
21	Epsilyte	Exact match	The Woodlands, TX, United StatesHQ recorded Oct 25, 2026	201-500	92 contacts →
	Exact match “Epsilyte is one of North America’s leading producers of advanced insulative materials.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
22	CQ Insulation	Exact match	Tampa, FL, United StatesHQ recorded Oct 25, 2026	51-200	90 contacts →
	Exact match “Headquartered in Tampa, Florida, CQ Insulation, Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
23	OJ Insulation	Exact match	Azusa, CA, United StatesHQ recorded Oct 25, 2026	201-500	76 contacts →
	Exact match “From the start of every project to its completion, we dedicate ourselves to providing you with the superior service that reflects our quality and professionalism.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
24	Progressive Foam Technologies, INC	Exact match	Beach City, OH, United StatesHQ recorded Oct 25, 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 25, 2026 · View company records in RevenueBase
25	Therm-All	Exact match	Westlake, OH, United StatesHQ recorded Oct 25, 2026	51-200	71 contacts →
	Exact match “Therm-All has been at the forefront of metal building insulation solutions since 1981.” Recorded in the RevenueBase company graph · Oct 25, 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 “fire resistant & retardant insulation suppliers”. 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 901 fire resistant & retardant insulation suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 3,692 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fire resistant & retardant insulation suppliers based in the United States at a glance

As of Oct 25, 2026

27.6%Verified-email coverage

14.9Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · Houston

Oct 25, 2026Page data refreshed

Companies by employee count

1-10

331

11-50

382

51-200

130

201-500

501-1,000

1,001-5,000

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 901 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 “fire resistant & retardant insulation suppliers” 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 3,692 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 25, 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.

Fire resistant & retardant insulation suppliers by metro

Fire resistant & retardant insulation suppliers in Houston27

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 “fire resistant & retardant insulation suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fire resistant & retardant insulation suppliers are there based in the United States?

RevenueBase identified 901 company matches for fire resistant & retardant insulation suppliers 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?

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

Which city has the most fire resistant & retardant insulation suppliers?

Houston leads with 27 company records, followed by Columbus (8) and Phoenix (8).

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 3,692 professional contacts with verified work emails tracked across these 901 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 25, 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.