Company lists · Data refreshed September 2026

Top 25 Expanded polystyrene foam manufacturers based in the United States

Name: Expanded polystyrene foam 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 30, 2026 380 companies tracked

RevenueBase identified 380 expanded polystyrene foam manufacturers headquartered in the United States as of September 2026 and tracks 8,608 professional contacts across them, including 2,237 with verified work emails. Houston is the largest hub.

This list covers expanded polystyrene foam manufacturers 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 30, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

380Companies

8,608Contacts tracked

2,237Verified emails

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The 25 largest expanded polystyrene foam manufacturers based in the United States

Ranked by team size

Top 25 of 380 expanded polystyrene foam manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to expanded polystyrene foam manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Carpenter CO	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,936 contacts →
	Indirect evidence “Founded in 1950, Carpenter Co.” Source: RevenueBase Database · checked Sep 30, 2026
2	SPI	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 30, 2026	1,001-5,000	571 contacts →
	Indirect 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 30, 2026
3	Future Foam, INC	Partial evidence	Council Bluffs, IA, United StatesHQ checked Sep 30, 2026	1,001-5,000	290 contacts →
	Partial evidence “Future Foam is a foam producer, OEM supplier and consumer retail company.” Source: RevenueBase Database · checked Sep 30, 2026
4	American Excelsior Company	Partial evidence	Arlington, TX, United StatesHQ checked Sep 30, 2026	201-500	157 contacts →
	Partial evidence “American Excelsior has thrived as a leader in the flexible foam, erosion control, and excelsior wood fiber industries since With 8 locations and multiple manufacturing plants…” Source: RevenueBase Database · checked Sep 30, 2026
5	Insulfoam	Partial evidence	Puyallup, WA, United StatesHQ checked Sep 30, 2026	501-1,000	149 contacts →
	Partial evidence “Insulfoam, a division of Carlisle Construction Materials, is the largest manufacutrer of block molded Expanded Polysytrene (EPS) products in North America.” Source: RevenueBase Database · checked Sep 30, 2026
6	Greenfiber	Partial evidence	Charlotte, United StatesHQ checked Sep 30, 2026	201-500	148 contacts →
	Partial evidence “Established in and headquartered in Charlotte, N.C, Greenfiber is the largest manufacturer of cellulose insulation and fire and sound products.” Source: RevenueBase Database · checked Sep 30, 2026
7	Nomaco	Partial evidence	Zebulon, NC, United StatesHQ checked Sep 30, 2026	51-200	143 contacts →
	Partial evidence “Nomaco is a recognized leader in the design and extrusion of performance engineered foam products and components for a wide range of markets including construction, home…” Source: RevenueBase Database · checked Sep 30, 2026
8	Johns Manville Industrial Insulation	Partial evidence	Denver, CO, United StatesHQ checked Sep 30, 2026	201-500	141 contacts →
	Partial evidence “JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026
9	K-Flex USA	Partial evidence	Youngsville, NC, United StatesHQ checked Sep 30, 2026	201-500	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 30, 2026
10	General Plastics Mfg. CO	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 30, 2026	51-200	128 contacts →
	Indirect evidence “General Plastics Manufacturing Company - Where Great Ideas Take Shape - has been a leading innovator in the plastics industry for over 80 years.” Source: RevenueBase Database · checked Sep 30, 2026
11	Coastal	Partial evidence	East Windsor, NJ, United StatesHQ checked Sep 30, 2026	51-200	121 contacts →
	Partial 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 30, 2026
12	Silvercote	Partial evidence	Greenville, SC, United StatesHQ checked Sep 30, 2026	51-200	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 30, 2026
13	Ivex Protective Packaging	Strong evidence	Sidney, OH, United StatesHQ checked Sep 30, 2026	1,001-5,000	98 contacts →
	Strong evidence “Protective Packaging Company - We manufacture PE rolled foam, plank foam and bubble in addition to stocking bubble/kraft mailers.” Source: RevenueBase Database · checked Sep 30, 2026
14	SWD	Partial evidence	Mesa, AZ, United StatesHQ checked Sep 30, 2026	51-200	94 contacts →
	Partial evidence “SWD is a leading manufacturer of construction materials providing state of the art solutions to the industry.” Source: RevenueBase Database · checked Sep 30, 2026
15	Drew Foam Companies, INC	Strong evidence	Monticello, AR, United StatesHQ checked Sep 30, 2026	501-1,000	93 contacts →
	Strong evidence “Drew Foam has been molding and fabricating EPS (Expanded Polystyrene) since 1965.” Source: RevenueBase Database · checked Sep 30, 2026
16	Plymouth Foam, An Altor Company	Indirect evidence	Plymouth, WI, United StatesHQ checked Sep 30, 2026	51-200	89 contacts →
	Indirect evidence “Altor Solutions® is a dynamic, engineering-driven company whose goal is to design and produce superior products that help customers solve their needs for Packaging, Insulation and…” Source: RevenueBase Database · checked Sep 30, 2026
17	Epsilyte	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 30, 2026	201-500	87 contacts →
	Indirect evidence “Epsilyte is one of North America’s leading producers of advanced insulative materials.” Source: RevenueBase Database · checked Sep 30, 2026
18	Rmax, A Sika Brand	Indirect evidence	Lewisville, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	81 contacts →
	Indirect evidence “Since 1978, Rmax has been manufacturing high-quality polyiso insulation products and providing engineered solutions for enhanced energy efficiency.” Source: RevenueBase Database · checked Sep 30, 2026
19	Sekisui Voltek, LLC	Partial evidence	Coldwater, MI, United StatesHQ checked Sep 30, 2026	51-200	77 contacts →
	Partial evidence “SEKISUI Voltek, founded in 1969, is a North American leader in closed-cell, cross-linked polyolefin foam.” Source: RevenueBase Database · checked Sep 30, 2026
20	HFP	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	70 contacts →
	Partial evidence “HFP is an innovative company providing foam plastics solutions into a variety of market applications.” Source: RevenueBase Database · checked Sep 30, 2026
21	Progressive Foam Technologies, INC	Strong evidence	Beach City, OH, United StatesHQ checked Sep 30, 2026	51-200	69 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
22	Huntington Foam LLC	Strong evidence	Greer, SC, United StatesHQ checked Sep 30, 2026	201-500	65 contacts →
	Strong evidence “Huntington Foam is a custom shape molder and fabricator of various expanded plastic materials.” Source: RevenueBase Database · checked Sep 30, 2026
23	Hunter Panels	Partial evidence	Portland, ME, United StatesHQ checked Sep 30, 2026	51-200	56 contacts →
	Partial evidence “Hunter Panels manufactures a full line of polyiso insulating products for both roof and wall applications.” Source: RevenueBase Database · checked Sep 30, 2026
24	Aeroflex USA	Partial evidence	Sweetwater, TN, United StatesHQ checked Sep 30, 2026	51-200	55 contacts →
	Partial evidence “Aeroflex USA manufactures the AEROFLEX® brand of EPDM closed-cell elastomeric mechanical insulation for building mechanical systems such as HVAC duct liner/wrap, piping, VRF…” Source: RevenueBase Database · checked Sep 30, 2026
25	American Converters INC	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 30, 2026	51-200	51 contacts →
	Strong evidence “Founded in 1976, Amcon is the Midwest’s premier fabricator of foam for industrial manufacturers.” Source: RevenueBase Database · checked Sep 30, 2026

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: expanded polystyrene foam manufacturers. 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 expanded polystyrene foam manufacturers.
Partial evidence: Its own public description names part of expanded polystyrene foam manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name expanded polystyrene foam manufacturers. 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 380 expanded polystyrene foam manufacturers based in the United States

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Expanded polystyrene foam manufacturers based in the United States at a glance

As of Sep 30, 2026

26.0%Verified-email coverage

22.7Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

130

11-50

134

51-200

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 380 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 expanded polystyrene foam manufacturers, 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 “expanded polystyrene foam manufacturers”. 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 expanded polystyrene foam manufacturers), 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 expanded polystyrene foam manufacturers, 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, 2,237 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 30, 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.

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 expanded polystyrene foam manufacturers, 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 expanded polystyrene foam manufacturers are there based in the United States?

RevenueBase identified 380 expanded polystyrene foam manufacturers 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?

Carpenter CO, headquartered in Richmond, tops this list with the largest team on record.

Which city has the most expanded polystyrene foam manufacturers?

Houston leads with 11 headquartered companies, followed by Arlington (7) and Oklahoma City (7).

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 2,237 verified decision-maker contacts tracked across these 380 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 30, 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.