Company lists · Data refreshed September 2026

Top 25 Polyisocyanurate manufacturers worldwide

Name: Polyisocyanurate manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 4,246 companies tracked

RevenueBase identified 4,246 polyisocyanurate manufacturers worldwide as of September 2026 and tracks 58,414 professional contacts across them, including 15,493 with verified work emails. The United States is the largest market and Istanbul the largest hub.

This list covers polyisocyanurate manufacturers worldwide, 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. Country and city lists for polyisocyanurate manufacturers follow the table.

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

4,246Companies

58,414Contacts tracked

15,493Verified emails

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The 25 largest polyisocyanurate manufacturers worldwide

Ranked by team size

Top 25 of 4,246 polyisocyanurate manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to polyisocyanurate 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	Knauf Insulation	Partial evidence	Vise, BelgiumHQ checked Sep 30, 2026	5,001-10,000	1,935 contacts →
	Partial evidence “Knauf Insulation is one of the world’s largest manufacturers of insulation products and solutions.” Source: RevenueBase Database · checked Sep 30, 2026
3	IKO North America	Indirect evidence	Brampton, ON, CanadaHQ checked Sep 30, 2026	1,001-5,000	1,317 contacts →
	Indirect evidence “IKO Roofing is a worldwide leader in the roofing, waterproofing, and insulation industry for residential and commercial markets.” Source: RevenueBase Database · checked Sep 30, 2026
4	Armacell	Indirect evidence	Capellen, LuxembourgHQ checked Sep 30, 2026	1,001-5,000	1,314 contacts →
	Indirect evidence “ARMACELL - DRIVING ENERGY EFFICIENCY Armacell is the inventor of flexible elastomeric foams for equipment insulation.” Source: RevenueBase Database · checked Sep 30, 2026
5	Kingspan Insulation	Partial evidence	Leominster, United StatesHQ checked Sep 30, 2026	1,001-5,000	955 contacts →
	Partial evidence “Kingspan Insulation is the industry leading manufacturer of innovative insulation solutions, which help create a more sustainable and energy efficient built environment.” Source: RevenueBase Database · checked Sep 30, 2026
6	Lloyd Insulations India Limited	Indirect evidence	New Delhi, IndiaHQ checked Sep 30, 2026	1,001-5,000	868 contacts →
	Indirect evidence “Lloyd Insulation is one of India’s leading companies offering end to end industry solutions that help create a more sustainable and energy-efficient built environment.” Source: RevenueBase Database · checked Sep 30, 2026
7	Recticel	Indirect evidence	Brussels, BelgiumHQ checked Sep 30, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Recticel Group is a leading insulation company with headquarters in Belgium and operations in eight countries across Europa and the US.” Source: RevenueBase Database · checked Sep 30, 2026
8	Topbuild	Indirect evidence	Daytona Beach, FL, United StatesHQ checked Sep 30, 2026	n/a	692 contacts →
	Indirect evidence “TopBuild is now QXO.” Source: RevenueBase Database · checked Sep 30, 2026
9	Ursa By Etex	Partial evidence	Madrid, SpainHQ checked Sep 30, 2026	1,001-5,000	605 contacts →
	Partial evidence “URSA is a company dedicated to the manufacture and commercialization of thermal and acoustic insulation materials oriented towards sustainability and energy efficiency in…” Source: RevenueBase Database · checked Sep 30, 2026
10	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
11	Distribution International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	488 contacts →
	Indirect 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 30, 2026
12	RGC Group Uratex Philippines	Partial evidence	Muntinlupa, PhilippinesHQ checked Sep 30, 2026	1,001-5,000	442 contacts →
	Partial evidence “RGC Foam Group is today’s largest manufacturer of commercial and automotive polyurethane foam products in the country.” Source: RevenueBase Database · checked Sep 30, 2026
13	Kingspan Insulated Panels North America	Partial evidence	Deland, FL, United StatesHQ checked Sep 30, 2026	1,001-5,000	348 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
14	BCI	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 30, 2026	501-1,000	344 contacts →
	Indirect evidence “Baalbaki Chemical Industries (BCI) is a leading polyurethane systems and polyurethane raw material supplier in the Middle East with production facilities in UAE, Egypt, Turkiye…” Source: RevenueBase Database · checked Sep 30, 2026
15	General Insulation Company, INC	Indirect evidence	Medford, MA, United StatesHQ checked Sep 30, 2026	501-1,000	342 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
16	Alpha Insulation & Waterproofing	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 30, 2026	501-1,000	335 contacts →
	Indirect 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 30, 2026
17	Encon & Nevill Long	Indirect evidence	Wetherby, United KingdomHQ checked Sep 30, 2026	501-1,000	328 contacts →
	Indirect evidence “Insulation, drywall, ceilings, construction products, external facades, flooring, partitioning, passive fire protection: whatever your project, Encon has the product range…” Source: RevenueBase Database · checked Sep 30, 2026
18	Macarthur CO	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 30, 2026	501-1,000	278 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
19	Vencorex	Indirect evidence	Saint-priest, FranceHQ checked Sep 30, 2026	501-1,000	273 contacts →
	Indirect evidence “Vencorex is a world leader of aliphatic isocyanates (HDI, IPDI) and their derivatives.” Source: RevenueBase Database · checked Sep 30, 2026
20	Thévenin Officiel	Indirect evidence	Saint Cyr En Val, FranceHQ checked Sep 30, 2026	201-500	251 contacts →
	Indirect evidence “Fondée en 1974, Thévenin SA s’est construite autour de valeurs fortes : proximité, écoute, courage, ambition, organisation, esprit d’entreprendre.” Source: RevenueBase Database · checked Sep 30, 2026
21	Sekisui Alveo	Indirect evidence	Adligenswil, SwitzerlandHQ checked Sep 30, 2026	201-500	235 contacts →
	Indirect evidence “Sekisui Alveo AG, with head office in Adligenswil, Switzerland, develops and produces extruded and cross-linked polyolefin foams used in Adhesive Coating, Automotive, Construction…” Source: RevenueBase Database · checked Sep 30, 2026
22	Isopan	Partial evidence	Trevenzuolo Verona, ItalyHQ checked Sep 30, 2026	201-500	215 contacts →
	Partial evidence “Isopan, part of the Joint Venture between MANNI and Marcegaglia, is a leading manufacturer worldwide of insulated metal panels for walls and roofs.” Source: RevenueBase Database · checked Sep 30, 2026
23	Nucor Insulated Panel Group	Indirect evidence	Lewisville, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	209 contacts →
	Indirect evidence “Nucor’s Insulated Panel Group consists of two insulated metal panel brands, CENTRIA, and Metl-Span.” Source: RevenueBase Database · checked Sep 30, 2026
24	Kingspan Unidek	Indirect evidence	Gemert, NetherlandsHQ checked Sep 30, 2026	10001+	209 contacts →
	Indirect evidence “Kingspan Unidek is a supplier of innovative solutions for fast and efficient construction and insulation.” Source: RevenueBase Database · checked Sep 30, 2026
25	Synthesia Technology Group	Partial evidence	Castellbisbal Cataluna, SpainHQ checked Sep 30, 2026	201-500	191 contacts →
	Partial evidence “Company specialized in the manufacture and commercialization of chemical products, polyester polyols and polyurethane systems for thermal and acoustic insulation and diverse…” 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: polyisocyanurate 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 polyisocyanurate manufacturers.
Partial evidence: Its own public description names part of polyisocyanurate manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name polyisocyanurate 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 4,246 polyisocyanurate manufacturers worldwide

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Polyisocyanurate manufacturers worldwide at a glance

As of Sep 30, 2026

26.5%Verified-email coverage

13.8Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Istanbul

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,564

11-50

1,519

51-200

684

201-500

276

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 polyisocyanurate 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.
Coverage: Every country. Country and city lists for polyisocyanurate manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “polyisocyanurate 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 polyisocyanurate 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 polyisocyanurate manufacturers, and records with no verified work email.
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, 15,493 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.

Polyisocyanurate manufacturers by location

26 lists · largest first

Every Polyisocyanurate manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Polyisocyanurate manufacturers based in Istanbul, Türkiye47

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 polyisocyanurate 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 polyisocyanurate manufacturers are there worldwide?

RevenueBase identified 4,246 polyisocyanurate manufacturers worldwide 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 country has the most polyisocyanurate manufacturers?

The United States leads with 863 companies, followed by Türkiye (214) and France (203). Every polyisocyanurate manufacturers list by country and city is linked on this page.

Which city has the most polyisocyanurate manufacturers?

Istanbul leads with 47 headquartered companies, followed by Houston (18) and Ahmedabad (16).

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 15,493 verified decision-maker contacts tracked across these 4,246 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.