Company lists · Data refreshed September 2026
Top 25 Rockwool insulation manufacturers worldwide
RevenueBase identified 958 rockwool insulation manufacturers worldwide as of September 2026 and tracks 19,864 professional contacts across them, including 5,666 with verified work emails. The United States is the largest market and Istanbul the largest hub.
This list covers rockwool insulation 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 rockwool insulation 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.
The 25 largest rockwool insulation manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,632 contacts → | ||||
Partial evidence “At ROCKWOOL, everything we do is based on releasing the natural power of stone to enrich modern living.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,935 contacts → | ||||
Strong evidence “Knauf Insulation is one of the world’s largest manufacturers of insulation products and solutions.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 707 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 605 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 571 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 501 contacts → | ||||
Indirect evidence “When you work with us you are making the world a better place.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 295 contacts → | ||||
Indirect evidence “Tarihçe Türkiye yalıtım sektörünün öncüsü olarak 1965 yılında kurulan İzocam A.Ş'nin Gebze'deki ilk fabrikası 1967 yılında camyünü üretimine başlayarak faaliyete geçmiştir.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 255 contacts → | ||||
Indirect evidence “Nous révélons les bienfaits de la roche, ressource naturelle abondante pour relever les enjeux planétaires.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 172 contacts → | ||||
Indirect evidence “KIMMCO-Isover, is a joint-venture between the International Leader in Construction Products and which considered one of the largest, privately owned companies in the Gulf region…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 158 contacts → | ||||
Partial evidence “Saint-Gobain India – Insulation Business, as part of the global Saint-Gobain Group, carries a legacy woven from innovation and purpose.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 150 contacts → | ||||
Partial evidence “Jesteśmy częścią globalnej Grupy ROCKWOOL – lidera w produkcji innowacyjnych rozwiązań z wełny skalnej.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 148 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | 147 contacts → | ||||
Strong evidence “Fletcher Insulation stands as a leading Australian manufacturer, distributor, and technical support provider for the building construction industry in insulation.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 145 contacts → | ||||
Indirect evidence “Glavagruppen is a Norwegian industrial company with head office in Askim, plants in Askim and Stjørdal, and central office for administration, sales and marketing in Oslo.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 141 contacts → | ||||
Strong evidence “JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 140 contacts → | ||||
Indirect evidence “1985 yılında taahhüt faaliyetleriyle ticaret hayatına başlayan ve 1996 yılında üretici kimliğine kavuşarak, yapı ve teknik yalıtım olmak üzere 2 ana kategoride üretim yapan ODE…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 128 contacts → | ||||
Indirect evidence “Svensktillverkad isolering sedan mer än 90 år Mer än nittio procent av det isolermaterial som Isover levererar inom Sverige produceras i fabriken i skånska Billesholm, där vi…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 120 contacts → | ||||
Strong evidence “Silvercote, a Service Partners company, manufactures high-quality metal building insulation products customized to project specifications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 118 contacts → | ||||
Partial evidence “Die DEUTSCHE ROCKWOOL bietet Dämmlösungen aus nichtbrennbarer Steinwolle für die Dämmung von Gebäudehülle, Innenausbau und Gebäudetechnik an.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 117 contacts → | ||||
Indirect evidence “For over 25 years, our products have helped to create comfortable and beautiful spaces that are as impressive now as the day they were unveiled.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 112 contacts → | ||||
Partial evidence “GlassRock Insulation Company is a member of Citadel Capital, inaugurated in Egypt since 2008 and located in the Sadat Free Zone Area, at an equal distance from Cairo and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 112 contacts → | ||||
Indirect evidence “Knauf es una multinacional alemana, líder mundial en la fabricación de placas de yeso laminado y productos para la construcción en seco y uno de los principales fabricantes de…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 108 contacts → | ||||
Indirect evidence “Eryap Group and Trade Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 104 contacts → | ||||
Indirect evidence “A Rockfibras desde 1960 fabrica isolantes térmicos e acústicos em Lã de Rocha THERMAX® e Silicato de cálcio ROCK-SIL®.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
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: rockwool insulation 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 rockwool insulation manufacturers.
- Partial evidence
- Its own public description names part of rockwool insulation manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name rockwool insulation 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 958 rockwool insulation manufacturers worldwide
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Rockwool insulation manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
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 rockwool insulation 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 rockwool insulation manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “rockwool insulation 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 rockwool insulation 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 rockwool insulation 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, 5,666 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.
Rockwool insulation manufacturers by location
7 lists · largest firstEvery Rockwool insulation manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Rockwool insulation manufacturers based in the United States77
- Rockwool insulation manufacturers based in India74
- Rockwool insulation manufacturers based in the United Kingdom40
- Rockwool insulation manufacturers based in Italy38
- Rockwool insulation manufacturers based in France37
- Rockwool insulation manufacturers based in Germany34
- Rockwool insulation manufacturers based in the Netherlands27
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 rockwool insulation 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 rockwool insulation manufacturers are there worldwide?
RevenueBase identified 958 rockwool insulation 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?
Rockwool Group, headquartered in Hedehusene, tops this list with the largest team on record.
Which country has the most rockwool insulation manufacturers?
The United States leads with 77 companies, followed by India (74) and the United Kingdom (40). Every rockwool insulation manufacturers list by country and city is linked on this page.
Which city has the most rockwool insulation manufacturers?
Istanbul leads with 14 headquartered companies, followed by London (6) and Karachi (5).
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 5,666 verified decision-maker contacts tracked across these 958 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.