Company lists · Data refreshed September 2026
Top 25 Glass wool manufacturers worldwide
RevenueBase identified 2,410 glass wool manufacturers worldwide as of September 2026 and tracks 47,776 professional contacts across them, including 13,407 with verified work emails. The United States is the largest market and Istanbul the largest hub.
This list covers glass wool 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 glass wool 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 glass wool manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,158 contacts → | ||||
Indirect evidence “Everyone sees opportunity differently.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,632 contacts → | ||||
Indirect 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. | |||||
| 3 | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,059 contacts → | ||||
Indirect evidence “SIG is a leading pan-European provider of specialist construction and insulation products.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 692 contacts → | ||||
Indirect evidence “TopBuild is now QXO.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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. | |||||
| 11 | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 302 contacts → | ||||
Indirect evidence “Wego Systembaustoffe GmbH ist mit dem Bereich Wärme, Kälte, Schall- und Brandschutz mit der Sparte VTI (Vertrieb Technischer Isolier- und Dämmstoffe) ein Tochterunternehmen der…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 243 contacts → | ||||
Partial evidence “Jushi Group is one of the world’s largest fiberglass manufacturers With many production bases in Tongxiang, Zhejiang, Jiujiang, Jiangxi, Chengdu, Sichuan, Huaian, Jiangsu, Suez…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 175 contacts → | ||||
Indirect evidence “Solutions d'isolation à hautes performances thermiques, acoustiques et d'étanchéité” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 174 contacts → | ||||
Indirect evidence “Pladur® -Yesos Ibéricos S.A.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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. | |||||
| 22 | 163 contacts → | ||||
Indirect evidence “La sinergia entre nuestras 3 plantas productivas nos convierte en un fabricante lider en sistemas de aislamiento acústico de espumados, componentes estructurales e interiores de…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 158 contacts → | ||||
Partial evidence “Siderise is a global expert in the design, manufacture, and supply of high-performance passive fire protection solutions for the building envelope.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 157 contacts → | ||||
Partial evidence “We are a world-leading manufacturer of high-temperature insulation tmax is the specialist in the design and manufacture of thermal and acoustic insulation systems for all…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 157 contacts → | ||||
Indirect evidence “A Isoeste Construtivos Isotérmicos se orgulha de ser líder em tecnologia na área de produtos com isolação térmica.” 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: glass wool 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 glass wool manufacturers.
- Partial evidence
- Its own public description names part of glass wool manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name glass wool 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 2,410 glass wool manufacturers worldwide
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Glass wool 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 glass wool 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 glass wool manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “glass wool 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 glass wool 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 glass wool 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, 13,407 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.
Glass wool manufacturers by location
17 lists · largest firstEvery Glass wool manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Glass wool manufacturers based in the United States219
- Glass wool manufacturers based in Italy146
- Glass wool manufacturers based in India137
- Glass wool manufacturers based in Türkiye134
- Glass wool manufacturers based in the United Kingdom131
- Glass wool manufacturers based in Germany117
- Glass wool manufacturers based in France96
- Glass wool manufacturers based in the Netherlands86
- Glass wool manufacturers based in Brazil74
- Glass wool manufacturers based in Spain74
- Glass wool manufacturers based in Australia70
- Glass wool manufacturers based in Poland57
- Glass wool manufacturers based in Canada49
- Glass wool manufacturers based in Belgium47
- Glass wool manufacturers based in Switzerland38
- Glass wool manufacturers based in Austria29
- Glass wool manufacturers based in Portugal25
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 glass wool 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 glass wool manufacturers are there worldwide?
RevenueBase identified 2,410 glass wool 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?
KNAUF, headquartered in Iphofen, tops this list with the largest team on record.
Which country has the most glass wool manufacturers?
The United States leads with 219 companies, followed by Italy (146) and India (137). Every glass wool manufacturers list by country and city is linked on this page.
Which city has the most glass wool manufacturers?
Istanbul leads with 30 headquartered companies, followed by Ankara (13) and London (12).
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 13,407 verified decision-maker contacts tracked across these 2,410 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.