Company lists · Data refreshed September 2026

Top 25 Bio-based insulation companies based in Spain

Name: Bio-based insulation companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 166 companies tracked

RevenueBase identified 166 bio-based insulation companies headquartered in Spain as of September 2026 and tracks 2,072 professional contacts across them, including 385 with verified work emails. Barcelona is the largest hub.

This list covers bio-based insulation companies headquartered in Spain, 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 19, 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 19, 2026 86% judged on-target in blind review

166Companies

2,072Contacts tracked

385Verified emails

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The 25 largest bio-based insulation companies based in Spain

Ranked by team size

Top 25 of 166 bio-based insulation companies based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to bio-based insulation companies: 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	Ursa By Etex	Partial evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
2	Synthesia Technology Group	Partial evidence	Castellbisbal Cataluna, SpainHQ checked Sep 19, 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 19, 2026
3	Isolana	Indirect evidence	L'hospitalet De Llobregat, SpainHQ checked Sep 19, 2026	201-500	117 contacts →
	Indirect evidence “es una de las empresas líderes en el mercado español especializada en soluciones de aislamiento térmico, acústico y eficiencia energética para la construcción.” Source: RevenueBase Database · checked Sep 19, 2026
4	Knauf Ibérica	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	201-500	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 19, 2026
5	Rockwool Peninsular	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	201-500	74 contacts →
	Indirect evidence “Liberamos la energía natural de la roca para enriquecer la vida moderna" ROCKWOOL Group es una compañía industrial especializada y líder en los mercados de los aislamientos, los…” Source: RevenueBase Database · checked Sep 19, 2026
6	Atefrisa	Indirect evidence	Bilbao, SpainHQ checked Sep 19, 2026	201-500	67 contacts →
	Indirect evidence “Atefrisa es una empresa especializada en soluciones de aislamientos térmicos y acústicos, desarrollando proyectos industriales para los clientes más exigentes de sectores como…” Source: RevenueBase Database · checked Sep 19, 2026
7	Huurre Iberica	Partial evidence	Cassà De La Selva, SpainHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial evidence “Industrial insulating panels for efficient and sustainable buildings” Source: RevenueBase Database · checked Sep 19, 2026
8	AIT Group	Indirect evidence	Montcada I Reixac, SpainHQ checked Sep 19, 2026	51-200	32 contacts →
	Indirect evidence “AIT es una compañía sostenible que cumple con los estándares más avanzados en medio ambiente, dedicada a la fabricación de materiales para el aislamiento acústico y absorbentes de…” Source: RevenueBase Database · checked Sep 19, 2026
9	Thermogreen	Indirect evidence	Noblejas, SpainHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Thermogreen fabrica y comercializa poliestireno extruido (XPS) para su uso en aislamiento térmico, el cual contribuye a una construcción sostenible y energéticamente eficiente…” Source: RevenueBase Database · checked Sep 19, 2026
10	Honext	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “HONEXT is an innovative Barcelona-based company manufacturing certified Circular by design, flame-retardant, non-toxic boards for a sustainable and healthy built environment.” Source: RevenueBase Database · checked Sep 19, 2026
11	Armacell Iberia	Indirect evidence	Esclanyà-begur, SpainHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “Como inventora de espuma flexible para el aislamiento de instalaciones y proveedor líder de espumas técnicas, Armacell desarrolla soluciones innovadoras y seguras de aislamiento…” Source: RevenueBase Database · checked Sep 19, 2026
12	Bur2000 S.A	Indirect evidence	Gavà, SpainHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Especialistas en la fabricación y distribución de aislamientos térmicos, acústicos, y anti impacto.” Source: RevenueBase Database · checked Sep 19, 2026
13	Geopannel	Indirect evidence	Logroño, SpainHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “En ARI® GEOPANNEL® fabricamos desde 1944 tejidos sin tejer.” Source: RevenueBase Database · checked Sep 19, 2026
14	Tableros Folgado, S.A	Indirect evidence	Aldaya, SpainHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Tableros Folgado pairs a long experience in the wood working.” Source: RevenueBase Database · checked Sep 19, 2026
15	Baumit España	Indirect evidence	Móstoles, SpainHQ checked Sep 19, 2026	1,001-5,000	13 contacts →
	Indirect evidence “Empresa fabricante y distribuidora de Baumit Sistemas de Aislamiento Térmico Exterior (SATE), con más de 40 años de experiencia en el mercado europeo.” Source: RevenueBase Database · checked Sep 19, 2026
16	Isopartner España S.L.U	Partial evidence	Sevilla, SpainHQ checked Sep 19, 2026	51-200	12 contacts →
	Partial evidence “ISOPARTNER Insulation Solution España S.L.U.” Source: RevenueBase Database · checked Sep 19, 2026
17	Asfaltex	Indirect evidence	San Cugat Del Valles, SpainHQ checked Sep 19, 2026	51-200	11 contacts →
	Indirect evidence “Desde 1932, ASFALTEX es sinónimo de prestigio y excelencia.” Source: RevenueBase Database · checked Sep 19, 2026
18	Terpolar Aïllaments S.L	Indirect evidence	Torelló, SpainHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Terpolar Aislamientos S.L.U.” Source: RevenueBase Database · checked Sep 19, 2026
19	Diaterm Distribucions	Indirect evidence	Sant Quirze Del Vallés, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Hace ya más de treinta y cinco años que nos dedicamos a la distribución y asesoramiento de aislamientos para la construcción, la industria y la rehabilitación de edificios.” Source: RevenueBase Database · checked Sep 19, 2026
20	LA Instaladora	Indirect evidence	Hospitalet De Llobregat, SpainHQ checked Sep 19, 2026	51-200	7 contacts →
	Indirect evidence “La Instaladora es una empresa referente en el mercado de aislamientos, destacando tanto en el ámbito industrial como en la edificación.” Source: RevenueBase Database · checked Sep 19, 2026
21	Calorifugados Isotecnic, S.L	Indirect evidence	Barberà Del Vallès, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Fabricación e instalación de calorifugado Industrial.” Source: RevenueBase Database · checked Sep 19, 2026
22	Prefaes	Indirect evidence	Cerdá, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “PREFAES Soluciones Constructivas nace hace 50 años en Cerdà, un pequeño pueblo de València (España), cuando un grupo de profesionales del sector crearon una fábrica de escayola.” Source: RevenueBase Database · checked Sep 19, 2026
23	Arelux TOP Chemicals	Indirect evidence	Cuarte De Huerva, SpainHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Materiales de construcción y eficiencia energética que transforman la vida de tus clientes y te facilitan el trabajo: consigue productos con prestaciones únicas, sin esperas y con…” Source: RevenueBase Database · checked Sep 19, 2026
24	Grupo Flexicel	Partial evidence	Esparreguera, SpainHQ checked Sep 19, 2026	51-200	5 contacts →
	Partial evidence “Grupo Flexicel offers customized solutions for thermal, acoustic and watertight insulation.” Source: RevenueBase Database · checked Sep 19, 2026
25	Serrasoluciones S.L	Indirect evidence	Terrassa, SpainHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “SERRASOLUCIONES SL is a consumer goods company based out of NEPTUNO, 81, TERRASSA, Spain.” Source: RevenueBase Database · checked Sep 19, 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: bio-based insulation companies. 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 bio-based insulation companies.
Partial evidence: Its own public description names part of bio-based insulation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name bio-based insulation companies. 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 166 bio-based insulation companies based in Spain

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Bio-based insulation companies based in Spain at a glance

As of Sep 19, 2026

18.6%Verified-email coverage

12.5Average contacts per company

11-50Median size (employees)

7.2%Largest-city concentration · Barcelona

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 166 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 bio-based insulation companies, 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 Spain whose own description of what they do matches “bio-based insulation companies”. 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 bio-based insulation companies), 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 bio-based insulation companies, and records with no verified work email. Companies headquartered outside Spain 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, 385 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 19, 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 bio-based insulation companies, 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 bio-based insulation companies are there based in Spain?

RevenueBase identified 166 bio-based insulation companies headquartered in Spain 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?

Ursa By Etex, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most bio-based insulation companies?

Barcelona leads with 12 headquartered companies, followed by Madrid (12) and Tarragona (4).

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 385 verified decision-maker contacts tracked across these 166 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 19, 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.