Company lists · Data refreshed September 2026

Top 25 Insulation contractors based in Switzerland

Name: Insulation contractors based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 171 companies tracked

RevenueBase identified 171 insulation contractors headquartered in Switzerland as of September 2026 and tracks 1,077 professional contacts across them, including 353 with verified work emails. Basel is the largest hub.

This list covers insulation contractors headquartered in Switzerland, 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 17, 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 17, 2026 86% judged on-target in blind review

171Companies

1,077Contacts tracked

353Verified emails

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The 25 largest insulation contractors based in Switzerland

Ranked by team size

Top 25 of 171 insulation contractors based in Switzerland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insulation contractors: 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	Swisspor AG	Indirect evidence	Steinhausen, SwitzerlandHQ checked Sep 17, 2026	1,001-5,000	126 contacts →
	Indirect evidence “Die swisspor AG ist die Nr.” Source: RevenueBase Database · checked Sep 17, 2026
2	AGI AG FÜR Isolierungen	Indirect evidence	Dällikon, SwitzerlandHQ checked Sep 17, 2026	201-500	72 contacts →
	Indirect evidence “Als marktführendes Schweizer Unternehmen bieten wir Ihnen innovative Technik und Beratung à discrétion rund um Isolierungen und baulichen Brandschutz an.” Source: RevenueBase Database · checked Sep 17, 2026
3	Roth Gruppe AG	Indirect evidence	4563, SwitzerlandHQ checked Sep 17, 2026	201-500	52 contacts →
	Indirect evidence “ROTH GRUPPE – Isolationen.” Source: RevenueBase Database · checked Sep 17, 2026
4	Sager AG	Indirect evidence	Dürrenäsch, SwitzerlandHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “Wir dämmen.” Source: RevenueBase Database · checked Sep 17, 2026
5	GPI SA	Indirect evidence	Thônex, SwitzerlandHQ checked Sep 17, 2026	51-200	44 contacts →
	Indirect evidence “Entreprise de Gypserie - Peinture - Isolation périphérique” Source: RevenueBase Database · checked Sep 17, 2026
6	Sedelec SA	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 17, 2026	201-500	43 contacts →
	Indirect evidence “Électrotechnique à 360° Électricien à Genève depuis plus de 45 ans Experts en courant fort et courant faible, nous garantissons votre satisfaction.” Source: RevenueBase Database · checked Sep 17, 2026
7	Soprema Switzerland	Indirect evidence	Spreitenbach, SwitzerlandHQ checked Sep 17, 2026	51-200	35 contacts →
	Indirect evidence “Soprema AG Schweiz – Ihr Partner für innovative Gebäudehüllen-Lösungen Seit über 100 Jahren steht SOPREMA für Pioniergeist und Qualität in der Baubranche.” Source: RevenueBase Database · checked Sep 17, 2026
8	Suter Gruppe	Indirect evidence	Lupfig, SwitzerlandHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “bodenständig, nachhaltig, innovativ - Die Suter Gruppe ist eine national und international tätige Gruppe in der Baunebenbranche.” Source: RevenueBase Database · checked Sep 17, 2026
9	Groupe Posse	Indirect evidence	Renens 1, SwitzerlandHQ checked Sep 17, 2026	201-500	22 contacts →
	Indirect evidence “Nos spécialistes plâtrerie, peinture et isolation vous accompagnent dans vos projets de transformation ou de neuf afin de vous proposer la meilleure solution pour vos travaux.” Source: RevenueBase Database · checked Sep 17, 2026
10	Macullo SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “Spécialiste en ferblanterie, couverture, étanchéité, isolation, maintenance et réparation de toiture, Macullo SA met ses 60 ans d’expérience et son savoir-faire global au service…” Source: RevenueBase Database · checked Sep 17, 2026
11	Greutol AG	Partial evidence	Otelfingen, SwitzerlandHQ checked Sep 17, 2026	51-200	14 contacts →
	Partial evidence “Greutol AG, headquartered in Otelfingen/ZH, is one of the leading system providers of external thermal insulation.” Source: RevenueBase Database · checked Sep 17, 2026
12	Pinta Industry	Indirect evidence	Courgenay, SwitzerlandHQ checked Sep 17, 2026	51-200	14 contacts →
	Indirect evidence “pinta industry propose des solutions d’isolation thermique & acoustique spécifiques aux différentes problématiques soulevées par ses clients” Source: RevenueBase Database · checked Sep 17, 2026
13	Issa-Sa	Indirect evidence	Vaulruz, SwitzerlandHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Fondé en 1973 à Bulle, ISSA SA est active depuis plus de 40ans dans le domaine de l’isolation technique et peut se targuer d'avoir, par son professionnalisme, mérité la confiance…” Source: RevenueBase Database · checked Sep 17, 2026
14	Sitaf SA	Indirect evidence	Davesco, SwitzerlandHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “SITAF SA, membro dell’associazione involucro svizzera, è attiva dal 1961 in ambito tetti, impermeabilizzazioni, isolamenti e protezioni antincendio con 30 collaboratori…” Source: RevenueBase Database · checked Sep 17, 2026
15	Systec Therm AG	Indirect evidence	St. Gallen, SwitzerlandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Die Systec Therm AG vertreibt schweizweit intelligente Lösungen mit Elektrowärme für die Baubranche sowie die Industrie.” Source: RevenueBase Database · checked Sep 17, 2026
16	Werner Isolations	Indirect evidence	Genève, SwitzerlandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “économie d'énergie oblige!” Source: RevenueBase Database · checked Sep 17, 2026
17	Leutwyler Elektro AG	Indirect evidence	Lupfig, SwitzerlandHQ checked Sep 17, 2026	51-200	11 contacts →
	Indirect evidence “Ihr Elektropartner für Wohn, Gewerbe- und Industriebauten.” Source: RevenueBase Database · checked Sep 17, 2026
18	Durrisol Kuster SA	Indirect evidence	Frenkendorf, SwitzerlandHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “La maison Durrisol Kuster SA est le commerce spécialisé dans les matériaux d’isolation techniques pour le bâtiment et l’industrie.” Source: RevenueBase Database · checked Sep 17, 2026
19	Bärlocher BAU AG	Indirect evidence	9016 St. Gallen, SwitzerlandHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Bärlocher Bau AG - Umbauten, Hochbau, Isolationen, Renovationen, Fassaden und Kundenmaurer” Source: RevenueBase Database · checked Sep 17, 2026
20	Iso4 AG	Indirect evidence	Chur, SwitzerlandHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “iso4 AG ist Ihr Partner für technische und Brandschutz Dämmungen” Source: RevenueBase Database · checked Sep 17, 2026
21	FG Fasogips AG	Indirect evidence	Rupperswil, SwitzerlandHQ checked Sep 17, 2026	51-200	7 contacts →
	Indirect evidence “Verputzte Aussenwärmedämmung - innere Gipserarbeiten - Trockenbauarbeiten - Zertifiziert für Fugenlose Akustikdecke - innere und äussere Malerarbeiten - Stuckaturen -…” Source: RevenueBase Database · checked Sep 17, 2026
22	Isofloc AG	Indirect evidence	Bütschwil, SwitzerlandHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Als Schweizer Marktführer für einblasbare Dämmstoffe aus nachwachsenden Rohstoffen bietet die isofloc AG umfassende Lösungen für die gewerbliche und industrielle Dämmung an.” Source: RevenueBase Database · checked Sep 17, 2026
23	Fasys Schweiz	Indirect evidence	Bassersdorf, SwitzerlandHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Baumit – eine starke Marke in der Baubranche.” Source: RevenueBase Database · checked Sep 17, 2026
24	EIIF	Partial evidence	Gland, SwitzerlandHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “The European Industrial Insulation Foundation (EiiF) has been set up to promote and establish the use of industrial insulation as a widely understood and accepted means of…” Source: RevenueBase Database · checked Sep 17, 2026
25	Isopartner Schweiz AG	Partial evidence	Busswil, SwitzerlandHQ checked Sep 17, 2026	51-200	6 contacts →
	Partial evidence “ISOPARTNER Schweiz AG - formerly Regisol AG, for over 40 years the Swiss-wide partner for the trade and production (REGOPIR HF) of technical insulation materials for heat, cold…” Source: RevenueBase Database · checked Sep 17, 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: insulation contractors. 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 insulation contractors.
Partial evidence: Its own public description names part of insulation contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insulation contractors. 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 171 insulation contractors based in Switzerland

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Insulation contractors based in Switzerland at a glance

As of Sep 17, 2026

32.8%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Basel

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 171 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 insulation contractors, 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 Switzerland whose own description of what they do matches “insulation contractors”. 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 insulation contractors), 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 insulation contractors, and records with no verified work email. Companies headquartered outside Switzerland 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, 353 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 17, 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 insulation contractors, 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 insulation contractors are there based in Switzerland?

RevenueBase identified 171 insulation contractors headquartered in Switzerland 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?

Swisspor AG, headquartered in Steinhausen, tops this list with the largest team on record.

Which city has the most insulation contractors?

Basel leads with 3 headquartered companies, followed by Gland (3) and Winterthur (3).

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 353 verified decision-maker contacts tracked across these 171 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 17, 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.