Company lists · Data refreshed September 2026

Top 25 Concrete waterproofing contractors based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 87 companies tracked

RevenueBase identified 87 concrete waterproofing contractors headquartered in Switzerland as of September 2026 and tracks 523 professional contacts across them, including 148 with verified work emails. Bern is the largest hub.

This list covers concrete waterproofing 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 27, 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 27, 2026 86% judged on-target in blind review

87Companies

523Contacts tracked

148Verified emails

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The 25 largest concrete waterproofing contractors based in Switzerland

Ranked by team size

Top 25 of 87 concrete waterproofing contractors based in Switzerland, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to concrete waterproofing 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	Carpi Tech	Strong evidence	Balerna, SwitzerlandHQ checked Sep 27, 2026	51-200	99 contacts →
	Strong evidence “Carpi Tech, established in 1963, is a Specialist Contractor for waterproofing geomembrane systems.” Source: RevenueBase Database · checked Sep 27, 2026
2	Renesco	Partial evidence	Moosseedorf, SwitzerlandHQ checked Sep 27, 2026	501-1,000	60 contacts →
	Partial evidence “WATERPROOFING Our specialized division for all kind of sealing operations in underground structures against pressurized and non-pressurized water.” Source: RevenueBase Database · checked Sep 27, 2026
3	Rascor	Partial evidence	Steinmaur, SwitzerlandHQ checked Sep 27, 2026	51-200	22 contacts →
	Partial evidence “RASCOR is a globally active waterproofing company.” Source: RevenueBase Database · checked Sep 27, 2026
4	Hydrojet AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “Wir haben uns auf den Schutz, Erhalt und die Instandsetzung von Stahlbetonbauten spezialisiert.” Source: RevenueBase Database · checked Sep 27, 2026
5	Blue Toro Bautenschutz AG	Indirect evidence	Fraubrunnen, SwitzerlandHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “Blue Toro Bautenschutz AG ist ein spezialisiertes Bauunternehmen.” Source: RevenueBase Database · checked Sep 27, 2026
6	Robotec AG Systembaustoffe	Indirect evidence	Birr, SwitzerlandHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “Seit 1964 sind wir Profis im Abdichten.” Source: RevenueBase Database · checked Sep 27, 2026
7	Travaux Spéciaux Biollay SA	Indirect evidence	Lonay, SwitzerlandHQ checked Sep 27, 2026	11-50	13 contacts →
	Indirect evidence “L’entreprise Travaux spéciaux Biollay SA est spécialisée dans plusieurs domaines dont : Assainissement des bétons & Protection des ouvrages : • Purge & Ragréage des bétons…” Source: RevenueBase Database · checked Sep 27, 2026
8	Bollhalder Systemabdichtungen AG	Indirect evidence	Oetwil Am See, SwitzerlandHQ checked Sep 27, 2026	51-200	13 contacts →
	Indirect evidence “Als Spezialist im Bereich der Gebäudeabdichtung, insbesondere der Abdichtungstechnik "Weisse Wanne" ist die Firma Bollhalder Systemabdichtungen AG ein starker und kompetenter…” Source: RevenueBase Database · checked Sep 27, 2026
9	Drytech Waterproofing	Partial evidence	Bedano, SwitzerlandHQ checked Sep 27, 2026	51-200	13 contacts →
	Partial evidence “Drytech has specialized in waterproofing since 1963 to guarantee architects, engineers and construction companies efficient solutions that last as long as the building, allow…” Source: RevenueBase Database · checked Sep 27, 2026
10	Waprotec AG	Indirect evidence	Widnau, SwitzerlandHQ checked Sep 27, 2026	51-200	12 contacts →
	Indirect evidence “As a construction company, waprotec ag is your reliable partner in all areas of execution and implementation of plans drawn up by planners specialising in the sealing of buildings…” Source: RevenueBase Database · checked Sep 27, 2026
11	Groupe Travaux Speciaux SA	Indirect evidence	Yverdon-les-bains, SwitzerlandHQ checked Sep 27, 2026	11-50	10 contacts →
	Indirect evidence “Exécution des travaux spéciaux dans le domaine du bâtiment, du génie civil et d’ouvrages d’art, notamment l’étanchéité et l’isolation des bâtiments, l’assainissement et le…” Source: RevenueBase Database · checked Sep 27, 2026
12	Johler Gussasphalt AG	Indirect evidence	Hunzenschwil, SwitzerlandHQ checked Sep 27, 2026	11-50	9 contacts →
	Indirect evidence “Es freut uns, Ihnen unsere Unternehmung JOHLER GUSSASPHALT AG vorstellen zu dürfen!” Source: RevenueBase Database · checked Sep 27, 2026
13	Biollay Spezialbau AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 27, 2026	11-50	9 contacts →
	Indirect evidence “Spezialisiert auf fugenlose Bodenaufbauten und –beläge Die Biollay Spezialbau AG ist Ihre Partnerin für individuelle Bodenaufbauten, Beschichtungen, Sichtböden, Hartbeton…” Source: RevenueBase Database · checked Sep 27, 2026
14	Tüscher Dach AG	Indirect evidence	Hombrechtikon, SwitzerlandHQ checked Sep 27, 2026	11-50	8 contacts →
	Indirect evidence “Menschen bei tüscherDach machen Bauten dicht!” Source: RevenueBase Database · checked Sep 27, 2026
15	Groupe BBL SA	Indirect evidence	Crissier, SwitzerlandHQ checked Sep 27, 2026	51-200	8 contacts →
	Indirect evidence “GROUPE BBL SA est disposée à vous accompagner lors de vos constructions.” Source: RevenueBase Database · checked Sep 27, 2026
16	Polyetanche SA	Indirect evidence	Hauterive, SwitzerlandHQ checked Sep 27, 2026	11-50	6 contacts →
	Indirect evidence “PolyEtanche SA répond à tous vos besoins dans le domaine de l’étanchéité!” Source: RevenueBase Database · checked Sep 27, 2026
17	Ferotekt AG	Indirect evidence	Buchrain, SwitzerlandHQ checked Sep 27, 2026	11-50	6 contacts →
	Indirect evidence “Die FEROTEKT AG, Ihr Spezialunternehmen im Dienstleistungsbereich Bautenschutz – Abdichtungen / Injektionen, Kunstharzbeläge und Flüssigkunststoffabdichtungen!” Source: RevenueBase Database · checked Sep 27, 2026
18	Drytech Swiss AG	Indirect evidence	Maienfeld, SwitzerlandHQ checked Sep 27, 2026	11-50	6 contacts →
	Indirect evidence “Für die Bauherren/-In, den Architekten/-In, den Bauingenieur/-In und den Baumeister sind wir der richtige Ansprechpartner für kosten optimierte, zukunftsweisende und…” Source: RevenueBase Database · checked Sep 27, 2026
19	Dobler-Bautenschutz AG	Indirect evidence	Schinznach-dorf, SwitzerlandHQ checked Sep 27, 2026	1-10	5 contacts →
	Indirect evidence “Die Dobler-Bautenschutz-Profis lösen Ihnen jedes Schadenproblem am und im Bau.” Source: RevenueBase Database · checked Sep 27, 2026
20	Lourejoints	Indirect evidence	Veyras, SwitzerlandHQ checked Sep 27, 2026	1-10	4 contacts →
	Indirect evidence “Lourejoints SA - Veyras - Travaux spéciaux d'étanchéité, injections, sols industriels, traitement de fissures, réfection de béton, joints.” Source: RevenueBase Database · checked Sep 27, 2026
21	Isotech Zürich AG	Indirect evidence	Weiningen, SwitzerlandHQ checked Sep 27, 2026	1-10	4 contacts →
	Indirect evidence “Seit über 60 Jahren sorgt unser Unternehmen für dichte Fugen, zuverlässigen Brandschutz und nachhaltige Abdichtungslösungen.” Source: RevenueBase Database · checked Sep 27, 2026
22	Fero-Tekt AG	Indirect evidence	Gisikon, SwitzerlandHQ checked Sep 27, 2026	11-50	3 contacts →
	Indirect evidence “Die fero-tekt ag ist 1998 als spezialunternehmen im dienstleistungsbereich bautenschutz – abdichtungen/ injektionen, kunstharzbeläge und flüssigkunststoffabdichtungen – gegründet…” Source: RevenueBase Database · checked Sep 27, 2026
23	All-San Gmbh	Indirect evidence	Bonstetten, SwitzerlandHQ checked Sep 27, 2026	1-10	3 contacts →
	Indirect evidence “Abdichtung gegen eindringendes Wasser Abdichtung gegen austretendes Wasser Betonschutz Altbausanierung” Source: RevenueBase Database · checked Sep 27, 2026
24	Abdichtungsbau Durrer	Indirect evidence	Alpnach Dorf, SwitzerlandHQ checked Sep 27, 2026	1-10	3 contacts →
	Indirect evidence “Abdichtungsbau Durrer GmbH - Wir halten dicht.” Source: RevenueBase Database · checked Sep 27, 2026
25	Serc Sàrl	Indirect evidence	Les Valettes, SwitzerlandHQ checked Sep 27, 2026	11-50	2 contacts →
	Indirect evidence “Nous sommes actifs dans les domaines de l'étanchéité - Cartons bitumés - Résines - Carbonatation - Joints/injections - Manchonnage CAD” Source: RevenueBase Database · checked Sep 27, 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: concrete waterproofing 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 concrete waterproofing contractors.
Partial evidence: Its own public description names part of concrete waterproofing contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name concrete waterproofing 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 87 concrete waterproofing contractors based in Switzerland

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Concrete waterproofing contractors based in Switzerland at a glance

As of Sep 27, 2026

28.3%Verified-email coverage

6.0Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Bern

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 87 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 concrete waterproofing 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 “concrete waterproofing 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 concrete waterproofing 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 concrete waterproofing 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, 148 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 27, 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 concrete waterproofing 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 concrete waterproofing contractors are there based in Switzerland?

RevenueBase identified 87 concrete waterproofing 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?

Carpi Tech, headquartered in Balerna, tops this list with the largest team on record.

Which city has the most concrete waterproofing contractors?

Bern leads with 2 headquartered companies, followed by Fraubrunnen (2) and Geneve (2).

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 148 verified decision-maker contacts tracked across these 87 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 27, 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.