Company lists · Data refreshed September 2026
Top 25 Tunnel waterproofing contractors worldwide
RevenueBase identified 1,891 tunnel waterproofing contractors worldwide as of September 2026 and tracks 17,341 professional contacts across them, including 4,108 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers tunnel waterproofing contractors 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 29, 2026. Country and city lists for tunnel waterproofing contractors 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 tunnel waterproofing contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 669 contacts → | ||||
Partial evidence “Founded in 1894, Ghella is a major Italian global force recognized for its excellence in the construction of large-scale public infrastructure and expertise in the use of Tunnel…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 587 contacts → | ||||
Indirect evidence “ETANDEX is France’s leading independent specialty construction company Turnover : 64 million Euros in 2013 Employees : 350 Branches : 10 ETANDEX was initially created as a…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 487 contacts → | ||||
Strong evidence “Joseph Gallagher is one of the UK's leading Civil Engineering & Tunnelling sub-contractors that has significantly grown over the past 45 years into an international business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 395 contacts → | ||||
Strong evidence “Nina Percept Pvt Ltd is proudly India’s largest Turnkey Waterproofing Specialist Contractors providing solutions to many of the most complex and challenging construction projects…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 326 contacts → | ||||
Strong evidence “SAK Construction is one of the largest privately held pipeline rehabilitation and tunneling contractors in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 311 contacts → | ||||
Indirect evidence “Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 296 contacts → | ||||
Partial evidence “Water Seal is the number one solution provider for Waterproofing & Insulation Services in UAE.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 288 contacts → | ||||
Strong evidence “Founded in 1918, RAM Construction Services is the oldest and most experienced waterproofing and restoration contractor in the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 252 contacts → | ||||
Partial evidence “General contracting company specialising in the construction of tunnels and microtunnels, BESSAC has been building underground structures for 50 years to serve a variety of…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 233 contacts → | ||||
Indirect evidence “A construtora gmaia é uma empresa do Grupo Priner especializada em impermeabilização, proteção, reforço e recuperação de estruturas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 201 contacts → | ||||
Partial evidence “TG Tunnelling is a tunnelling company based out of 2 Athenaeum Rd, London N20 9AE, United Kingdom.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 187 contacts → | ||||
Partial evidence “Europea de Hincas Teledirigidas, S.A, EUROHINCA, is a company established in 1996, dedicated to the execution of tunnels using trenchless technology by the methods of pipe jacking…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 166 contacts → | ||||
Indirect evidence “GEODATA is a multi-disciplinary company with an Italian origin and a global footprint, specialized in providing high-quality consultancy services and solutions for the development…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 133 contacts → | ||||
Partial evidence “At Beacon Waterproofing, we’re the largest, nationwide distributor of commercial sealants and specialty waterproofing solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 132 contacts → | ||||
Indirect evidence “Hauff-Technik is a leading manufacturer of sealing systems for cables, pipes, and building entries – serving applications in private residential construction as well as in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 126 contacts → | ||||
Partial evidence “For more than 50 years, proprietary Xypex Crystalline Technology has set an international standard of excellence in concrete waterproofing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 124 contacts → | ||||
Indirect evidence “Somos uma empresa de engenharia que empreende com tecnologia e excelência em compromisso com nossos clientes e com o desenvolvimento da sociedade.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 107 contacts → | ||||
Indirect evidence “Arsan, Yapısal ve Sismik Mesnetler, Genleşme Derzleri, Boru Contaları ve Tünel Segment Contaları konusunda sektörünün lider kuruluşudur.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 100 contacts → | ||||
Indirect evidence “Delivering Solutions with Integrity, Reliability and Excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 99 contacts → | ||||
Partial evidence “We are a Turkish Construction Company that specialises in Tunnelling, Mining and other associated underground works.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 91 contacts → | ||||
Partial evidence “Duron Ontario was founded in 1959 and provides a range of construction specialties including structural rehabilitation, waterproofing, mastic, concrete finishing and specialized…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 81 contacts → | ||||
Indirect evidence “J.W.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 80 contacts → | ||||
Indirect evidence “Atuação em obras de proteção e recuperação de estruturas, restauro de patrimônio histórico e reconversão de edifícios e equipamentos urbanos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 77 contacts → | ||||
Partial evidence “Jay Dee Contractors (Jay Dee) is a family-owned company and a leader in heavy underground construction serving clients across the United States and Canada since 1965.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 73 contacts → | ||||
Indirect evidence “Soletanche, światowy lider w geotechnice i fundamentowaniu, działa w 60 krajach jako część grupy Soletanche Freyssinet (Grupa VINCI).” Source: RevenueBase Database · checked Sep 29, 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: tunnel 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 tunnel waterproofing contractors.
- Partial evidence
- Its own public description names part of tunnel waterproofing contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tunnel 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 1,891 tunnel waterproofing contractors worldwide
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Tunnel waterproofing contractors worldwide at a glance
As of Sep 29, 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 tunnel 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.
- Coverage
- Every country. Country and city lists for tunnel waterproofing contractors are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “tunnel 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 tunnel 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 tunnel waterproofing contractors, 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, 4,108 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 29, 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.
Tunnel waterproofing contractors by location
13 lists · largest firstEvery Tunnel waterproofing contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Tunnel waterproofing contractors based in the United States219
- Tunnel waterproofing contractors based in India162
- Tunnel waterproofing contractors based in Brazil145
- Tunnel waterproofing contractors based in France124
- Tunnel waterproofing contractors based in Germany87
- Tunnel waterproofing contractors based in the United Kingdom87
- Tunnel waterproofing contractors based in Australia80
- Tunnel waterproofing contractors based in Canada59
- Tunnel waterproofing contractors based in the United Arab Emirates58
- Tunnel waterproofing contractors based in Switzerland53
- Tunnel waterproofing contractors based in Italy47
- Tunnel waterproofing contractors based in the Netherlands28
- Tunnel waterproofing contractors based in New Zealand26
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 tunnel 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 tunnel waterproofing contractors are there worldwide?
RevenueBase identified 1,891 tunnel waterproofing contractors 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?
Ghella, headquartered in Roma, tops this list with the largest team on record.
Which country has the most tunnel waterproofing contractors?
The United States leads with 219 companies, followed by India (162) and Brazil (145). Every tunnel waterproofing contractors list by country and city is linked on this page.
Which city has the most tunnel waterproofing contractors?
Sao Paulo leads with 36 headquartered companies, followed by Dubai (22) and Auckland (16).
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 4,108 verified decision-maker contacts tracked across these 1,891 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 29, 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.