Company lists · Data refreshed September 2026

Top 25 Tunnel waterproofing companies based in Australia

Name: Tunnel waterproofing companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 120 companies tracked

RevenueBase identified 120 tunnel waterproofing companies headquartered in Australia as of September 2026 and tracks 819 professional contacts across them, including 161 with verified work emails. Sydney is the largest hub.

This list covers tunnel waterproofing companies headquartered in Australia, 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.

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 29, 2026 86% judged on-target in blind review

120Companies

819Contacts tracked

161Verified emails

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The 25 largest tunnel waterproofing companies based in Australia

Ranked by team size

Top 25 of 120 tunnel waterproofing companies based in Australia, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to tunnel waterproofing 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	Austunnel	Indirect evidence	Lane Cove West, AustraliaHQ checked Sep 29, 2026	201-500	100 contacts →
	Indirect evidence “Delivering Solutions with Integrity, Reliability and Excellence.” Source: RevenueBase Database · checked Sep 29, 2026
2	Polyseal Group Australia	Partial evidence	St Peters, AustraliaHQ checked Sep 29, 2026	201-500	51 contacts →
	Partial evidence “Since its inception in 1989, Polyseal has remained a prominent contractor in the Australia waterproofing and remedial markets.” Source: RevenueBase Database · checked Sep 29, 2026
3	Megasealed Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	51-200	47 contacts →
	Indirect evidence “Established in 1996, Megasealed Australia™ is the pioneer in providing a unique guaranteed solution to stop leaking showers and balconies without the unnecessary cost, time loss…” Source: RevenueBase Database · checked Sep 29, 2026
4	Waterproofing Integrity	Partial evidence	Silverwater, AustraliaHQ checked Sep 29, 2026	51-200	47 contacts →
	Partial evidence “Waterproofing Integrity offers independent third-party design consultation and quality control inspection services for waterproofing systems to ensure the intended performance and…” Source: RevenueBase Database · checked Sep 29, 2026
5	CPR Services	Indirect evidence	Cheltenham, AustraliaHQ checked Sep 29, 2026	51-200	18 contacts →
	Indirect evidence “CPR Services offers concrete protection, repair and strengthening services everywhere concrete is found.” Source: RevenueBase Database · checked Sep 29, 2026
6	Durotech Industries	Partial evidence	Minto, AustraliaHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “Durotech Industries was founded in 1977, as a manufacturer and supplier of liquid membranes for the waterproofing industry.” Source: RevenueBase Database · checked Sep 29, 2026
7	Pezzimenti Tunnelbore	Partial evidence	Emu Plains, AustraliaHQ checked Sep 29, 2026	51-200	15 contacts →
	Partial evidence “Born out of the Water Industry and the installation of new Sewer and Stormwater lines, Pezzimenti Tunnelbore works in all infrastructure construction sectors in NSW, ACT…” Source: RevenueBase Database · checked Sep 29, 2026
8	Kryfix	Partial evidence	Taren Point, AustraliaHQ checked Sep 29, 2026	11-50	13 contacts →
	Partial evidence “KRYFIX is an industry leading concrete waterproofing specialist company based in Sydney.” Source: RevenueBase Database · checked Sep 29, 2026
9	Bothar Group	Partial evidence	Brisbane, AustraliaHQ checked Sep 29, 2026	501-1,000	13 contacts →
	Partial evidence “Bothar Group of Companies (‘Group’) is an international engineering solutions provider with over 30 years of cutting-edge experience in the tunnelling contracting industry.” Source: RevenueBase Database · checked Sep 29, 2026
10	Stop & Seal	Partial evidence	178 Siganto Drive Helensvale, AustraliaHQ checked Sep 29, 2026	51-200	10 contacts →
	Partial evidence “At Stop & Seal, we specialise in tailored waterproofing solutions for commercial and remedial works across Australia and worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
11	Aldig Contracting PTY LTD	Indirect evidence	Oakleigh South, AustraliaHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “Aldig specialise in design and construction of waterproof basements in Melbourne so you can build on time and on budget.” Source: RevenueBase Database · checked Sep 29, 2026
12	Projex Group	Indirect evidence	Eastgardens, AustraliaHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Projex Group provides premium quality products to the Australian market and offer an unrivalled technical support and customer service.” Source: RevenueBase Database · checked Sep 29, 2026
13	Maxcim	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	7 contacts →
	Partial evidence “Corrosion Protection, Concrete Rehabilitation, Waterproofing & Linings” Source: RevenueBase Database · checked Sep 29, 2026
14	Webb Plumbing Services	Indirect evidence	Elsternwick, AustraliaHQ checked Sep 29, 2026	11-50	7 contacts →
	Indirect evidence “Webb Plumbing Services is a construction company based out of 542 Glen Huntly Rd, Elsternwick, Victoria, Australia.” Source: RevenueBase Database · checked Sep 29, 2026
15	Simco Tunnel & Metro	Partial evidence	Seven Hills, AustraliaHQ checked Sep 29, 2026	11-50	6 contacts →
	Partial evidence “Tunnel & Metro, Engineering, Mechanical - Electrical - HVAC - Fabrication & Construction” Source: RevenueBase Database · checked Sep 29, 2026
16	Altec Building	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “Remedial Building & Waterproofing Experts” Source: RevenueBase Database · checked Sep 29, 2026
17	Concrete Waterproofing Systems LTD CWS	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	5 contacts →
	Partial evidence “Concrete Waterproofing Systems (CWS) is a concrete waterproofing supplier, with presence in Australia, the United States, South America and Europe, as well as distributors in a…” Source: RevenueBase Database · checked Sep 29, 2026
18	CIW Australia PTY LTD	Partial evidence	Burleigh Heads, AustraliaHQ checked Sep 29, 2026	11-50	5 contacts →
	Partial evidence “Complete Injection & Waterproofing provides professional and experienced waterproofing services to the Australian construction industry.” Source: RevenueBase Database · checked Sep 29, 2026
19	Watertite Waterproofing PTY LTD	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	4 contacts →
	Partial evidence “Commercial and industrial Waterproofing experts.” Source: RevenueBase Database · checked Sep 29, 2026
20	Allduro	Partial evidence	Canning Vale, AustraliaHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Allduro are Perth's largest independent waterproofing supply company with both local and global trading partners resulting in one of Western Australia's most comprehensive range…” Source: RevenueBase Database · checked Sep 29, 2026
21	Watertight Right PTY LTD	Partial evidence	Belmore, AustraliaHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “At Watertight Right we have the highest quality workmanship in the waterproofing industry.” Source: RevenueBase Database · checked Sep 29, 2026
22	Boss Waterproofing	Indirect evidence	Campbellfield, AustraliaHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “PU1 is a high performance, modified polyurethane membrane based on advanced polymer technology.” Source: RevenueBase Database · checked Sep 29, 2026
23	First Choice Tiling & Waterproofing PTY LTD	Partial evidence	Pendle Hill, AustraliaHQ checked Sep 29, 2026	51-200	3 contacts →
	Partial evidence “First choice tiling specializes in the supply and installation of premium Tiling, Waterproofing, Caulking, Install Package, Waterproof Material Supply & Installation.” Source: RevenueBase Database · checked Sep 29, 2026
24	Dryman	Partial evidence	Ormeau, AustraliaHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “Proven Waterproofing Solutions.” Source: RevenueBase Database · checked Sep 29, 2026
25	Waterproofing Compliance	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “We are leaders in waterproofing compliance.” Source: RevenueBase Database · checked Sep 29, 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: tunnel waterproofing 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 tunnel waterproofing companies.
Partial evidence: Its own public description names part of tunnel waterproofing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name tunnel waterproofing 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 120 tunnel waterproofing companies based in Australia

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Tunnel waterproofing companies based in Australia at a glance

As of Sep 29, 2026

19.7%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

17.5%Largest-city concentration · Sydney

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 120 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 tunnel waterproofing 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 Australia whose own description of what they do matches “tunnel waterproofing 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 tunnel waterproofing 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 tunnel waterproofing companies, and records with no verified work email. Companies headquartered outside Australia 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, 161 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.

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 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 tunnel waterproofing companies are there based in Australia?

RevenueBase identified 120 tunnel waterproofing companies headquartered in Australia 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?

Austunnel, headquartered in Lane Cove West, tops this list with the largest team on record.

Which city has the most tunnel waterproofing companies?

Sydney leads with 21 headquartered companies, followed by Melbourne (6) and Brisbane (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 161 verified decision-maker contacts tracked across these 120 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.