Company lists · Data refreshed September 2026

Top 25 Waterproofing and sealing companies based in Australia

Name: Waterproofing and sealing 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 253 companies tracked

RevenueBase identified 253 waterproofing and sealing companies headquartered in Australia as of September 2026 and tracks 1,097 professional contacts across them, including 344 with verified work emails. Sydney is the largest hub.

This list covers waterproofing and sealing 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

253Companies

1,097Contacts tracked

344Verified emails

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The 25 largest waterproofing and sealing companies based in Australia

Ranked by team size

Top 25 of 253 waterproofing and sealing 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 waterproofing and sealing 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	Bayset	Indirect evidence	Coopers Plains, AustraliaHQ checked Sep 29, 2026	51-200	57 contacts →
	Indirect evidence “Our senior technical team have over 230 years hands on experience in all areas of the building envelope, from basement to roof top and work with many international technically…” 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	Roof & Building Service AUS PTY LTD	Indirect evidence	Eagle Farm, AustraliaHQ checked Sep 29, 2026	11-50	44 contacts →
	Indirect evidence “Roof & Building Service has been the industry leader, providing water penetration solutions in Australia since 1928.” Source: RevenueBase Database · checked Sep 29, 2026
6	The Grout GUY	Partial evidence	Wangara, AustraliaHQ checked Sep 29, 2026	51-200	25 contacts →
	Partial evidence “At The Grout Guy, we specialise in professional regrouting, tile repair, and waterproofing solutions for residential and commercial properties across Australia.” Source: RevenueBase Database · checked Sep 29, 2026
7	Crommelin	Indirect evidence	Perth, AustraliaHQ checked Sep 29, 2026	51-200	23 contacts →
	Indirect evidence “Proven Protection.” Source: RevenueBase Database · checked Sep 29, 2026
8	Penetron Australia	Partial evidence	Moorebank, AustraliaHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “Penetron Australia are the industry leaders in providing waterproofing durability and concrete repair products, dedicated to consistent performance and reliability.” Source: RevenueBase Database · checked Sep 29, 2026
9	Aptc Australia	Indirect evidence	Keysborough, AustraliaHQ checked Sep 29, 2026	11-50	19 contacts →
	Indirect evidence “Our company just ended operation” Source: RevenueBase Database · checked Sep 29, 2026
10	RCR Services	Partial evidence	Newcastle, AustraliaHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “RCR Services is a trusted partner for commercial roofing, waterproofing, and concrete remediation projects across Australia.” Source: RevenueBase Database · checked Sep 29, 2026
11	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
12	Waterproofing Assurance PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	16 contacts →
	Partial evidence “Waterproofing Assurance provides a unique quality assurance service to our clients for waterproofing membrane systems.” Source: RevenueBase Database · checked Sep 29, 2026
13	Superseal SPC	Partial evidence	Revesby, AustraliaHQ checked Sep 29, 2026	51-200	16 contacts →
	Partial evidence “Its easy to call ourselves market leaders in the waterproofing and epoxy flooring sector.” Source: RevenueBase Database · checked Sep 29, 2026
14	Denso Australia PTY LTD	Partial evidence	Campbellfield, AustraliaHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “Denso (Australia) Pty Ltd are leaders in Corrosion Prevention and Sealing Technology.” Source: RevenueBase Database · checked Sep 29, 2026
15	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
16	Pasco Construction Solutions	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Our intimate market knowledge allowed us to identify a gap in the Commercial and Residential building sector for the supply of a comprehensive range of waterproofing and sealant…” Source: RevenueBase Database · checked Sep 29, 2026
17	Wet-Seal Waterproofing	Partial evidence	Coffs Harbour, AustraliaHQ checked Sep 29, 2026	201-500	10 contacts →
	Partial evidence “Wet-seal is Australia’s largest waterproofing franchise network, delivering an innovative waterproofing solution to the market that saves time and mitigates risk.” Source: RevenueBase Database · checked Sep 29, 2026
18	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
19	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
20	Multipanel	Partial evidence	Carrum Downs, AustraliaHQ checked Sep 29, 2026	11-50	9 contacts →
	Partial evidence “MULTIPANEL is an industry leader in the design and manufacturing of innovative waterproofing solutions.” Source: RevenueBase Database · checked Sep 29, 2026
21	Australasian Stone	Partial evidence	Mount Waverley, AustraliaHQ checked Sep 29, 2026	51-200	9 contacts →
	Partial evidence “Australasian Stone is a leading Stone, Tiling and Waterproofing contractor.” Source: RevenueBase Database · checked Sep 29, 2026
22	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
23	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
24	The Shower Repair Centre	Indirect evidence	Brookvale, AustraliaHQ checked Sep 29, 2026	11-50	6 contacts →
	Indirect evidence “We seal leaking showers and balconies without removing the tiles.” Source: RevenueBase Database · checked Sep 29, 2026
25	SWI Waterproofing	Partial evidence	Wetherill Park, AustraliaHQ checked Sep 29, 2026	11-50	6 contacts →
	Partial evidence “Australia’s leading roofing & waterproofing contractor specialising in single ply sheet membranes with over 20 years experience.” 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: waterproofing and sealing 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 waterproofing and sealing companies.
Partial evidence: Its own public description names part of waterproofing and sealing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name waterproofing and sealing 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 253 waterproofing and sealing companies based in Australia

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Waterproofing and sealing companies based in Australia at a glance

As of Sep 29, 2026

31.4%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

13.4%Largest-city concentration · Sydney

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

157

11-50

51-200

201-500

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 253 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 waterproofing and sealing 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 “waterproofing and sealing 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 waterproofing and sealing 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 waterproofing and sealing 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, 344 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.

Waterproofing and sealing companies by metro

Waterproofing and sealing companies in Sydney34

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 waterproofing and sealing 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 waterproofing and sealing companies are there based in Australia?

RevenueBase identified 253 waterproofing and sealing 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?

Bayset, headquartered in Coopers Plains, tops this list with the largest team on record.

Which city has the most waterproofing and sealing companies?

Sydney leads with 34 headquartered companies, followed by Melbourne (15) and Gold Coast (10).

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 344 verified decision-maker contacts tracked across these 253 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.