Company lists · Data refreshed September 2026

Top 25 Commercial waterproofing companies based in the United Kingdom

Name: Commercial waterproofing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 238 companies tracked

RevenueBase identified 238 commercial waterproofing companies headquartered in the United Kingdom as of September 2026 and tracks 1,801 professional contacts across them, including 712 with verified work emails. London is the largest hub.

This list covers commercial waterproofing companies headquartered in the United Kingdom, 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

238Companies

1,801Contacts tracked

712Verified emails

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The 25 largest commercial waterproofing companies based in the United Kingdom

Ranked by team size

Top 25 of 238 commercial waterproofing companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to commercial 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	Briggs Amasco LTD	Partial evidence	Cradley Heath, United KingdomHQ checked Sep 27, 2026	201-500	157 contacts →
	Partial evidence “Our Mission is to carry out Roofing and Waterproofing contracts, using the best and technically most appropriate products in order to give our customers the best value in…” Source: RevenueBase Database · checked Sep 27, 2026
2	Soprema UK	Indirect evidence	Witham, United KingdomHQ checked Sep 27, 2026	5,001-10,000	82 contacts →
	Indirect evidence “SOPREMA has been an independent family group since it was founded in 1908.” Source: RevenueBase Database · checked Sep 27, 2026
3	BMI Icopal	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 27, 2026	1,001-5,000	76 contacts →
	Partial evidence “Specify, manufacture and supply industry-leading waterproofing systems and building protection for over 160 years.” Source: RevenueBase Database · checked Sep 27, 2026
4	Alumasc Roofing	Indirect evidence	St Helens, United KingdomHQ checked Sep 27, 2026	51-200	62 contacts →
	Indirect evidence “Our aim is to provide quality sustainable building solutions which give long-term peace of mind, supported by our technical expertise and comprehensive range of single source…” Source: RevenueBase Database · checked Sep 27, 2026
5	Garland UK	Strong evidence	Bristol, United KingdomHQ checked Sep 27, 2026	51-200	50 contacts →
	Strong evidence “Garland UK provide high-performance waterproofing systems to commercial, residential, industrial and public sector assets.” Source: RevenueBase Database · checked Sep 27, 2026
6	Triflex UK LTD	Indirect evidence	Stone, United KingdomHQ checked Sep 27, 2026	11-50	44 contacts →
	Indirect evidence “Triflex is the leading European specialist in cold liquid applied resins.” Source: RevenueBase Database · checked Sep 27, 2026
7	Roofline Group	Indirect evidence	Waterlooville, United KingdomHQ checked Sep 27, 2026	51-200	44 contacts →
	Indirect evidence “Construction News Specialist Contractor of the Year 2026.” Source: RevenueBase Database · checked Sep 27, 2026
8	Proteus Waterproofing	Partial evidence	Rayleigh, United KingdomHQ checked Sep 27, 2026	11-50	37 contacts →
	Partial evidence “Proteus Waterproofing is the one-stop-solution provider for a total waterproofing and protection package.” Source: RevenueBase Database · checked Sep 27, 2026
9	Effisus	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	36 contacts →
	Indirect evidence “Effisus is a leading provider of innovative solutions that seamlessly blend Efficiency and Sustainability, delivering integrated systems with superior quality and high added value.” Source: RevenueBase Database · checked Sep 27, 2026
10	Premcrete LTD	Partial evidence	Andover, United KingdomHQ checked Sep 27, 2026	11-50	36 contacts →
	Partial evidence “Premcrete is the leading British manufacturer of pre-applied waterproofing, ground heave mitigation and gas protection systems.” Source: RevenueBase Database · checked Sep 27, 2026
11	Cemplas Waterproofing & Concrete Repairs LTD	Indirect evidence	Coulsdon, United KingdomHQ checked Sep 27, 2026	11-50	35 contacts →
	Indirect evidence “CEMPLAS was established in 1969 and is a leading specialist contractor with extensive expertise in repairing and protecting a broad range of structure types, be they new or…” Source: RevenueBase Database · checked Sep 27, 2026
12	Prestec UK Limited	Indirect evidence	Burton On Trent, United KingdomHQ checked Sep 27, 2026	51-200	32 contacts →
	Indirect evidence “Prestec has become known as a relationship contractor who can be relied upon to provide a friendly, professional service and demonstrate a full understanding of all of our…” Source: RevenueBase Database · checked Sep 27, 2026
13	Wykamol-Mapei Waterproofing Solutions	Partial evidence	Burnley, United KingdomHQ checked Sep 27, 2026	51-200	32 contacts →
	Partial evidence “Mapei, a world leader in construction chemicals, has strengthened its presence in the UK by acquiring the local manufacturer Wykamol through Mapei UK to expand its waterproofing…” Source: RevenueBase Database · checked Sep 27, 2026
14	Newton Waterproofing Systems	Indirect evidence	Tonbridge, United KingdomHQ checked Sep 27, 2026	11-50	29 contacts →
	Indirect evidence “Welcome to Newton.” Source: RevenueBase Database · checked Sep 27, 2026
15	Structurecare	Indirect evidence	Sheffield, United KingdomHQ checked Sep 27, 2026	11-50	28 contacts →
	Indirect evidence “A specialist installation, repair and maintenance contractor, providing a range of market-leading construction products and services covering the infrastructure, industrial…” Source: RevenueBase Database · checked Sep 27, 2026
16	Pudlo Products Limited	Partial evidence	Cambridgeshire, United KingdomHQ checked Sep 27, 2026	11-50	28 contacts →
	Partial evidence “PUDLO offers waterproofing and gasproofing solutions that stand the test of time.” Source: RevenueBase Database · checked Sep 27, 2026
17	Danosa UK	Partial evidence	Havant, United KingdomHQ checked Sep 27, 2026	11-50	24 contacts →
	Partial evidence “DANOSA UK Ltd is one of the UK’s leading suppliers of construction products and waterproofing solutions including: Bituminous Membranes, Synthetic PVC Single Ply Membranes…” Source: RevenueBase Database · checked Sep 27, 2026
18	Stirling Lloyd Polychem LTD	Partial evidence	Cheshire, United KingdomHQ checked Sep 27, 2026	51-200	23 contacts →
	Partial evidence “Established over 40 years ago, we pioneered the use of cold, spray applied waterproofing systems.” Source: RevenueBase Database · checked Sep 27, 2026
19	TOR Coatings Limited	Indirect evidence	Chester-Le-Street, United KingdomHQ checked Sep 27, 2026	51-200	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
20	Delta Membrane Systems LTD	Partial evidence	North Weald, United KingdomHQ checked Sep 27, 2026	11-50	21 contacts →
	Partial evidence “Delta Membrane Systems Limited provides a full range of waterproofing and damp proofing solutions for architects, specifiers, developers, contractors and homeowners on new…” Source: RevenueBase Database · checked Sep 27, 2026
21	Atal UK	Partial evidence	Tredegar, United KingdomHQ checked Sep 27, 2026	11-50	19 contacts →
	Partial evidence “We are experts in structural and basement waterproofing and ground gas protection system solutions, specialising in below ground structures and podium decks.” Source: RevenueBase Database · checked Sep 27, 2026
22	Site Group LTD	Partial evidence	Airth, United KingdomHQ checked Sep 27, 2026	11-50	18 contacts →
	Partial evidence “Site Sealants Ltd have a team of highly trained staff including fully Certified Surveyors in Structural Waterproofing who liaise closely with architects and engineers at the…” Source: RevenueBase Database · checked Sep 27, 2026
23	RIO Group	Partial evidence	Birmingham, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Partial evidence “Rio Group provide management contracting services for all aspects of waterproofing, surfacing and landscaping.” Source: RevenueBase Database · checked Sep 27, 2026
24	Total Specialist Maintenance	Partial evidence	Nottingham, United KingdomHQ checked Sep 27, 2026	51-200	15 contacts →
	Partial evidence “Total Specialist Maintenance (TSM) is a specialist infrastructure contractor delivering structural repair, concrete repair, waterproofing, cathodic protection, strengthening and…” Source: RevenueBase Database · checked Sep 27, 2026
25	Liquid Roofing Systems LTD	Partial evidence	Whitchurch, United KingdomHQ checked Sep 27, 2026	11-50	13 contacts →
	Partial evidence “At LRS, it is our mission to provide roofers with the highest performing and most cost-effective solutions when it comes to waterproofing roofs.” 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: commercial 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 commercial waterproofing companies.
Partial evidence: Its own public description names part of commercial waterproofing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial 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 238 commercial waterproofing companies based in the United Kingdom

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Commercial waterproofing companies based in the United Kingdom at a glance

As of Sep 27, 2026

39.5%Verified-email coverage

7.6Average contacts per company

11-50Median size (employees)

14.3%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

110

11-50

103

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 238 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 commercial 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 the United Kingdom whose own description of what they do matches “commercial 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 commercial 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 commercial waterproofing companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 712 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 commercial 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 commercial waterproofing companies are there based in the United Kingdom?

RevenueBase identified 238 commercial waterproofing companies headquartered in the United Kingdom 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?

Briggs Amasco LTD, headquartered in Cradley Heath, tops this list with the largest team on record.

Which city has the most commercial waterproofing companies?

London leads with 34 headquartered companies, followed by Manchester (5) and Sheffield (5).

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 712 verified decision-maker contacts tracked across these 238 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.