Company lists · Data refreshed September 2026

Top 25 Waterproofing contractors based in the United Kingdom

Name: Waterproofing contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 465 companies tracked

RevenueBase identified 465 waterproofing contractors headquartered in the United Kingdom as of September 2026 and tracks 3,739 professional contacts across them, including 1,470 with verified work emails. London is the largest hub.

This list covers waterproofing contractors 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 14, 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 14, 2026 86% judged on-target in blind review

465Companies

3,739Contacts tracked

1,470Verified emails

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The 25 largest waterproofing contractors based in the United Kingdom

Ranked by team size

Top 25 of 465 waterproofing contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to 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	Volkerlaser	Partial evidence	Worcester, United KingdomHQ checked Sep 14, 2026	51-200	244 contacts →
	Partial evidence “VolkerLaser is the UK's leading multi-functional contractor.” Source: RevenueBase Database · checked Sep 14, 2026
2	Bauder Flat Roofs	Partial evidence	Ipswich, United KingdomHQ checked Sep 14, 2026	201-500	231 contacts →
	Partial evidence “Bauder is a manufacturer and supplier of flat roof waterproofing systems, which are complemented by high quality green roof and PV solutions.” Source: RevenueBase Database · checked Sep 14, 2026
3	Briggs Amasco LTD	Partial evidence	Cradley Heath, United KingdomHQ checked Sep 14, 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 14, 2026
4	Langley	Indirect evidence	Daventry, United KingdomHQ checked Sep 14, 2026	51-200	115 contacts →
	Indirect evidence “At Langley, our vision is to provide innovative roofscape solutions that have a lasting, positive impact on people, places, products and our planet.” Source: RevenueBase Database · checked Sep 14, 2026
5	Soprema UK	Indirect evidence	Witham, United KingdomHQ checked Sep 14, 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 14, 2026
6	BMI Icopal	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 14, 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 14, 2026
7	NCC	Partial evidence	Chorley, United KingdomHQ checked Sep 14, 2026	n/a	75 contacts →
	Partial evidence “NCC - Nationwide suppliers of resin flooring, chemically resistant coatings, bund lining systems, concrete repair, waterproofing and movement joints.” Source: RevenueBase Database · checked Sep 14, 2026
8	Alumasc Roofing	Indirect evidence	St Helens, United KingdomHQ checked Sep 14, 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 14, 2026
9	Garland UK	Partial evidence	Bristol, United KingdomHQ checked Sep 14, 2026	51-200	50 contacts →
	Partial evidence “Garland UK provide high-performance waterproofing systems to commercial, residential, industrial and public sector assets.” Source: RevenueBase Database · checked Sep 14, 2026
10	Triflex UK LTD	Indirect evidence	Stone, United KingdomHQ checked Sep 14, 2026	11-50	44 contacts →
	Indirect evidence “Triflex is the leading European specialist in cold liquid applied resins.” Source: RevenueBase Database · checked Sep 14, 2026
11	Radmat Building Products LTD	Partial evidence	Market Harborough, United KingdomHQ checked Sep 14, 2026	11-50	44 contacts →
	Partial evidence “Radmat is an independent British company specialising in the manufacture and supply of high performance roof waterproofing systems and components.” Source: RevenueBase Database · checked Sep 14, 2026
12	Roofline Group	Partial evidence	Waterlooville, United KingdomHQ checked Sep 14, 2026	51-200	44 contacts →
	Partial evidence “Construction News Specialist Contractor of the Year 2026.” Source: RevenueBase Database · checked Sep 14, 2026
13	Makers Construction Limited	Indirect evidence	Shenstone, United KingdomHQ checked Sep 14, 2026	11-50	43 contacts →
	Indirect evidence “The name Makers has been synonymous with Concrete Repair and Structural Refurbishment for over 50 years and a founding member of the CRA (Concrete Repair Association).” Source: RevenueBase Database · checked Sep 14, 2026
14	Proteus Waterproofing	Partial evidence	Rayleigh, United KingdomHQ checked Sep 14, 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 14, 2026
15	Effisus	Indirect evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
16	Premcrete LTD	Partial evidence	Andover, United KingdomHQ checked Sep 14, 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 14, 2026
17	Cemplas Waterproofing & Concrete Repairs LTD	Partial evidence	Coulsdon, United KingdomHQ checked Sep 14, 2026	11-50	35 contacts →
	Partial 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 14, 2026
18	Polyroof	Indirect evidence	Flint, United KingdomHQ checked Sep 14, 2026	51-200	35 contacts →
	Indirect evidence “For over 40 years, Polyroof has been developing and manufacturing cold-applied liquid roofing systems that continue to set the standard for waterproof performance.” Source: RevenueBase Database · checked Sep 14, 2026
19	Prestec UK Limited	Partial evidence	Burton On Trent, United KingdomHQ checked Sep 14, 2026	51-200	32 contacts →
	Partial 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 14, 2026
20	Wykamol-Mapei Waterproofing Solutions	Partial evidence	Burnley, United KingdomHQ checked Sep 14, 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 14, 2026
21	DVC Commercial Roofing Contractors	Partial evidence	Gateshead, United KingdomHQ checked Sep 14, 2026	51-200	30 contacts →
	Partial evidence “DVC Roofing Commercial Roofing Contractors trading as DVC Roofing and Building Ltd are experienced and highly skilled roofing contractors based in Newcastle, Durham and…” Source: RevenueBase Database · checked Sep 14, 2026
22	Newton Waterproofing Systems	Indirect evidence	Tonbridge, United KingdomHQ checked Sep 14, 2026	11-50	29 contacts →
	Indirect evidence “Welcome to Newton.” Source: RevenueBase Database · checked Sep 14, 2026
23	Structurecare	Partial evidence	Sheffield, United KingdomHQ checked Sep 14, 2026	11-50	28 contacts →
	Partial 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 14, 2026
24	Pudlo Products Limited	Partial evidence	Cambridgeshire, United KingdomHQ checked Sep 14, 2026	11-50	28 contacts →
	Partial evidence “PUDLO offers waterproofing and gasproofing solutions that stand the test of time.” Source: RevenueBase Database · checked Sep 14, 2026
25	HD Sharman	Indirect evidence	Chapel-en-le-frith, United KingdomHQ checked Sep 14, 2026	51-200	25 contacts →
	Indirect evidence “Sharmans is committed to supplying best-in-class gutter and roof refurbishment systems backed by a comprehensive range of guarantees and customer support options.” Source: RevenueBase Database · checked Sep 14, 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 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 waterproofing contractors.
Partial evidence: Its own public description names part of waterproofing contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 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 465 waterproofing contractors based in the United Kingdom

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Waterproofing contractors based in the United Kingdom at a glance

As of Sep 14, 2026

39.3%Verified-email coverage

8.0Average contacts per company

1-10Median size (employees)

11.6%Largest-city concentration · London

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

245

11-50

168

51-200

201-500

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 465 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 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 the United Kingdom whose own description of what they do matches “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 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 waterproofing contractors, 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, 1,470 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 14, 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 contractors by metro

Waterproofing contractors in London54

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 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 waterproofing contractors are there based in the United Kingdom?

RevenueBase identified 465 waterproofing contractors 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?

Volkerlaser, headquartered in Worcester, tops this list with the largest team on record.

Which city has the most waterproofing contractors?

London leads with 54 headquartered companies, followed by Manchester (7) and Belfast (6).

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 1,470 verified decision-maker contacts tracked across these 465 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 14, 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.