Company lists · Data refreshed September 2026

Top 25 Flat roof installation companies based in the United Kingdom

Name: Flat roof installation 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 19, 2026 1,094 companies tracked

RevenueBase identified 1,094 flat roof installation companies headquartered in the United Kingdom as of September 2026 and tracks 7,751 professional contacts across them, including 2,389 with verified work emails. London is the largest hub.

This list covers flat roof installation 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 19, 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 19, 2026 86% judged on-target in blind review

1,094Companies

7,751Contacts tracked

2,389Verified emails

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The 25 largest flat roof installation companies based in the United Kingdom

Ranked by team size

Top 25 of 1,094 flat roof installation companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to flat roof installation 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	BMI Group	Partial evidence	Reading, United KingdomHQ checked Sep 19, 2026	5,001-10,000	2,448 contacts →
	Partial evidence “BMI Group was born out of the recognition that customers now expect a single point of expertise to help them find their ideal roof.” Source: RevenueBase Database · checked Sep 19, 2026
2	SIG Roofing	Partial evidence	St Ives, United KingdomHQ checked Sep 19, 2026	5,001-10,000	249 contacts →
	Partial evidence “SIG Roofing has everything you need under one roof.” Source: RevenueBase Database · checked Sep 19, 2026
3	Bauder Flat Roofs	Strong evidence	Ipswich, United KingdomHQ checked Sep 19, 2026	201-500	231 contacts →
	Strong 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 19, 2026
4	Briggs Amasco LTD	Indirect evidence	Cradley Heath, United KingdomHQ checked Sep 19, 2026	201-500	157 contacts →
	Indirect 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 19, 2026
5	Langley	Indirect evidence	Daventry, United KingdomHQ checked Sep 19, 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 19, 2026
6	The M&j Group	Partial evidence	Bedford, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Partial evidence “M&J Group are one of the largest specialist construction companies in the UK, having developed our extensive knowledge of the flat roofing industry into total building envelope…” Source: RevenueBase Database · checked Sep 19, 2026
7	Central Group	Indirect evidence	Hereford, United KingdomHQ checked Sep 19, 2026	51-200	66 contacts →
	Indirect evidence “Central Group is a specialist roofing, cladding and building envelope contractor with over 40 years experience delivering complex projects across the UK.” Source: RevenueBase Database · checked Sep 19, 2026
8	ALL Metal Roofing LTD	Partial evidence	Waltham Abbey, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “AMR is a specialist contractor for fully supported, hard metal roofing and cladding and flat roofing for commercial and residential properties in the UK and overseas.” Source: RevenueBase Database · checked Sep 19, 2026
9	Garland UK	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Indirect evidence “Garland UK provide high-performance waterproofing systems to commercial, residential, industrial and public sector assets.” Source: RevenueBase Database · checked Sep 19, 2026
10	Roofdec LTD	Indirect evidence	Rotherham, United KingdomHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “Roofdec was established in 1971 and therefore in 2016 celebrates 45 years in business, an achievement few in either the roofing and cladding or the building industry in general…” Source: RevenueBase Database · checked Sep 19, 2026
11	Roofline Group	Indirect evidence	Waterlooville, United KingdomHQ checked Sep 19, 2026	51-200	44 contacts →
	Indirect evidence “Construction News Specialist Contractor of the Year 2026.” Source: RevenueBase Database · checked Sep 19, 2026
12	AYM Services	Partial evidence	Kent, United KingdomHQ checked Sep 19, 2026	51-200	42 contacts →
	Partial evidence “AYM Services is a specialist flat roofing contractor operating across London, the South East, and the South West.” Source: RevenueBase Database · checked Sep 19, 2026
13	Complete Roofing Systems	Indirect evidence	Warrington, United KingdomHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “CRS is a leading roofing and cladding specialist working with commercial, industrial and public sector clients across the UK.” Source: RevenueBase Database · checked Sep 19, 2026
14	Roofclad Systems	Indirect evidence	Lichfield, United KingdomHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “Roofclad Systems is a trusted, certified and nationwide commercial and industrial roofing specialist.” Source: RevenueBase Database · checked Sep 19, 2026
15	Polyroof	Indirect evidence	Flint, United KingdomHQ checked Sep 19, 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 19, 2026
16	Blade Roofing LTD	Indirect evidence	Bradford, United KingdomHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “Blade Roofing Ltd is a National commercial roofing company offering both reactive repairs and large-scale roofing refurbishments.” Source: RevenueBase Database · checked Sep 19, 2026
17	DVC Commercial Roofing Contractors	Indirect evidence	Gateshead, United KingdomHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect 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 19, 2026
18	LRL Roofing Solutions	Indirect evidence	Eccles, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Expert Advice.” Source: RevenueBase Database · checked Sep 19, 2026
19	Roofspace Solutions	Indirect evidence	Alcester, United KingdomHQ checked Sep 19, 2026	201-500	29 contacts →
	Indirect evidence “As of the 1st April 2026, Roofspace Solutions operates under the Pasquill business, creating a single, consolidated supplier of structural roofing and flooring systems.” Source: RevenueBase Database · checked Sep 19, 2026
20	North Wales Industrial Roofing	Indirect evidence	Warrington, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “As one of the UK's only specialist commercial roofing contractors, we provide a wide range of commercial and industrial roofing services that are tailor-made to suit your business…” Source: RevenueBase Database · checked Sep 19, 2026
21	AB Roofing Solutions LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	51-200	28 contacts →
	Indirect evidence “AB Roofing Solutions Ltd is a commercial roofing specialist with offices in Sheffield and Durham but servicing the whole of the UK, covering all roofing solutions.” Source: RevenueBase Database · checked Sep 19, 2026
22	BBR Roofing LTD	Indirect evidence	Liverpool, United KingdomHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “From humble beginnings over twenty years ago, BBR has developed from a family run roofing company to become a leading specialist in the roofing business, with particular expertise…” Source: RevenueBase Database · checked Sep 19, 2026
23	Flex-R	Partial evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “Flex-R is a leading supplier of professional flat roofing systems across the UK.” Source: RevenueBase Database · checked Sep 19, 2026
24	Centaur Technologies Limited	Indirect evidence	Preston, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Centaur Technologies Limited is a British Owned and managed specialist roofing company, focused on the development and supply of leading edge liquid roofing systems.” Source: RevenueBase Database · checked Sep 19, 2026
25	Permavent LTD	Indirect evidence	Weymouth, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Permavent Ltd deliver a range of patented products that offer low pitch roofing solutions, speciality membranes and insulation.” Source: RevenueBase Database · checked Sep 19, 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: flat roof installation 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 flat roof installation companies.
Partial evidence: Its own public description names part of flat roof installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name flat roof installation 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 1,094 flat roof installation companies based in the United Kingdom

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Flat roof installation companies based in the United Kingdom at a glance

As of Sep 19, 2026

30.8%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

689

11-50

302

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,094 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 flat roof installation 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 “flat roof installation 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 flat roof installation 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 flat roof installation 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, 2,389 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 19, 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.

Flat roof installation companies by metro

Flat roof installation companies in London55

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 flat roof installation 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 flat roof installation companies are there based in the United Kingdom?

RevenueBase identified 1,094 flat roof installation 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?

BMI Group, headquartered in Reading, tops this list with the largest team on record.

Which city has the most flat roof installation companies?

London leads with 55 headquartered companies, followed by Manchester (20) and Glasgow (19).

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 2,389 verified decision-maker contacts tracked across these 1,094 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 19, 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.