Company lists · Data refreshed September 2026

Top 25 Polyisocyanurate insulation manufacturers based in the United Kingdom

Name: Polyisocyanurate insulation manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 103 companies tracked

RevenueBase identified 103 polyisocyanurate insulation manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,630 professional contacts across them, including 1,270 with verified work emails. London is the largest hub.

This list covers polyisocyanurate insulation manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

103Companies

2,630Contacts tracked

1,270Verified emails

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The 25 largest polyisocyanurate insulation manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 103 polyisocyanurate insulation manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to polyisocyanurate insulation manufacturers: 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	ARC Building Solutions	Indirect evidence	Leeds, United KingdomHQ checked Sep 30, 2026	51-200	58 contacts →
	Indirect evidence “At ARC® Building Solutions, protection is our purpose.” Source: RevenueBase Database · checked Sep 30, 2026
2	MAX Energy LTD	Partial evidence	Leicester, United KingdomHQ checked Sep 30, 2026	201-500	53 contacts →
	Partial evidence “Max Energy Ltd is a UK based new build construction company specialising in the sale of insulation to the new build housing sector on a supply and install basis.” Source: RevenueBase Database · checked Sep 30, 2026
3	TLX Insulation	Partial evidence	Bolton, United KingdomHQ checked Sep 30, 2026	11-50	49 contacts →
	Partial evidence “TLX Insulation, a division of TLX Manufacturing, produces multifoil insulation and insulating breathable membranes.” Source: RevenueBase Database · checked Sep 30, 2026
4	Isoclad	Indirect evidence	North Shields, United KingdomHQ checked Sep 30, 2026	51-200	31 contacts →
	Indirect evidence “We focus on making reliable panels and supporting you at every stage.” Source: RevenueBase Database · checked Sep 30, 2026
5	Eurobond Laminates LTD	Partial evidence	Cardiff, United KingdomHQ checked Sep 30, 2026	51-200	31 contacts →
	Partial evidence “Eurobond is the leading designer and manufacturer of non-combustible core internal and external wall and ceiling solutions in the UK.” Source: RevenueBase Database · checked Sep 30, 2026
6	Actis Insulation	Partial evidence	Chippenham, United KingdomHQ checked Sep 30, 2026	11-50	28 contacts →
	Partial evidence “ACTIS is an innovative European insulation specialist whose vision is to develop effective and environmentally friendly ways of reducing energy consumption.” Source: RevenueBase Database · checked Sep 30, 2026
7	Hemsec	Partial evidence	Prescot, United KingdomHQ checked Sep 30, 2026	51-200	24 contacts →
	Partial evidence “Hemsec is a leading UK based insulated panel manufacturer.” Source: RevenueBase Database · checked Sep 30, 2026
8	Polyfoam XPS	Strong evidence	Hartlepool, United KingdomHQ checked Sep 30, 2026	11-50	21 contacts →
	Strong evidence “Polyfoam XPS Ltd is a leading manufacturer of closed cell, extruded polystyrene insulation.” Source: RevenueBase Database · checked Sep 30, 2026
9	Seymour Manufacturing International SMI	Partial evidence	Telford, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Partial evidence “Thermal protection perfection - we're the inventors of the acclaimed Tempro, the remarkable lightweight thermal insulation material which has been scientifically proven to cut…” Source: RevenueBase Database · checked Sep 30, 2026
10	Taperedplus	Indirect evidence	Stockton On Tees, United KingdomHQ checked Sep 30, 2026	11-50	16 contacts →
	Indirect evidence “B Corp certified TaperedPlus limited was launched by Robert Vass and Aman Chahal following over 15 years experience in the flat roofing Industry.” Source: RevenueBase Database · checked Sep 30, 2026
11	Klasse Group LTD	Indirect evidence	Swansea, United KingdomHQ checked Sep 30, 2026	51-200	15 contacts →
	Indirect evidence “Klasse Group wants to create a safer future and drive change in the building industry to ensure that every structure is designed and fabricated with superior fire safety as a…” Source: RevenueBase Database · checked Sep 30, 2026
12	AIM	Partial evidence	Crawley, United KingdomHQ checked Sep 30, 2026	51-200	14 contacts →
	Partial evidence “Established in 1989 as an insulation converter.” Source: RevenueBase Database · checked Sep 30, 2026
13	Wray-Tech Supplies LTD	Partial evidence	Galleywood, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Partial evidence “Innovative Insulation Solutions with Comprehensive Technical Support: Wray-tech specialises in Fire Protection, Acoustic materials, Thermal solutions, Drylining, and External…” Source: RevenueBase Database · checked Sep 30, 2026
14	Isothane LTD	Strong evidence	Accrington, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Strong evidence “Isothane are a leading developer and manufacturer of polyurethane technology for use in thermal insulation, waterproofing and rigid foam products.” Source: RevenueBase Database · checked Sep 30, 2026
15	Ecotherm Insulation	Partial evidence	Basildon, United KingdomHQ checked Sep 30, 2026	51-200	11 contacts →
	Partial evidence “EcoTherm Insulation (UK) is one of the UK's leading suppliers of PIR rigid thermal insulation.” Source: RevenueBase Database · checked Sep 30, 2026
16	Gill Insulation	Partial evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	51-200	10 contacts →
	Partial evidence “Supplying and installing thermal insulation for over 75 years, priding ourselves on a professional service and close working relationships with our clients.” Source: RevenueBase Database · checked Sep 30, 2026
17	H&v Insulation Supplies Limited	Partial evidence	Stapleford Abbotts, United KingdomHQ checked Sep 30, 2026	11-50	9 contacts →
	Partial evidence “H&V INSULATION SUPPLIES LIMITED is a construction company based out of UNITS1 & 2 THE MITCHELLS GUTTERIDGE LANE, STAPLEFORD ABBOTTS, United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
18	Ibsl Group LTD	Partial evidence	Seaton Delaval, United KingdomHQ checked Sep 30, 2026	51-200	9 contacts →
	Partial evidence “IBSL have been established since 1989 as a provider of high performance insulation products.” Source: RevenueBase Database · checked Sep 30, 2026
19	Linroc Limited	Partial evidence	Watchfield, United KingdomHQ checked Sep 30, 2026	1-10	8 contacts →
	Partial evidence “Linroc Limited are an independently owned company specialising in the design and supply of tapered insulation systems alongside all other flat roof insulation systems.” Source: RevenueBase Database · checked Sep 30, 2026
20	Marmox UK	Strong evidence	Chatham, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Strong evidence “Marmox (UK) Ltd is part of the CMB group, which was founded in the 1970s and now manufactures innovative building products and specialist insulation materials for the construction…” Source: RevenueBase Database · checked Sep 30, 2026
21	Thermabead LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “Welcome to ThermaBead!” Source: RevenueBase Database · checked Sep 30, 2026
22	Concept Conversions LTD	Partial evidence	Wellingborough, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Partial evidence “Thermal Insulation \| Fire Stopping \| Acoustic Insulation \| Trapezoidal Acoustic Infill \| Cavity Stop Sock \| TCB \| Insulated DPC \| Open State Cavity Barrier \| Rainscreen \| External…” Source: RevenueBase Database · checked Sep 30, 2026
23	MW Insulation LTD	Partial evidence	Park, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Partial evidence “Fabricators and suppliers of Supaphen phenolic and Supapir PIR rigid thermal insulation pipe section.” Source: RevenueBase Database · checked Sep 30, 2026
24	Foamtech Limited	Partial evidence	Birmingham, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Partial evidence “We are an independent distributor and fabricator of thermal insulation products based in the West Midlands with coverage and prompt service across the whole of the UK and Ireland.” Source: RevenueBase Database · checked Sep 30, 2026
25	Thermal Insulation Manufacturers & Suppliers Association Timsa	Strong evidence	Bordon, United KingdomHQ checked Sep 30, 2026	1-10	6 contacts →
	Strong evidence “Formed in 1978, TIMSA is a trade association comprising UK manufacturers, consultants, suppliers and distributors of the whole range of thermal insulation materials, ancillaries…” Source: RevenueBase Database · checked Sep 30, 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: polyisocyanurate insulation manufacturers. 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 polyisocyanurate insulation manufacturers.
Partial evidence: Its own public description names part of polyisocyanurate insulation manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name polyisocyanurate insulation manufacturers. 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 103 polyisocyanurate insulation manufacturers based in the United Kingdom

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Polyisocyanurate insulation manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

48.3%Verified-email coverage

25.5Average contacts per company

11-50Median size (employees)

8.7%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 103 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 polyisocyanurate insulation manufacturers, 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 “polyisocyanurate insulation manufacturers”. 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 polyisocyanurate insulation manufacturers), 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 polyisocyanurate insulation manufacturers, 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, 1,270 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 30, 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 polyisocyanurate insulation manufacturers, 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 polyisocyanurate insulation manufacturers are there based in the United Kingdom?

RevenueBase identified 103 polyisocyanurate insulation manufacturers 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?

ARC Building Solutions, headquartered in Leeds, tops this list with the largest team on record.

Which city has the most polyisocyanurate insulation manufacturers?

London leads with 9 headquartered companies, followed by Birmingham (3) and Basildon (2).

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 1,270 verified decision-maker contacts tracked across these 103 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 30, 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.