Company lists · Data refreshed September 2026
Top 25 Thermal insulation companies based in the United Kingdom
RevenueBase identified 625 thermal insulation companies headquartered in the United Kingdom as of September 2026 and tracks 8,354 professional contacts across them, including 3,340 with verified work emails. London is the largest hub.
This list covers thermal insulation 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 22, 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.
The 25 largest thermal insulation companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,059 contacts → | ||||
Partial evidence “SIG is a leading pan-European provider of specialist construction and insulation products.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 328 contacts → | ||||
Partial evidence “Insulation, drywall, ceilings, construction products, external facades, flooring, partitioning, passive fire protection: whatever your project, Encon has the product range…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 317 contacts → | ||||
Indirect evidence “Darchem Engineering Limited is a world class Engineering Company providing products and services primarily to meet the needs of its customers for engineered solutions to high…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 214 contacts → | ||||
Partial evidence “Minster is one of the largest growing national specialist insulation and dry lining distributors in the UK.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 178 contacts → | ||||
Indirect evidence “ROCKWOOL Limited is part of the ROCKWOOL Group.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 172 contacts → | ||||
Indirect evidence “CA Group is the UK's largest manufacturer and contractor of built-up building envelope systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 165 contacts → | ||||
Partial evidence “Mannok is a leading manufacturer of a diverse range of premium building materials, including Ireland's best performing thermal block, Mannok Aircrete Thermal Blocks, a range of…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 104 contacts → | ||||
Indirect evidence “Established in 1980, InstaGroup are a UK leader in the energy efficiency industry, covering commercial and residential projects.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 82 contacts → | ||||
Indirect evidence “SOPREMA has been an independent family group since it was founded in 1908.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 80 contacts → | ||||
Partial evidence “We specialise in a whole range of professional, gas, heating and boiler services, as well as home insulation and PV throughout UK.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 79 contacts → | ||||
Partial evidence “Belgrade Insulation is a privately owned Specialist Distributor of Insulation and Drywall Systems to all sectors of the construction market.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 70 contacts → | ||||
Partial evidence “We are one of the UK's largest providers of insulation services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 55 contacts → | ||||
Partial evidence “We can offer you thermal and acoustic glass mineral wool products that meet exacting standards together with a service that’s tailored to you.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 50 contacts → | ||||
Partial evidence “Wetherby Wall Systems Ltd | Part of ROCKWOOL Group: Your Source for Premium External Wall Insulation and Render Solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 49 contacts → | ||||
Indirect evidence “The Benx Group is a leading provider of products and solutions that enhance, protect and add value to buildings through innovation, technology and practical experience.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Partial evidence “RGM Group offers certified and accredited Ductwork, Fire & Smoke, Air Conditioning and Insulation solutions across the UK and Ireland.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 49 contacts → | ||||
Partial evidence “TLX Insulation, a division of TLX Manufacturing, produces multifoil insulation and insulating breathable membranes.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 47 contacts → | ||||
Strong evidence “Essex Thermal Services Ltd are a UK based company specialising in Thermal Insulation, Trace Heating, Ventilation and Air Conditioning Installs.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 43 contacts → | ||||
Partial evidence “Sureserve Energy Services North is a leading national installer of insulation, heating solutions and renewable technologies.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 42 contacts → | ||||
Partial evidence “Avonside Energy: Your Partner in Sustainable Building Solutions At Avonside Energy, we are dedicated to delivering best-in-class services across: New Build Insulation…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 41 contacts → | ||||
Indirect evidence “Go Interiors Limited was founded in 2001 and has since grown to become the largest independent specialist distributor in the Construction Interiors industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 40 contacts → | ||||
Partial evidence “We manufacture high performance insulation products for pipework and ductwork in building services / HVAC, process, petrochemical and refrigeration services applications.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 38 contacts → | ||||
Indirect evidence “Homelogic®, based in Southampton, Hampshire, are an innovative, forward-thinking company dedicated to bringing eco-friendly, cost effective energy saving solutions to the homes…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 34 contacts → | ||||
Indirect evidence “Soltherm are producers of the highest quality EWI system in the world and our mission is to supply these building materials and solutions to the British market.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: thermal insulation 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 thermal insulation companies.
- Partial evidence
- Its own public description names part of thermal insulation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name thermal insulation 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 625 thermal insulation companies based in the United Kingdom
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Thermal insulation companies based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
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 625 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 thermal insulation 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 “thermal insulation 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 thermal insulation 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 thermal insulation 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, 3,340 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 22, 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.
Thermal insulation companies by metro
- Thermal insulation companies in London39
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 thermal insulation 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 thermal insulation companies are there based in the United Kingdom?
RevenueBase identified 625 thermal insulation 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?
SIG PLC, headquartered in Sheffield, tops this list with the largest team on record.
Which city has the most thermal insulation companies?
London leads with 39 headquartered companies, followed by Manchester (12) and Glasgow (11).
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 3,340 verified decision-maker contacts tracked across these 625 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 22, 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.
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