Company lists · Data refreshed September 2026

Top 25 Insulation contractors worldwide

Name: Insulation contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 13,858 companies tracked

RevenueBase identified 13,858 insulation contractors worldwide as of September 2026 and tracks 150,123 professional contacts across them, including 36,660 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers insulation contractors worldwide, 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 17, 2026. Country and city lists for insulation contractors follow the table.

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 17, 2026 86% judged on-target in blind review

13,858Companies

150,123Contacts tracked

36,660Verified emails

0Mobile numbers

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The 25 largest insulation contractors worldwide

Ranked by team size

Top 25 of 13,858 insulation contractors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insulation 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	Kaefer	Indirect evidence	Bremen, GermanyHQ checked Sep 17, 2026	10001+	2,624 contacts →
	Indirect evidence “For over a century, KAEFER has been helping clients to protect and extend the life of their most valuable assets, while ensuring operational efficiency and the smooth delivery of…” Source: RevenueBase Database · checked Sep 17, 2026
2	Reframax Engenharia S.A	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,340 contacts →
	Indirect evidence “Fundada em a Reframax se consolidou no mercado de aplicação de revestimento refratário e isolamento térmico devido à grande competência da sua equipe, ao investimento permanente…” Source: RevenueBase Database · checked Sep 17, 2026
3	Knauf Insulation	Partial evidence	Vise, BelgiumHQ checked Sep 17, 2026	5,001-10,000	1,935 contacts →
	Partial evidence “Knauf Insulation is one of the world’s largest manufacturers of insulation products and solutions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Truteam	Partial evidence	Daytona Beach, FL, United StatesHQ checked Sep 17, 2026	10001+	1,561 contacts →
	Partial evidence “TruTeam is the nation’s largest insulation installer and we also install fireplaces, gutters, garage doors and more.” Source: RevenueBase Database · checked Sep 17, 2026
5	Lindner Group	Partial evidence	Arnstorf, GermanyHQ checked Sep 17, 2026	5,001-10,000	1,129 contacts →
	Partial evidence “The Lindner Group is Europe's leading full-service provider - manufacturer and service provider - for interior fit-out, building envelope, building services and insulation…” Source: RevenueBase Database · checked Sep 17, 2026
6	SIG PLC	Partial evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	5,001-10,000	1,059 contacts →
	Partial evidence “SIG is a leading pan-European provider of specialist construction and insulation products.” Source: RevenueBase Database · checked Sep 17, 2026
7	Kingspan Insulation	Partial evidence	Leominster, United StatesHQ checked Sep 17, 2026	1,001-5,000	955 contacts →
	Partial evidence “Kingspan Insulation is the industry leading manufacturer of innovative insulation solutions, which help create a more sustainable and energy efficient built environment.” Source: RevenueBase Database · checked Sep 17, 2026
8	Kaefer Australia	Indirect evidence	Perth, AustraliaHQ checked Sep 17, 2026	1,001-5,000	926 contacts →
	Indirect evidence “KAEFER has an established and widespread presence across Australia, operating in the country for nearly 40 years and globally for over 100.” Source: RevenueBase Database · checked Sep 17, 2026
9	Lloyd Insulations India Limited	Partial evidence	New Delhi, IndiaHQ checked Sep 17, 2026	1,001-5,000	868 contacts →
	Partial evidence “Lloyd Insulation is one of India’s leading companies offering end to end industry solutions that help create a more sustainable and energy-efficient built environment.” Source: RevenueBase Database · checked Sep 17, 2026
10	Feenstra	Indirect evidence	Lelystad, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	781 contacts →
	Indirect evidence “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Source: RevenueBase Database · checked Sep 17, 2026
11	Recticel	Partial evidence	Brussels, BelgiumHQ checked Sep 17, 2026	1,001-5,000	707 contacts →
	Partial evidence “Recticel Group is a leading insulation company with headquarters in Belgium and operations in eight countries across Europa and the US.” Source: RevenueBase Database · checked Sep 17, 2026
12	Topbuild	Indirect evidence	Daytona Beach, FL, United StatesHQ checked Sep 17, 2026	n/a	692 contacts →
	Indirect evidence “TopBuild is now QXO.” Source: RevenueBase Database · checked Sep 17, 2026
13	Prism Electric	Indirect evidence	Garland, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	687 contacts →
	Indirect evidence “Our story began in 1994 with a simple vision: Build a company that does things right.” Source: RevenueBase Database · checked Sep 17, 2026
14	Kaefer France	Indirect evidence	Courbevoie, FranceHQ checked Sep 17, 2026	1,001-5,000	671 contacts →
	Indirect evidence “KAEFER WANNER, leader français de l’isolation industrielle, est un partenaire très demandé en Isolation Thermique Industrielle et Nucléaire, Echafaudage, Désamiantage, Protection…” Source: RevenueBase Database · checked Sep 17, 2026
15	Kaefer Norway	Indirect evidence	Stavanger, NorwayHQ checked Sep 17, 2026	1,001-5,000	663 contacts →
	Indirect evidence “KAEFER is a part of the KAEFER Group, one of Europe’s largest construction companies.” Source: RevenueBase Database · checked Sep 17, 2026
16	Ursa By Etex	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	1,001-5,000	605 contacts →
	Partial evidence “URSA is a company dedicated to the manufacture and commercialization of thermal and acoustic insulation materials oriented towards sustainability and energy efficiency in…” Source: RevenueBase Database · checked Sep 17, 2026
17	SPI	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	571 contacts →
	Partial evidence “SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Source: RevenueBase Database · checked Sep 17, 2026
18	Convoy Supply	Strong evidence	Surrey, BC, CanadaHQ checked Sep 17, 2026	501-1,000	518 contacts →
	Strong evidence “Convoy Supply opened for business in 1972 as a one-step distributor to roofing, insulation and siding contractors.” Source: RevenueBase Database · checked Sep 17, 2026
19	Distribution International	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	488 contacts →
	Partial evidence “Distribution International (DI) a leading distributor of thermal and acoustical insulation and related supplies for maintenance and repair operations in the United States.” Source: RevenueBase Database · checked Sep 17, 2026
20	Inglett & Stubbs	Indirect evidence	Mableton, GA, United StatesHQ checked Sep 17, 2026	501-1,000	459 contacts →
	Indirect evidence “Inglett & Stubbs LLC is a recognized leader in the electrical construction industry today.” Source: RevenueBase Database · checked Sep 17, 2026
21	Service Partners	Indirect evidence	Daytona Beach, FL, United StatesHQ checked Sep 17, 2026	501-1,000	459 contacts →
	Indirect evidence “Service Partners is a nationwide distributor of building supplies used in the construction industry.” Source: RevenueBase Database · checked Sep 17, 2026
22	ACE Electric, INC	Partial evidence	Valdosta, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	455 contacts →
	Partial evidence “Ace Electric is a family-owned/operated electrical contractor performing safe and high-quality work for clients throughout the United States.” Source: RevenueBase Database · checked Sep 17, 2026
23	VON Roll	Indirect evidence	Wesel, GermanyHQ checked Sep 17, 2026	1,001-5,000	434 contacts →
	Indirect evidence “Please note that this account is no longer being actively managed.” Source: RevenueBase Database · checked Sep 17, 2026
24	KPS Global LLC	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	501-1,000	419 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Excel Modular Scaffold	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	403 contacts →
	Indirect evidence “Meeting industry’s soft-craft demands is what makes Excel a true leader.” Source: RevenueBase Database · checked Sep 17, 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: insulation 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 insulation contractors.
Partial evidence: Its own public description names part of insulation contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insulation 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 13,858 insulation contractors worldwide

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Insulation contractors worldwide at a glance

As of Sep 17, 2026

24.4%Verified-email coverage

10.8Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

6,173

11-50

5,151

51-200

1,627

201-500

445

501-1,000

104

1,001-5,000

5,001-10,000

10001+

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 insulation 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.
Coverage: 32 countries, largest first: the United States, the United Kingdom, France, Canada, Italy, the Netherlands, Germany, India, Australia, Türkiye and 22 more. Country and city lists for insulation contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “insulation 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 insulation 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 insulation contractors, and records with no verified work email.
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, 36,660 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 17, 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.

Insulation contractors by location

42 lists · largest first

Every Insulation contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 insulation 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 insulation contractors are there worldwide?

RevenueBase identified 13,858 insulation contractors worldwide 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?

Kaefer, headquartered in Bremen, tops this list with the largest team on record.

Which country has the most insulation contractors?

The United States leads with 4,832 companies, followed by the United Kingdom (1,481) and France (1,465). Every insulation contractors list by country and city is linked on this page.

Which city has the most insulation contractors?

London leads with 104 headquartered companies, followed by Houston (75) and Istanbul (74).

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 36,660 verified decision-maker contacts tracked across these 13,858 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 17, 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.