Company lists · Data refreshed November 2026

Top 25 Under-slab insulation suppliers worldwide

RevenueBase identified 2,572 company matches for under-slab insulation suppliers worldwide as of November 2026 and tracks 29,633 professional contacts across them, including 8,597 with verified work emails. The United States is the largest market and Istanbul the largest hub.

This list covers company matches for under-slab insulation suppliers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 2026. Country and city lists for under-slab insulation suppliers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
2,572Companies
29,633Contacts tracked
8,597Verified emails
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The 25 largest under-slab insulation suppliers worldwide

Ranked by team size
Top 25 of 2,572 company matches for under-slab insulation suppliers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDaytona Beach, FL, United StatesHQ recorded Nov 3, 202610001+1,608 contacts →

Exact match

“TruTeam is the nation’s largest insulation installer and we also install fireplaces, gutters, garage doors and more.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchKingscourt, IrelandHQ recorded Nov 3, 202610001+1,013 contacts →

Exact match

“At Kingspan, we're on a mission to transform the built environment through inspiration, innovation and insight.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchBrussels, BelgiumHQ recorded Nov 3, 20261,001-5,000749 contacts →

Exact match

“Recticel Group is a leading insulation company with headquarters in Belgium and operations in eight countries across Europa and the US.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchDaytona Beach, FL, United StatesHQ recorded Nov 3, 2026n/a671 contacts →

Exact match

“TopBuild is now QXO.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 3, 20261,001-5,000517 contacts →

Exact match

“Distribution International (DI) a leading distributor of thermal and acoustical insulation and related supplies for maintenance and repair operations in the United States.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchCharlotte, CT, United StatesHQ recorded Nov 3, 20261,001-5,000502 contacts →

Exact match

“SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchDaytona Beach, FL, United StatesHQ recorded Nov 3, 2026501-1,000465 contacts →

Exact match

“Service Partners is a nationwide distributor of building supplies used in the construction industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchMedford, MA, United StatesHQ recorded Nov 3, 2026501-1,000340 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchWetherby, United KingdomHQ recorded Nov 3, 2026501-1,000338 contacts →

Exact match

“Insulation, drywall, ceilings, construction products, external facades, flooring, partitioning, passive fire protection: whatever your project, Encon has the product range…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchSt. Paul, CA, United StatesHQ recorded Nov 3, 2026501-1,000283 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchWilmington, MA, United StatesHQ recorded Nov 3, 2026201-500248 contacts →

Exact match

“Homans Associates is the premier distributor of HVAC Equipment, Supplies and Mechanical Insulation products in the Northeast.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchMalakoff, FranceHQ recorded Nov 3, 2026201-500244 contacts →

Exact match

“Depuis près de 40 ans, LiTT est en France, le distributeur spécialiste de l’aménagement intérieur et de l’isolation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchCoventry, United KingdomHQ recorded Nov 3, 2026201-500234 contacts →

Exact match

“Minster is one of the largest growing national specialist insulation and dry lining distributors in the UK.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchSolaize, FranceHQ recorded Nov 3, 2026n/a217 contacts →

Exact match

“Eurocombles, isoler vos combles, garages et caves à seulement 1€!”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchGemert, NetherlandsHQ recorded Nov 3, 202610001+200 contacts →

Exact match

“Kingspan Unidek is a supplier of innovative solutions for fast and efficient construction and insulation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchColumbus, OH, United StatesHQ recorded Nov 3, 2026201-500186 contacts →

Exact match

“Interior Supply Inc.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchDerrylin, United KingdomHQ recorded Nov 3, 2026501-1,000178 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchCleveland, OH, United StatesHQ recorded Nov 3, 202651-200169 contacts →

Exact match

“Established in 1977 and incorporated in 1985, USA Insulation has saved thousands of customers millions of dollars on their heating and air conditioning bills.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchSheffield, United KingdomHQ recorded Nov 3, 2026201-500168 contacts →

Exact match

“At Galaxy Insulation & Dry Lining, we’re your nationwide trusted distribution and technical partner.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchDandenong South, AustraliaHQ recorded Nov 3, 2026201-500163 contacts →

Exact match

“Fletcher Insulation stands as a leading Australian manufacturer, distributor, and technical support provider for the building construction industry in insulation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchCharlotte, United StatesHQ recorded Nov 3, 2026201-500159 contacts →

Exact match

“Established in and headquartered in Charlotte, N.C, Greenfiber is the largest manufacturer of cellulose insulation and fire and sound products.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchPuyallup, PA, United StatesHQ recorded Nov 3, 2026501-1,000157 contacts →

Exact match

“Insulfoam, a division of Carlisle Construction Materials, is the largest manufacutrer of block molded Expanded Polysytrene (EPS) products in North America.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchIstanbul, TürkiyeHQ recorded Nov 3, 2026201-500156 contacts →

Exact match

“1985 yılında taahhüt faaliyetleriyle ticaret hayatına başlayan ve 1996 yılında üretici kimliğine kavuşarak, yapı ve teknik yalıtım olmak üzere 2 ana kategoride üretim yapan ODE…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchDenver, AL, United StatesHQ recorded Nov 3, 2026201-500150 contacts →

Exact match

“JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchSteinhausen, SwitzerlandHQ recorded Nov 3, 20261,001-5,000139 contacts →

Exact match

“Die swisspor AG ist die Nr.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 2,572 under-slab insulation suppliers worldwide

See the full list, filter by size, metro and specialty, and access 8,597 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Under-slab insulation suppliers worldwide at a glance

As of Nov 3, 2026
29.0%Verified-email coverage
11.5Average contacts per company
11-50Median size (employees)
0.7%Largest-city concentration · Istanbul
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
1,098
11-50
974
51-200
290
201-500
93
501-1,000
24
1,001-5,000
23
5,001-10,000
3
10001+
11

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for under-slab insulation suppliers are linked below.
What qualifies
Company records worldwide whose business descriptions match “under-slab insulation suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 8,597 professional contacts with verified work emails across the full matched dataset. 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 November 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Under-slab insulation suppliers by location

11 lists · largest first

Every Under-slab insulation suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “under-slab insulation suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many under-slab insulation suppliers are there worldwide?

RevenueBase identified 2,572 company matches for under-slab insulation suppliers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Truteam tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most under-slab insulation suppliers?

The United States leads with 812 companies, followed by the United Kingdom (160) and the Netherlands (141). Every under-slab insulation suppliers list by country and city is linked on this page.

Which city has the most under-slab insulation suppliers?

Istanbul leads with 19 company records, followed by Houston (14) and London (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,597 professional contacts with verified work emails tracked across these 2,572 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 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 SmartSearch, 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.