Company lists · Data refreshed September 2026

Top 25 Insulation manufacturers based in Ireland

Name: Insulation manufacturers based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 89 companies tracked

RevenueBase identified 89 insulation manufacturers headquartered in Ireland as of September 2026 and tracks 1,918 professional contacts across them, including 818 with verified work emails. Dublin is the largest hub.

This list covers insulation manufacturers headquartered in Ireland, 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.

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

89Companies

1,918Contacts tracked

818Verified emails

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The 25 largest insulation manufacturers based in Ireland

Ranked by team size

Top 25 of 89 insulation manufacturers based in Ireland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to 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	Kingspan Group	Indirect evidence	Kingscourt, IrelandHQ checked Sep 17, 2026	10001+	931 contacts →
	Indirect evidence “At Kingspan, we're on a mission to transform the built environment through inspiration, innovation and insight.” Source: RevenueBase Database · checked Sep 17, 2026
2	Energystore	Partial evidence	Holywood, IrelandHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “Energystore is rethinking construction with free-flowing insulation.” Source: RevenueBase Database · checked Sep 17, 2026
3	Senator Windows	Indirect evidence	Wexford, IrelandHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “Since 1985, Senator Windows has been helping Irish householders to brighten up their homes.” Source: RevenueBase Database · checked Sep 17, 2026
4	Ecological Building Systems	Indirect evidence	Athboy, IrelandHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “Ecological Building Systems was set up in Athboy, County Meath in the UK division was established in 2007 and is based near Carlisle in Cumbria.” Source: RevenueBase Database · checked Sep 17, 2026
5	Tennants Building Products	Indirect evidence	IrelandHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Tennants Building Products is part of the Tennants Group of Companies, which was originally founded in 1797.” Source: RevenueBase Database · checked Sep 17, 2026
6	House 2 Home Retrofit LTD	Indirect evidence	Dublin 12, IrelandHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “House 2 Home has been Ireland's leading 'one stop shop' for energy upgrades since 2013.” Source: RevenueBase Database · checked Sep 17, 2026
7	Exitex LTD	Indirect evidence	Dundalk, IrelandHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Exitex Ltd has 40 years of experience in designing and manufacturing premium cost-effective weather-proofing, intumescent and acoustic products.” Source: RevenueBase Database · checked Sep 17, 2026
8	Precision Heating LTD	Indirect evidence	Ballycoolin, IrelandHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Welcome Precision Heating is one of Ireland's leading suppliers of heating and renewable energy products to the building and construction Industry.” Source: RevenueBase Database · checked Sep 17, 2026
9	Breffni Insulation	Partial evidence	Kilnaleck, IrelandHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Breffni Insulation was founded in 2006 and the company is registered and compliant with standards as per the National Standards Authority of Ireland (NSAI), Sustainable Energy…” Source: RevenueBase Database · checked Sep 17, 2026
10	Isopartner Technical Insulation Solutions LTD	Indirect evidence	Ballycoolin, IrelandHQ checked Sep 17, 2026	51-200	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
11	Cooper Insulation LTD	Indirect evidence	Kells, IrelandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
12	Buildtec Acoustics	Partial evidence	Monaghan, IrelandHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “Buildtec is a leading provider of acoustic / sound insulation and anti-vibration materials and bearings to the Irish construction industry.” Source: RevenueBase Database · checked Sep 17, 2026
13	Eurospec Insulation, Drywall & Facades	Partial evidence	Drogheda, IrelandHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Eurospec Insulation, Drywall & Facades is a leading independent distributor of thermal and acoustic insulation, fire protection and Drywall materials, and Facades, from well-known…” Source: RevenueBase Database · checked Sep 17, 2026
14	Altherm ICF	Indirect evidence	Santry, IrelandHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “The Altherm ICF System is a modern method of construction that helps you to build better, more comfortable and energy-efficient homes, faster.” Source: RevenueBase Database · checked Sep 17, 2026
15	Emco Projects	Indirect evidence	Clane, IrelandHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “EMCO has been supplying and installing Insulated panels and doors to the Irish Market since 1998.” Source: RevenueBase Database · checked Sep 17, 2026
16	Castleforms LTD	Partial evidence	Co. Laois, IrelandHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Castleforms Ltd is a manufacturer of high-quality Expanded Polystyrene (EPS) insulated products and systems that are used in the new build sector based in Portlaoise, Co.” Source: RevenueBase Database · checked Sep 17, 2026
17	IPS COR Services Limited	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	6 contacts →
	Partial evidence “Experienced and trusted supplier of industrial insulation, ventilation and scaffolding solutions along with manpower services.” Source: RevenueBase Database · checked Sep 17, 2026
18	Southern Building Products LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Southern Building products offer Ireland's most comprehensive range of ventilation products, providing quality solutions for eaves, slate, tile and ridge, as well as full range of…” Source: RevenueBase Database · checked Sep 17, 2026
19	Energy Saver Insulations	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “At Energy Saver Insulation (ESI), we are committed to helping you save money through our technical expertise and Industry Knowledge.” Source: RevenueBase Database · checked Sep 17, 2026
20	HI Therm Homes	Partial evidence	Co Laois, IrelandHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Precast concrete manufacturer & installer of highly insulated structures for residential homes” Source: RevenueBase Database · checked Sep 17, 2026
21	Kingdom Installation LTD	Indirect evidence	Abbeydorney, IrelandHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “AWARD winning Kingdom Installation Ltd is a privately owned company with over 20 years’ experience in the supply and installation of energy efficiency solutions to the Domestic…” Source: RevenueBase Database · checked Sep 17, 2026
22	Passive Sills	Indirect evidence	Cork, IrelandHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Poly Passive Mouldings is the leading specialist provider of Super Lightweight, Thermally Efficient, & Cost effective Window Sills, Oversills, and Insulated Thresholds Compliant…” Source: RevenueBase Database · checked Sep 17, 2026
23	Brusna	Partial evidence	Enniscrone, IrelandHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Brusna is an SEAI-registered home insulation and retrofitting specialist operating across the North West of Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
24	Innovate Insulation	Partial evidence	Dublin 15, IrelandHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Ireland’s top insulation company to insulate commercial, residential, and industrial buildings.” Source: RevenueBase Database · checked Sep 17, 2026
25	Greenland ECO Construction LTD	Partial evidence	Boycetown, IrelandHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “External Insulation Experts Over 20yrs experience in the building trade We specialise in external insulation and retrofits - Dublin, Kildare and the wider Leinster region.” 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 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 insulation manufacturers.
Partial evidence: Its own public description names part of insulation manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 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 89 insulation manufacturers based in Ireland

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Insulation manufacturers based in Ireland at a glance

As of Sep 17, 2026

42.6%Verified-email coverage

21.6Average contacts per company

11-50Median size (employees)

11.2%Largest-city concentration · Dublin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 89 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 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 Ireland whose own description of what they do matches “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 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 insulation manufacturers, and records with no verified work email. Companies headquartered outside Ireland 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, 818 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.

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 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 insulation manufacturers are there based in Ireland?

RevenueBase identified 89 insulation manufacturers headquartered in Ireland 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?

Kingspan Group, headquartered in Kingscourt, tops this list with the largest team on record.

Which city has the most insulation manufacturers?

Dublin leads with 10 headquartered companies, followed by Cork (3) and Castleblayney (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 818 verified decision-maker contacts tracked across these 89 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.