Company lists · Data refreshed September 2026

Top 16 Insulation and air sealing companies based in Denmark

RevenueBase identified 61 insulation and air sealing companies headquartered in Denmark as of September 2026 and tracks 523 professional contacts across them, including 49 with verified work emails. Brondby is the largest hub.

This list covers insulation and air sealing companies headquartered in Denmark, 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 20, 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 20, 2026 86% judged on-target in blind review
61Companies
523Contacts tracked
49Verified emails
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The 16 largest insulation and air sealing companies based in Denmark

Ranked by team size
Top 16 of 61 insulation and air sealing companies based in Denmark, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to insulation and air sealing companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceVedbaek, DenmarkHQ checked Sep 20, 202611-5056 contacts →

Partial evidence

“CT-TECHNOLOGIES is specialized in designing, supplying materials and equipment for insulation of Cold Stores and Food Processing Plants based on specific demands from our clients.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceHinnerup, DenmarkHQ checked Sep 20, 202651-20033 contacts →

Indirect evidence

“Danmarks førende tagfirma med over 50 års erfaring.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceHavdrup, DenmarkHQ checked Sep 20, 202651-20018 contacts →

Indirect evidence

“KlimaGruppen ApS (KG) arbejder primært med ventilation.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceSunds, DenmarkHQ checked Sep 20, 202611-5018 contacts →

Indirect evidence

“Haunstrup Teknisk Isolering tilbyder vores industri- og erhvervskunder gennemtænkte vvs, ventilations, og industriløsninger, hvor kvalitet og sikring er essentielle elementer.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceVildbjerg, DenmarkHQ checked Sep 20, 202611-5017 contacts →

Indirect evidence

“Nviro er leverandør af biobaserede isoleringsløsninger til bæredygtigt byggeri.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceAllerød, DenmarkHQ checked Sep 20, 202611-5012 contacts →

Indirect evidence

“Ljungdahl er Soudal Danmarks projektafdeling og byggebranchens specialist i konstruktionstætninger.”

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceOdense Sø, DenmarkHQ checked Sep 20, 20261-106 contacts →

Partial evidence

“Hotpaper is a construction company that carries out re-insulation and insulation of new constructions, specialized in cavity walls, lofts and floor separations.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceBrondby, DenmarkHQ checked Sep 20, 20261-105 contacts →

Indirect evidence

“e-consult ApS er en af landets førende indenfor energioptimering af bygninger.”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceCopenhagen, DenmarkHQ checked Sep 20, 202651-2004 contacts →

Indirect evidence

“We provide services and installation to reduce the energy consumption of commercial and industrial buildings.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceMiddelfart, DenmarkHQ checked Sep 20, 202611-503 contacts →

Indirect evidence

“City Group Brandsikring A/S er etableret i 2017, men vi har været i markedet for brandisolering af byggeri siden 2008.”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceHjørring, DenmarkHQ checked Sep 20, 20261-102 contacts →

Indirect evidence

“DN Isolering er specialiserede i papirisolering.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceBallerup, DenmarkHQ checked Sep 20, 20261-102 contacts →

Indirect evidence

“Ballerup Isolering A/S påtager sig opgaver for enkeltpersoner samt private og offentlige virksomheder.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceRødekro, DenmarkHQ checked Sep 20, 202611-501 contacts →

Indirect evidence

“Dansk Isolering beskæftiger, afhængig af sæson, 15-22 højt specialiserede medarbejdere, der løser alle slags isoleringsopgaver i hele landet.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceSkovlunde, DenmarkHQ checked Sep 20, 202611-501 contacts →

Indirect evidence

“IC Isolering ApS er et kvalitetsbevidst teknisk isoleringsfirma med erfaring tilbage fra 1998.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceKøbenhavns, DenmarkHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“Hos Calidî Isolering, får du en god ordentlig service, leveret til tiden.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceSlagelse, DenmarkHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“ISOLINK er en rådgivende-ingeniør virksomhed, som favner bredt indenfor indeklimaundersøgelser og energimærkning Dårligt indeklima kan være grundet i mange forskellige parametre…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 16 of 61 insulation and air sealing companies based in Denmark

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Insulation and air sealing companies based in Denmark at a glance

As of Sep 20, 2026
9.4%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
3.3%Largest-city concentration · Brondby
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
16
51-200
6
201-500
1

Email recency for this list is measured worldwide rather than for Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, over 61 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 and air sealing 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 Denmark whose own description of what they do matches “insulation and air sealing 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 insulation and air sealing 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 insulation and air sealing companies, and records with no verified work email. Companies headquartered outside Denmark 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, 49 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 20, 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 and air sealing 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 insulation and air sealing companies are there based in Denmark?

RevenueBase identified 61 insulation and air sealing companies headquartered in Denmark 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?

Ct-Technologies, headquartered in Vedbaek Capital Of Denmark, tops this list with the largest team on record.

Which city has the most insulation and air sealing companies?

Brondby leads with 2 headquartered companies, followed by Hinnerup (2) and Horsens (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 49 verified decision-maker contacts tracked across these 61 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 20, 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.