Company lists · Data refreshed October 2026

Top 25 Building envelope improvement firms based in Belgium

Name: Building envelope improvement firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 182 companies tracked

RevenueBase identified 182 company matches for building envelope improvement firms associated with Belgium as of October 2026 and tracks 1,293 professional contacts across them, including 337 with verified work emails. Genk is the largest hub.

This list covers company matches for building envelope improvement firms associated with Belgium, 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 October 9, 2026.

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 Oct 9, 2026 How this list was built

182Companies

1,293Contacts tracked

337Verified emails

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The 25 largest building envelope improvement firms based in Belgium

Ranked by team size

Top 25 of 182 company matches for building envelope improvement firms based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Tectum Group	Exact match	Genk, BelgiumHQ recorded Oct 9, 2026	201-500	154 contacts →
	Exact match “Tectum Group is a Belgian family-owned company, founded in 1981, and a leading specialist in roofing and façade solutions.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Reno Energy	Exact match	Liège (angleur), BelgiumHQ recorded Oct 9, 2026	51-200	103 contacts →
	Exact match “Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	HD Systems	Exact match	Petit-rechain, BelgiumHQ recorded Oct 9, 2026	51-200	41 contacts →
	Exact match “HD Systems est votre partenaire de confiance pour tous vos projets de bardage, toiture et façonnage.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Isoproc	Exact match	Mechelen, BelgiumHQ recorded Oct 9, 2026	11-50	25 contacts →
	Exact match “Version FR ) ISOPROC produceert en verdeelt producten en totaaloplossingen voor de bouwschil van residentiële, appartements- en tertiaire gebouwen.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	QUITO	Exact match	Noville-les-bois, BelgiumHQ recorded Oct 9, 2026	1-10	24 contacts →
	Exact match “Quito existe pour offrir une solution coordonnée aux propriétaires cherchant à améliorer la performance énergétique de leur bien le plus simplement et esthétiquement possible afin…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Istema NV	Exact match	Ghent, BelgiumHQ recorded Oct 9, 2026	11-50	21 contacts →
	Exact match “ISTEMA is een gespecialiseerd ingenieurs- en studiebureau voor technieken en energie in gebouwen.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Zaman Yves & C	Exact match	Ghent, BelgiumHQ recorded Oct 9, 2026	51-200	21 contacts →
	Exact match “Zaman is een professionele technisch dienstverlener voor installaties op de professionele en industriële markt.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Deltha	Exact match	Diepenbeek, BelgiumHQ recorded Oct 9, 2026	11-50	21 contacts →
	Exact match “Deltha ontwerpt en bouwt uw gebouwinstallaties, verwarming, koeling, ventilatie, elektriciteit en sanitair.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Bouwmaterialen Modde	Exact match	Heule, BelgiumHQ recorded Oct 9, 2026	51-200	20 contacts →
	Exact match “Bent u een bouwprofessional of een handige doe-het-zelver?” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Isolution	Exact match	Namur, BelgiumHQ recorded Oct 9, 2026	11-50	19 contacts →
	Exact match “ISOLUTION est une société spécialisée dans l'isolation et la ventilation de bâtiment pour particuliers et professionnels, et ce depuis plus de 12 ans Aujourd'hui, Isolution compte…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Biesmans Group	Exact match	Genk, BelgiumHQ recorded Oct 9, 2026	501-1,000	19 contacts →
	Exact match “Biesmans Group is een innovatief en ambitieus familiebedrijf.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Climawest NV	Exact match	Zwevegem, BelgiumHQ recorded Oct 9, 2026	11-50	15 contacts →
	Exact match “Climawest NV is an installation company specialized in HVAC applications for businesses, offices, industry, retail, and private construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Hasmetal Sprl	Exact match	Lessines, BelgiumHQ recorded Oct 9, 2026	11-50	12 contacts →
	Exact match “Hasmetal is a facade company providing clients with solutions for building envelopes to their specific needs and requirements.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Roofcover	Exact match	2630 Aartselaar, BelgiumHQ recorded Oct 9, 2026	11-50	11 contacts →
	Exact match “Wij zijn uw betrouwbare partner voor alle dakwerken en gevelbekleding, zowel voor particuliere als professionele klanten.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Ferrum Industriebouwers	Exact match	Eksel, BelgiumHQ recorded Oct 9, 2026	51-200	11 contacts →
	Exact match “U specialist in staalbouwprojecten!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Bouw & Energie Advies By Studibo	Exact match	Genk, BelgiumHQ recorded Oct 9, 2026	11-50	9 contacts →
	Exact match “Bij B-EA (Bouw & Energie Advies) ondersteunen we bouwheren, architecten en ontwikkelaars met praktisch energieadvies voor nieuwbouw- en renovatieprojecten.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	CLEYS	Exact match	Waasmunster, BelgiumHQ recorded Oct 9, 2026	11-50	8 contacts →
	Exact match “Cleys bv is jouw specialist in energetische renovaties.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Benotec	Exact match	Mechelen, BelgiumHQ recorded Oct 9, 2026	11-50	7 contacts →
	Exact match “Beter renoveren of BENOveren doe je samen met BENOTEC.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	Naessens P	Exact match	Heusden, BelgiumHQ recorded Oct 9, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Baeck Cladding	Exact match	Wommelgem, BelgiumHQ recorded Oct 9, 2026	11-50	7 contacts →
	Exact match “Bij Baeck Cladding NV kan u terecht voor de technische voorbereiding en plaatsing van industriële gevelbekleding in staal en aluminium, Trespa wanden, aluminium luifels en…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Delta Thermic	Exact match	Herstal, BelgiumHQ recorded Oct 9, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Concept Color	Exact match	Verlaine, BelgiumHQ recorded Oct 9, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Isoleaz	Exact match	Kraainem, BelgiumHQ recorded Oct 9, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Argona Eg-Elec NV	Exact match	Turnhout, BelgiumHQ recorded Oct 9, 2026	11-50	6 contacts →
	Exact match “EG-elec nv werd in 2005 opgericht door Erwin Van Hoeck en Geert Cuypers en is inmiddels uitgegroeid tot een middelgroot installatiebedrijf met een 30-tal medewerkers.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	KDS DAK EN Gevel	Exact match	Beveren, BelgiumHQ recorded Oct 9, 2026	11-50	6 contacts →
	Exact match “Bij KDS draait het om méér dan een dak of gevel.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building envelope improvement firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 182 building envelope improvement firms based in Belgium

See the full list, filter by size, metro and specialty, and access 337 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building envelope improvement firms based in Belgium at a glance

As of Oct 9, 2026

26.1%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · Genk

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

112

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 182 companies.

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.
What qualifies: Company records associated with Belgium whose business descriptions match “building envelope improvement firms” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 337 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 October 9, 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.

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 “building envelope improvement firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building envelope improvement firms are there based in Belgium?

RevenueBase identified 182 company matches for building envelope improvement firms associated with Belgium as of October 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?

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

Which city has the most building envelope improvement firms?

Genk leads with 6 company records, followed by Hasselt (4) and Antwerp (3).

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 337 professional contacts with verified work emails tracked across these 182 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 October 9, 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.