Company lists · Data refreshed September 2026

Top 25 Insulated glass unit manufacturers based in Germany

Name: Insulated glass unit manufacturers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 514 companies tracked

RevenueBase identified 514 insulated glass unit manufacturers headquartered in Germany as of September 2026 and tracks 3,274 professional contacts across them, including 831 with verified work emails. Berlin is the largest hub.

This list covers insulated glass unit manufacturers headquartered in Germany, 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

514Companies

3,274Contacts tracked

831Verified emails

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The 25 largest insulated glass unit manufacturers based in Germany

Ranked by team size

Top 25 of 514 insulated glass unit manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insulated glass unit 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	Salamander Mywindow	Indirect evidence	Türkheim/unterallgäu, GermanyHQ checked Sep 17, 2026	1,001-5,000	202 contacts →
	Indirect evidence “Salamander Industrie-Produkte GmbH and its brand Salamander Window & Door Systems with headquarters in Türkheim/Unterallgäu is one of the leading European quality providers for…” Source: RevenueBase Database · checked Sep 17, 2026
2	Solarlux	Indirect evidence	Melle, GermanyHQ checked Sep 17, 2026	501-1,000	180 contacts →
	Indirect evidence “Das niedersächsische Familienunternehmen aus Bissendorf bei Osnabrück hat sich in fast 30 Jahren national und international einen Namen gemacht.” Source: RevenueBase Database · checked Sep 17, 2026
3	AGC Interpane	Partial evidence	Lauenförde, GermanyHQ checked Sep 17, 2026	1,001-5,000	142 contacts →
	Partial evidence “AGC Interpane ist Teil von AGC Glass Europe und steht für leistungsstarke Glaslösungen für die Architektur und den Fensterbau.” Source: RevenueBase Database · checked Sep 17, 2026
4	Euroglas	Indirect evidence	Haldensleben, GermanyHQ checked Sep 17, 2026	501-1,000	106 contacts →
	Indirect evidence “For over 20 years, we have been burning for the unique material that is made of quartz sand, fire and energy.” Source: RevenueBase Database · checked Sep 17, 2026
5	Pilkington Holding Gmbh NSG Group	Indirect evidence	Gelsenkirchen, GermanyHQ checked Sep 17, 2026	1,001-5,000	97 contacts →
	Indirect evidence “Die NSG Group ist einer der weltweit führenden Hersteller von Glas und Glasprodukten für die Bereiche Architectural (Glas für Neubauten, Renovation und Solaranwendungen)…” Source: RevenueBase Database · checked Sep 17, 2026
6	Hueck System Gmbh & Co. KG	Indirect evidence	Lüdenscheid, GermanyHQ checked Sep 17, 2026	201-500	89 contacts →
	Indirect evidence “HUECK by Hydro ist ein Unternehmen der Hydro Building Systems und gehört zu den führenden Anbietern von Fenster, Türen- und Fassadensystemen aus Aluminium.” Source: RevenueBase Database · checked Sep 17, 2026
7	Dobler Metallbau Gmbh	Indirect evidence	München, GermanyHQ checked Sep 17, 2026	201-500	87 contacts →
	Indirect evidence “The Dobler Metallbau Group is an international company.” Source: RevenueBase Database · checked Sep 17, 2026
8	Raico Bautechnik Gmbh	Indirect evidence	Pfaffenhausen, GermanyHQ checked Sep 17, 2026	51-200	84 contacts →
	Indirect evidence “RAICO Bautechnik GmbH develops and distributes high-quality glazing systems for curtain walling, aluminium windows, and aluminium doors.” Source: RevenueBase Database · checked Sep 17, 2026
9	Wicona	Indirect evidence	Ulm, GermanyHQ checked Sep 17, 2026	501-1,000	82 contacts →
	Indirect evidence “WICONA by Hydro offers with over 70 years’ experience functional and energy-efficient façades, windows, door and sliding solutions with the highest quality and performance…” Source: RevenueBase Database · checked Sep 17, 2026
10	Beck Heun Gmbh	Indirect evidence	Mengerskirchen, GermanyHQ checked Sep 17, 2026	501-1,000	61 contacts →
	Indirect evidence “Beck+Heun ist Entwickler, Hersteller und Verarbeiter von energetisch hocheffizienten Systemen rund um das Fenster.” Source: RevenueBase Database · checked Sep 17, 2026
11	Gutmann Bausysteme Gmbh	Indirect evidence	Weißenburg In Bayern, GermanyHQ checked Sep 17, 2026	201-500	57 contacts →
	Indirect evidence “GUTMANN Bausysteme GmbH is an international supplier of system-based aluminium solutions for buildings.” Source: RevenueBase Database · checked Sep 17, 2026
12	Sedak Gmbh & Co. KG	Partial evidence	Gersthofen, GermanyHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Our many years of experience in the processing and treatment of curved and flat glass enables us to offer our customers full-service glass solutions up to 3.6 m x 20 m.” Source: RevenueBase Database · checked Sep 17, 2026
13	Feldhaus Fenster Fassaden Gmbh & Co. KG	Indirect evidence	Emsdetten, GermanyHQ checked Sep 17, 2026	201-500	43 contacts →
	Indirect evidence “FELDHAUS Fenster + Fassaden GmbH & Co.” Source: RevenueBase Database · checked Sep 17, 2026
14	Gebrüder Schneider Fensterfabrik Gmbh & Co.Kg	Indirect evidence	Stimpfach, GermanyHQ checked Sep 17, 2026	201-500	40 contacts →
	Indirect evidence “THE FACADE COMPANY - Wir als Gebrüder Schneider Fensterfabrik GmbH & Co.” Source: RevenueBase Database · checked Sep 17, 2026
15	Gayko Fenster-Türenwerk Gmbh	Indirect evidence	Wilnsdorf, GermanyHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “GAYKO Fenster-Türenwerk GmbH is a successful and innovative, constantly growing company that offers unique solutions for builders, renovators and architects.” Source: RevenueBase Database · checked Sep 17, 2026
16	Akotherm Gmbh	Indirect evidence	Bendorf, GermanyHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “AKOTHERM® GmbH has been established as an innovative system supplier for aluminum windows, doors, and facades on the German market and abroad for over 50 years.” Source: RevenueBase Database · checked Sep 17, 2026
17	Schollglas Gmbh	Indirect evidence	Barsinghausen, GermanyHQ checked Sep 17, 2026	1,001-5,000	26 contacts →
	Indirect evidence “Die SCHOLLGLAS Unternehmensgruppe ist seit 1969 ein konzernunabhängiges Familienunternehmen im Flachglasmarkt.” Source: RevenueBase Database · checked Sep 17, 2026
18	Gerdes Gmbh	Indirect evidence	Lengerich, GermanyHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “We are your partner for custom-made windows, entrance doors, sliding doors, façades and fire protection doors.” Source: RevenueBase Database · checked Sep 17, 2026
19	Rupert APP Gmbh & CO	Indirect evidence	Leutkirch Im Allgäu, GermanyHQ checked Sep 17, 2026	201-500	26 contacts →
	Indirect evidence “Aus der im Jahre 1939 von Rupert App in Leutkirch gegründeten Schlosserei entwickelte sich ein leistungsfähiges Handwerksunternehmen mit drei modernen Fertigungsbetrieben.” Source: RevenueBase Database · checked Sep 17, 2026
20	Glassuisse Gmbh	Indirect evidence	Grünkraut, GermanyHQ checked Sep 17, 2026	1-10	26 contacts →
	Indirect evidence “Von Glasduschen und Spiegelschränken im Bad, über Arbeitsplatten und Hochschränke aus Glas in der Küche, Glaszäune und Verglasungen für Balkon und Terrasse im Außenbereich, bis zu…” Source: RevenueBase Database · checked Sep 17, 2026
21	PAX AG	Indirect evidence	Ingelheim, GermanyHQ checked Sep 17, 2026	501-1,000	24 contacts →
	Indirect evidence “Mit über 500 Mitarbeitenden und hochwertigen Produkten zählt die PaX-Gruppe zu den führenden Herstellern von Fenstern und Türen in Deutschland.” Source: RevenueBase Database · checked Sep 17, 2026
22	TMP Fenster Türen Gmbh	Indirect evidence	Bad Langensalza, GermanyHQ checked Sep 17, 2026	201-500	24 contacts →
	Indirect evidence “TMP® ist Ihr kompetenter Partner für Fenster, Türen und Fassaden.” Source: RevenueBase Database · checked Sep 17, 2026
23	Hapa AG Fenster Türen	Indirect evidence	Schorndorf, GermanyHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Isophon Glas Gmbh	Indirect evidence	Hannoversch Münden, GermanyHQ checked Sep 17, 2026	51-200	17 contacts →
	Indirect evidence “Welcome to isophon glas, your reliable partner from Hann.” Source: RevenueBase Database · checked Sep 17, 2026
25	Rossmanith Gmbh	Indirect evidence	Heidelberg, GermanyHQ checked Sep 17, 2026	51-200	16 contacts →
	Indirect evidence “Seit 1947 besteht unser Unternehmen am Standort Heidelberg.” 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: insulated glass unit 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 insulated glass unit manufacturers.
Partial evidence: Its own public description names part of insulated glass unit manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insulated glass unit 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 514 insulated glass unit manufacturers based in Germany

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Insulated glass unit manufacturers based in Germany at a glance

As of Sep 17, 2026

25.4%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · Berlin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

271

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 514 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 insulated glass unit 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 Germany whose own description of what they do matches “insulated glass unit 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 insulated glass unit 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 insulated glass unit manufacturers, and records with no verified work email. Companies headquartered outside Germany 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, 831 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 insulated glass unit 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 insulated glass unit manufacturers are there based in Germany?

RevenueBase identified 514 insulated glass unit manufacturers headquartered in Germany 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?

Salamander Mywindow, headquartered in Germany, tops this list with the largest team on record.

Which city has the most insulated glass unit manufacturers?

Berlin leads with 12 headquartered companies, followed by Sinsheim (5) and Bremen (4).

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 831 verified decision-maker contacts tracked across these 514 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.