Company lists · Data refreshed September 2026

Top 25 Sash window manufacturers worldwide

Name: Sash window manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 3,424 companies tracked

RevenueBase identified 3,424 sash window manufacturers worldwide as of September 2026 and tracks 22,598 professional contacts across them, including 6,196 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers sash window manufacturers worldwide, 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 30, 2026. Country and city lists for sash window manufacturers follow the table.

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 30, 2026 86% judged on-target in blind review

3,424Companies

22,598Contacts tracked

6,196Verified emails

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The 25 largest sash window manufacturers worldwide

Ranked by team size

Top 25 of 3,424 sash window manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to sash window 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	TRYBA	Indirect evidence	Gundershoffen, FranceHQ checked Sep 30, 2026	501-1,000	529 contacts →
	Indirect evidence “Depuis 1980, TRYBA se positionne comme pionnier et leader français dans le domaine des menuiseries extérieures : fenêtres, portes, volets, pergolas.” Source: RevenueBase Database · checked Sep 30, 2026
2	Builders First Source	Partial evidence	United StatesHQ checked Sep 30, 2026	201-500	348 contacts →
	Partial evidence “If you found a window company that gave you absolutely everything you wanted, wouldn't that be absolutely perfect?” Source: RevenueBase Database · checked Sep 30, 2026
3	Kolbe Windows & Doors	Partial evidence	Wausau, WI, United StatesHQ checked Sep 30, 2026	1,001-5,000	332 contacts →
	Partial evidence “After 75 years, Kolbe Windows & Doors is best known for superior quality, custom craftsmanship, and attention to detail.” Source: RevenueBase Database · checked Sep 30, 2026
4	Atlantem	Indirect evidence	Noyal-pontivy, FranceHQ checked Sep 30, 2026	1,001-5,000	284 contacts →
	Indirect evidence “Activité menuiserie de HERIGE Industries, Atlantem propose une gamme complète de produits fabriqués en France couvrant tous les besoins en ouvertures et fermetures pour l’habitat…” Source: RevenueBase Database · checked Sep 30, 2026
5	Groupe Lorillard	Indirect evidence	Chartres, FranceHQ checked Sep 30, 2026	1,001-5,000	277 contacts →
	Indirect evidence “Le Groupe Lorillard est un acteur industriel spécialisé dans l’enveloppe globale des bâtiments, en neuf comme en rénovation.” Source: RevenueBase Database · checked Sep 30, 2026
6	Belisol	Partial evidence	Hasselt, BelgiumHQ checked Sep 30, 2026	501-1,000	271 contacts →
	Partial evidence “For more than 48 years, Belisol has been a specialist in windows, doors and sliding doors in PVC, aluminium and wood.” Source: RevenueBase Database · checked Sep 30, 2026
7	Weather Shield Windows And Doors	Partial evidence	Medford, United StatesHQ checked Sep 30, 2026	1,001-5,000	257 contacts →
	Partial evidence “Weather Shield has been committed to making windows and doors the best way we know how- by putting the wants of our customers first.” Source: RevenueBase Database · checked Sep 30, 2026
8	Finstral	Indirect evidence	Unterinn/ritten, ItalyHQ checked Sep 30, 2026	1,001-5,000	248 contacts →
	Indirect evidence “Based in South Tyrol, Italy, Finstral is held by the Oberrauch family, who founded the company in 1969.” Source: RevenueBase Database · checked Sep 30, 2026
9	First Home Improvements	Indirect evidence	Norwich, United KingdomHQ checked Sep 30, 2026	201-500	248 contacts →
	Indirect evidence “First Home Improvements traces its roots to the 1970's and prides itself on installing highly innovative A rated energy saving products unrivaled by many others within our…” Source: RevenueBase Database · checked Sep 30, 2026
10	Starline Windows	Partial evidence	Surrey, BC, CanadaHQ checked Sep 30, 2026	1,001-5,000	246 contacts →
	Partial evidence “Starline Windows has been proudly designing and building windows & balcony doors for over 50 years, providing quality, comfort and peace of mind to our customers.” Source: RevenueBase Database · checked Sep 30, 2026
11	Trend Windows & Doors	Partial evidence	Girraween, AustraliaHQ checked Sep 30, 2026	501-1,000	183 contacts →
	Partial evidence “Trend Windows and Doors was formed in 1968 by partnership manufacturing timber windows and doors.” Source: RevenueBase Database · checked Sep 30, 2026
12	Egokiefer AG	Indirect evidence	Diepoldsau, SwitzerlandHQ checked Sep 30, 2026	201-500	177 contacts →
	Indirect evidence “EgoKiefer is the No.” Source: RevenueBase Database · checked Sep 30, 2026
13	Nordan UK LTD	Strong evidence	Livingston, United KingdomHQ checked Sep 30, 2026	51-200	154 contacts →
	Strong evidence “NorDan is one of Europe’s leading manufacturers of high performance windows, doors and smart accessories.” Source: RevenueBase Database · checked Sep 30, 2026
14	CR Smith	Indirect evidence	Dunfermline, United KingdomHQ checked Sep 30, 2026	201-500	150 contacts →
	Indirect evidence “With the vision of our Chairman, Gerard Eadie CBE, CR Smith has grown over the past 50 years to become Scotland’s leading home improvement company.” Source: RevenueBase Database · checked Sep 30, 2026
15	Schipper Kozijnen	Indirect evidence	Opmeer, NetherlandsHQ checked Sep 30, 2026	201-500	147 contacts →
	Indirect evidence “Schipper Kozijnen is een familiebedrijf met 250 betrokken medewerkers.” Source: RevenueBase Database · checked Sep 30, 2026
16	Intus Windows	Partial evidence	Lorton, VA, United StatesHQ checked Sep 30, 2026	501-1,000	143 contacts →
	Partial evidence “INTUS creates high performing windows and doors that conserve energy, increase thermal performance, and reduce noise.” Source: RevenueBase Database · checked Sep 30, 2026
17	Fenêtréa	Indirect evidence	Beignon, FranceHQ checked Sep 30, 2026	201-500	132 contacts →
	Indirect evidence “FenêtréA améliore le confort de vie et contribue à la réduction de l'empreinte écologique de l'habitat, en concevant et fabriquant des fenêtres, portes et volets toujours plus…” Source: RevenueBase Database · checked Sep 30, 2026
18	MÉO Groupe Liebot	Indirect evidence	Cugand, FranceHQ checked Sep 30, 2026	201-500	128 contacts →
	Indirect evidence “Créateur du concept bois-aluminium en 1983, MéO est le 1er fabricant français de menuiseries bois-aluminium sur mesure, décoratives, accessibles et performantes, destinées aux…” Source: RevenueBase Database · checked Sep 30, 2026
19	Nationwide Windows And Doors	Strong evidence	Rugby, United KingdomHQ checked Sep 30, 2026	501-1,000	126 contacts →
	Strong evidence “Manufacturers and Installers of PVCu Windows and Doors,Composite and Fire Doors and Conservatories to the Retail, Trade and Commercial Sector.” Source: RevenueBase Database · checked Sep 30, 2026
20	Skyline Windows	Partial evidence	Bronx, NY, United StatesHQ checked Sep 30, 2026	201-500	118 contacts →
	Partial evidence “Skyline Windows is a fourth-generation, family owned and operated company.” Source: RevenueBase Database · checked Sep 30, 2026
21	Emplas Window Systems	Partial evidence	Wellingborough, United KingdomHQ checked Sep 30, 2026	201-500	117 contacts →
	Partial evidence “Emplas is the window and door fabricator of choice, offering a complete range of premium-quality, high-security, energy-efficient windows and doors for the trade installer, new…” Source: RevenueBase Database · checked Sep 30, 2026
22	Outline Vinduer A S	Indirect evidence	Farsø, DenmarkHQ checked Sep 30, 2026	201-500	112 contacts →
	Indirect evidence “OUTLINE Vinduer er en af Danmarks førende producenter af energioptimerede vinduer og døre i træ og træ/alu til alle typer boliger.” Source: RevenueBase Database · checked Sep 30, 2026
23	LUX Windows & Doors	Partial evidence	Calgary, AB, CanadaHQ checked Sep 30, 2026	201-500	107 contacts →
	Partial evidence “An industry leader in the design, manufacturing and installation of quality windows and doors, Lux is a family-owned and managed business based in Calgary, Alberta, Canada.” Source: RevenueBase Database · checked Sep 30, 2026
24	KAT UK Macclesfield	Strong evidence	Macclesfield, United KingdomHQ checked Sep 30, 2026	51-200	82 contacts →
	Strong evidence “KAT UK is a Macclesfield based manufacturer of specialist glazing products, including Aluminium and PVCu bifold doors, sliding patio doors, entrance doors, French doors, windows…” Source: RevenueBase Database · checked Sep 30, 2026
25	Winco Window	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 30, 2026	51-200	81 contacts →
	Indirect evidence “Our history of innovation is coupled with expertise in historic replication.” Source: RevenueBase Database · checked Sep 30, 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: sash window 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 sash window manufacturers.
Partial evidence: Its own public description names part of sash window manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sash window 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 3,424 sash window manufacturers worldwide

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Sash window manufacturers worldwide at a glance

As of Sep 30, 2026

27.4%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,762

11-50

1,098

51-200

360

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 sash window 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.
Coverage: Every country. Country and city lists for sash window manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sash window 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 sash window 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 sash window manufacturers, and records with no verified work email.
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, 6,196 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 30, 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.

Sash window manufacturers by location

15 lists · largest first

Every Sash window manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Sash window manufacturers based in London, United Kingdom75

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 sash window 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 sash window manufacturers are there worldwide?

RevenueBase identified 3,424 sash window manufacturers worldwide 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?

TRYBA, headquartered in Gundershoffen, tops this list with the largest team on record.

Which country has the most sash window manufacturers?

The United Kingdom leads with 1,196 companies, followed by the United States (281) and France (221). Every sash window manufacturers list by country and city is linked on this page.

Which city has the most sash window manufacturers?

London leads with 79 headquartered companies, followed by Norwich (17) and Nottingham (13).

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 6,196 verified decision-maker contacts tracked across these 3,424 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 30, 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.