Company lists · Data refreshed September 2026

Top 25 Custom window builders worldwide

Name: Custom window builders worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 14,212 companies tracked

RevenueBase identified 14,212 custom window builders worldwide as of September 2026 and tracks 157,169 professional contacts across them, including 33,146 with verified work emails. The United States is the largest market and London the largest hub.

This list covers custom window builders 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 19, 2026. Country and city lists for custom window builders 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 19, 2026 86% judged on-target in blind review

14,212Companies

157,169Contacts tracked

33,146Verified emails

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The 25 largest custom window builders worldwide

Ranked by team size

Top 25 of 14,212 custom window builders worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to custom window builders: 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	Renewal By Andersen	Partial evidence	Cottage Grove, MN, United StatesHQ checked Sep 19, 2026	5,001-10,000	5,105 contacts →
	Partial evidence “Renewal by Andersen is the full-service window and door replacement division of Andersen Corporation, a trusted name in quality and innovation for over 120 years.” Source: RevenueBase Database · checked Sep 19, 2026
2	Andersen Corporation	Partial evidence	Bayport, MN, United StatesHQ checked Sep 19, 2026	10001+	4,782 contacts →
	Partial evidence “For more than 121 years, Andersen has designed, manufactured, and marketed premium windows and doors.” Source: RevenueBase Database · checked Sep 19, 2026
3	Pella Corporation	Partial evidence	Pella, IA, RussiaHQ checked Sep 19, 2026	10001+	4,073 contacts →
	Partial evidence “As the #1 most-preferred national window and door brand by homeowners across the country, Pella Corporation leads the industry in innovation and design.” Source: RevenueBase Database · checked Sep 19, 2026
4	Jeld-Wen, INC	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 19, 2026	10001+	3,943 contacts →
	Partial evidence “JELD-WEN is a leading global designer, manufacturer and distributor of high-performance interior and exterior doors, windows, and related building products serving the new…” Source: RevenueBase Database · checked Sep 19, 2026
5	Marvin	Partial evidence	Warroad, MN, IndiaHQ checked Sep 19, 2026	5,001-10,000	2,650 contacts →
	Partial evidence “At Marvin, we’re driven to help customers find inspiration and create spaces designed around the way they live.” Source: RevenueBase Database · checked Sep 19, 2026
6	Fenesta Windows	Indirect evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	5,001-10,000	1,446 contacts →
	Indirect evidence “Fenesta is a part of DCM Shriram Group which was established in 1889 and has a turnover of INR 12,741 Crore as of FY 2025.” Source: RevenueBase Database · checked Sep 19, 2026
7	PLY GEM	Partial evidence	Cary, NC, United StatesHQ checked Sep 19, 2026	10001+	1,323 contacts →
	Partial evidence “Based in Cary, NC, Ply Gem is North America's leading manufacturer of exterior building materials, including windows, siding, stone, and 40 other categories.” Source: RevenueBase Database · checked Sep 19, 2026
8	Milgard Windows And Doors	Partial evidence	Tacoma, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,285 contacts →
	Partial evidence “Milgard Windows & Doors manufactures high-quality, innovative replacement windows and patio doors for home improvement projects as well as new construction windows and patio doors…” Source: RevenueBase Database · checked Sep 19, 2026
9	West Shore Home	Indirect evidence	Mechanicsburg, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,225 contacts →
	Indirect evidence “Since 2006, West Shore Home has continued to change the face of home improvement at the intersection of quality and convenience.” Source: RevenueBase Database · checked Sep 19, 2026
10	Quanex	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,051 contacts →
	Indirect evidence “At Quanex (NYSE: NX), we are a global manufacturing company serving OEMs across fenestration, cabinetry, solar, refrigeration, and outdoor living markets.” Source: RevenueBase Database · checked Sep 19, 2026
11	Champion Windows & Home Exteriors	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 19, 2026	1,001-5,000	948 contacts →
	Partial evidence “With over six decades of experience and expertise, Champion Windows and Home Exteriors, a Great Day Improvements brand, is one of the nation’s leading home improvement companies.” Source: RevenueBase Database · checked Sep 19, 2026
12	Atrium Windows & Doors	Strong evidence	United StatesHQ checked Sep 19, 2026	1,001-5,000	788 contacts →
	Strong evidence “For more than 50 years, Atrium Corporation has offered the highest quality window and door products to builders, contractors and distributors in the residential construction…” Source: RevenueBase Database · checked Sep 19, 2026
13	Window Nation	Partial evidence	Fulton, MD, United StatesHQ checked Sep 19, 2026	501-1,000	754 contacts →
	Partial evidence “At Window Nation, we know replacement windows.” Source: RevenueBase Database · checked Sep 19, 2026
14	Eko-Okna S.A	Indirect evidence	Pietrowice Wielkie, PolandHQ checked Sep 19, 2026	10001+	716 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	ES Latam	Indirect evidence	Barranquilla, ColombiaHQ checked Sep 19, 2026	5,001-10,000	654 contacts →
	Indirect evidence “Durante más de 40 años, hemos sido líderes en la industria del vidrio, el metal y las ventanas, siendo la compañía número 1 en América en la fabricación de productos para la…” Source: RevenueBase Database · checked Sep 19, 2026
16	Alumil	Indirect evidence	N. Efkarpia, GreeceHQ checked Sep 19, 2026	1,001-5,000	578 contacts →
	Indirect evidence “Innovative Aluminium Solutions \| Global Presence \| Certified Excellence With over 35 years of experience and more than 3.200 employees, ALUMIL is a globally recognized leader in…” Source: RevenueBase Database · checked Sep 19, 2026
17	TRYBA	Indirect evidence	Gundershoffen, FranceHQ checked Sep 19, 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 19, 2026
18	Odl, INC	Partial evidence	Zeeland, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	523 contacts →
	Partial evidence “Driven by continual innovation and trusted customer partnerships, ODL is a visionary building products leader delivering a full breadth of high-quality door and insulated glass…” Source: RevenueBase Database · checked Sep 19, 2026
19	K Line France Groupe Liebot	Indirect evidence	Les Herbiers, FranceHQ checked Sep 19, 2026	1,001-5,000	521 contacts →
	Indirect evidence “Filiale du Groupe Liébot, K•LINE est une entreprise familiale vendéenne spécialisée dans la fabrication de menuiseries aluminium.” Source: RevenueBase Database · checked Sep 19, 2026
20	Amesburytruth	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	508 contacts →
	Indirect evidence “AmesburyTruth is a part of Quanex Hardware Solutions, a segment of Quanex (NYSE: NX)-a global, publicly traded manufacturing company committed to delivering innovative solutions…” Source: RevenueBase Database · checked Sep 19, 2026
21	State Window Corporation	Strong evidence	Vaughan, ON, CanadaHQ checked Sep 19, 2026	501-1,000	452 contacts →
	Strong evidence “State Window Corporation offers complete design, engineering, manufacturing and installation of custom window wall systems.” Source: RevenueBase Database · checked Sep 19, 2026
22	Provia	Partial evidence	Sugarcreek, OH, United StatesHQ checked Sep 19, 2026	1,001-5,000	451 contacts →
	Partial evidence “ProVia is a leading manufacturer of professional-class entry doors, storm doors, patio doors, windows, vinyl siding, manufactured stone and metal roofing.” Source: RevenueBase Database · checked Sep 19, 2026
23	YKK AP America INC	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	427 contacts →
	Partial evidence “YKK AP America is the North American arm of the global YKK AP Group-an innovation-driven, award-winning manufacturer of commercial façade systems and residential windows and doors.” Source: RevenueBase Database · checked Sep 19, 2026
24	Bradnam's Windows & Doors	Strong evidence	Boondall, AustraliaHQ checked Sep 19, 2026	1,001-5,000	380 contacts →
	Strong evidence “Bradnam’s Windows and Doors is one of Australia’s most respected aluminium joinery manufacturers, supplying high quality product to architects, designers, builders and home…” Source: RevenueBase Database · checked Sep 19, 2026
25	ALL Weather At Home	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	1,001-5,000	373 contacts →
	Partial evidence “All Weather at Home is Canada's largest privately owned window and door manufacturer.” Source: RevenueBase Database · checked Sep 19, 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: custom window builders. 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 custom window builders.
Partial evidence: Its own public description names part of custom window builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom window builders. 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 14,212 custom window builders worldwide

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Custom window builders worldwide at a glance

As of Sep 19, 2026

21.1%Verified-email coverage

11.1Average contacts per company

11-50Median size (employees)

0.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

6,217

11-50

5,049

51-200

1,864

201-500

490

501-1,000

148

1,001-5,000

121

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 custom window builders, 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 custom window builders are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “custom window builders”. 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 custom window builders), 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 custom window builders, 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, 33,146 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 19, 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.

Custom window builders by location

36 lists · largest first

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

Countries

Cities

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 custom window builders, 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 custom window builders are there worldwide?

RevenueBase identified 14,212 custom window builders 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?

Renewal By Andersen, headquartered in Cottage Grove, tops this list with the largest team on record.

Which country has the most custom window builders?

The United States leads with 2,713 companies, followed by the United Kingdom (1,390) and Germany (1,073). Every custom window builders list by country and city is linked on this page.

Which city has the most custom window builders?

London leads with 106 headquartered companies, followed by Sao Paulo (69) and New York (49).

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 33,146 verified decision-maker contacts tracked across these 14,212 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 19, 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.