Company lists · Data refreshed September 2026

Top 25 Window manufacturers based in Canada

Name: Window manufacturers based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 936 companies tracked

RevenueBase identified 936 window manufacturers headquartered in Canada as of September 2026 and tracks 10,560 professional contacts across them, including 3,436 with verified work emails. Toronto is the largest hub.

This list covers window manufacturers headquartered in Canada, 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.

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

936Companies

10,560Contacts tracked

3,436Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest window manufacturers based in Canada

Ranked by team size

Top 25 of 936 window manufacturers based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to 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	State Window Corporation	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 19, 2026	501-1,000	452 contacts →
	Partial evidence “State Window Corporation offers complete design, engineering, manufacturing and installation of custom window wall systems.” Source: RevenueBase Database · checked Sep 19, 2026
2	ALL Weather At Home	Strong evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	1,001-5,000	373 contacts →
	Strong evidence “All Weather at Home is Canada's largest privately owned window and door manufacturer.” Source: RevenueBase Database · checked Sep 19, 2026
3	Loewen	Indirect evidence	Steinbach, MB, CanadaHQ checked Sep 19, 2026	501-1,000	306 contacts →
	Indirect evidence “For luxury homeowners, and the architects, designers and custom builders who create their dreams, Loewen is the brand that delivers an unrivaled combination of artisanship…” Source: RevenueBase Database · checked Sep 19, 2026
4	Durabuilt Windows & Doors	Strong evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	501-1,000	302 contacts →
	Strong evidence “Durabuilt Windows & Doors has been recognized as the #1 ENERGY STAR® certified window and door manufacturer in Canada - a distinction earned through an unwavering commitment to…” Source: RevenueBase Database · checked Sep 19, 2026
5	Novatech	Strong evidence	Ste-julie, QC, CanadaHQ checked Sep 19, 2026	1,001-5,000	260 contacts →
	Strong evidence “Founded in 1982, Novatech Group employs over 1,500 people and is a leading manufacturer of components for the window and door industry.” Source: RevenueBase Database · checked Sep 19, 2026
6	Gentek Building Products - Canada	Indirect evidence	Burlington, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	250 contacts →
	Indirect evidence “Quality-crafted with attention to detail, Gentek products combine outstanding beauty and strength with the luxury of a low-maintenance finish.” Source: RevenueBase Database · checked Sep 19, 2026
7	Starline Windows	Partial evidence	Surrey, BC, CanadaHQ checked Sep 19, 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 19, 2026
8	Fenplast	Indirect evidence	Candiac, QC, CanadaHQ checked Sep 19, 2026	201-500	196 contacts →
	Indirect evidence “Fenplast est un manufacturier de portes et fenêtres en croissance, situé à Candiac sur la rive-sud de Montréal.” Source: RevenueBase Database · checked Sep 19, 2026
9	Centra Windows & Install Pros	Partial evidence	Langley, CanadaHQ checked Sep 19, 2026	201-500	170 contacts →
	Partial evidence “From window and door manufacturing, supply, and install to building envelope restorations, Centra Windows & Install Pros does it all.” Source: RevenueBase Database · checked Sep 19, 2026
10	Newmar Window Manufacturing INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	201-500	167 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
11	Groupe Lessard	Partial evidence	Laval, QC, CanadaHQ checked Sep 19, 2026	201-500	155 contacts →
	Partial evidence “Groupe Lessard is the leader in design, manufacturing and installation of intelligent building envelope systems, with a complete range of doors and windows, curtain walls and…” Source: RevenueBase Database · checked Sep 19, 2026
12	Kohltech Windows & Entrance Systems	Strong evidence	Debert, NS, CanadaHQ checked Sep 19, 2026	201-500	135 contacts →
	Strong evidence “Kohltech Windows & Entrance Systems is a leading manufacturer of high-quality, custom window and door products.” Source: RevenueBase Database · checked Sep 19, 2026
13	PLY GEM Canada	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	1,001-5,000	134 contacts →
	Indirect evidence “One Company.” Source: RevenueBase Database · checked Sep 19, 2026
14	Alumicor	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	201-500	125 contacts →
	Strong evidence “The Alumicor brand is a Canadian-based manufacturer of architectural aluminum windows, curtain wall, storefront, and entrances.” Source: RevenueBase Database · checked Sep 19, 2026
15	PH Tech	Indirect evidence	Lévis, QC, CanadaHQ checked Sep 19, 2026	201-500	123 contacts →
	Indirect evidence “At P.H.” Source: RevenueBase Database · checked Sep 19, 2026
16	LUX Windows & Doors	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 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 19, 2026
17	Ecoline Windows	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial evidence “We specialize in replacement windows for the residential market and work directly with homeowners.” Source: RevenueBase Database · checked Sep 19, 2026
18	Lepage Millwork	Indirect evidence	Rivière-du-loup, QC, CanadaHQ checked Sep 19, 2026	201-500	92 contacts →
	Indirect evidence “Notre savoir-faire qui prend racine dans des décennies d'expertise, c’est ça la force de Lepage Millwork.” Source: RevenueBase Database · checked Sep 19, 2026
19	North Star Windows & Doors	Partial evidence	St. Thomas, ON, CanadaHQ checked Sep 19, 2026	201-500	85 contacts →
	Partial evidence “At North Star, we are committed to manufacturing quality windows and doors, providing great service and delivering exceptional value.” Source: RevenueBase Database · checked Sep 19, 2026
20	Westeck Windows And Doors	Indirect evidence	Chilliwack, BC, CanadaHQ checked Sep 19, 2026	201-500	84 contacts →
	Indirect evidence “At Westeck, custom isn’t a feature we sell, it’s how we think.” Source: RevenueBase Database · checked Sep 19, 2026
21	Golden Windows Limited	Partial evidence	Kitchener, ON, CanadaHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “In 1961, Golden Windows began as a small Kitchener millwork plant with only a handful of employees.” Source: RevenueBase Database · checked Sep 19, 2026
22	Fenêtres Magistral	Indirect evidence	Blainville, QC, CanadaHQ checked Sep 19, 2026	201-500	80 contacts →
	Indirect evidence “Fenêtres Magistral est une entreprise québécoise ambitieuse et avant-gardiste qui désire s’imposer comme le chef de file dans le domaine de la fenestration en PVC.” Source: RevenueBase Database · checked Sep 19, 2026
23	Brookstone Windows & Doors	Indirect evidence	Windsor, ON, CanadaHQ checked Sep 19, 2026	51-200	76 contacts →
	Indirect evidence “We are a customer obsessed, modern business in a traditional industry.” Source: RevenueBase Database · checked Sep 19, 2026
24	Nordik Windows And Doors	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	201-500	70 contacts →
	Partial evidence “Nordik Windows and its partner companies have been providing the complete customer experience in window and door replacement.” Source: RevenueBase Database · checked Sep 19, 2026
25	Pollard Windows & Doors	Partial evidence	Burlington, ON, CanadaHQ checked Sep 19, 2026	201-500	69 contacts →
	Partial evidence “Pollard Windows Inc.” 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: 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 window manufacturers.
Partial evidence: Its own public description names part of window manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 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 936 window manufacturers based in Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,436 reachable decision-makers.

Free signup · no credit card

View the full list →

Window manufacturers based in Canada at a glance

As of Sep 19, 2026

32.5%Verified-email coverage

11.3Average contacts per company

11-50Median size (employees)

7.5%Largest-city concentration · Toronto

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

426

11-50

316

51-200

118

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 936 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 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.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “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 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 window manufacturers, and records with no verified work email. Companies headquartered outside Canada 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, 3,436 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.

Window manufacturers by metro

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 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 window manufacturers are there based in Canada?

RevenueBase identified 936 window manufacturers headquartered in Canada 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?

State Window Corporation, headquartered in Vaughan, tops this list with the largest team on record.

Which city has the most window manufacturers?

Toronto leads with 70 headquartered companies, followed by Vaughan (47) and Calgary (45).

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 3,436 verified decision-maker contacts tracked across these 936 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.

Ready to reach these companies? Verified emails and direct dials for all 936 window manufacturers based in Canada. Start with a free account, no credit card.

Download this list →

Related lists

Window manufacturers by geography

Browse the directory

Browse: Companies home · All Canada lists · All Window manufacturers lists · New lists

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.