North Star Windows and Doors

What North Star Windows and Doors does

North Star Windows and Doors is a Canadian manufacturer of vinyl windows, sliding patio doors, and entry doors, headquartered in St. Thomas, Ontario, and operating continuously since 1985 under the legal entity North Star Manufacturing (London) Ltd. The company manufactures in its own AAMA-certified extrusion facility and produces three core window series — Series 1000 (3 1/4 inch frame), Series 4000/5000 (4 1/2 to 5 1/4 inch frames), and a Series 4000/5000 Hybrid with aluminum exterior cladding — across casement, single-hung, double-hung, slider, awning, bow, bay, picture, and custom configurations. Adjacent product lines include the ComfortStar sliding patio door and the Sentinel steel and fiberglass entry door system, the latter featuring composite frames independently tested at the University of Waterloo for Category 4 hurricane wind resistance.

The company's technical differentiation rests on three proprietary platforms: ULTRASTAR, an industry-first co-extrusion of virgin vinyl PVC with 55% fiberglass content that eliminates metal reinforcement; Fusion Colour Wrap, a multilayer polyurethane reactive hot-melt coating for permanent exterior color; and licensed Super Spacer warm-edge foam silicone spacer technology claimed to boost R-values by 30%. All products are CSA-A440 and ENERGY STAR certified, with the ComfortStar patio door carrying ENERGY STAR Most Efficient designation, and the catalog is aligned with the Canada Greener Homes Grant incentive program. Component-level partnerships supply climate-segmented glazing from Pilkington (Activ self-cleaning, Energy Advantage), Cardinal (LoE 366), and Guardian Glass (ClimaGuard 80/71).

North Star operates a pure channel-partner go-to-market, selling exclusively through over 300 authorized and Diamond Dealers across North America, with no direct-to-consumer e-commerce and no publicly disclosed pricing. End customers are residential homeowners, builders, and contractors undertaking replacement, renovation, or new construction, served through a tiered dealer program that requires WSIB coverage, liability insurance, and demonstrated installation expertise. Revenue is generated through one-time hardware sales backed by a transferable limited lifetime warranty, and the company is privately held with no external investment, parent company, or public-ownership signals in the available data.

Name

North Star Windows and Doors

Legal name

North Star Manufacturing (London) Ltd.

Website

https://northstarwindows.com

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

1–10 employees

Short description

North Star Windows and Doors is a Canadian manufacturer founded in 1985 that produces energy-efficient vinyl windows, sliding patio doors, and entry doors, selling exclusively through over 300 authorized dealers across North America from its St. Thomas, Ontario headquarters.

Ownership category

akta.pro rank

Product category

Vinyl Window and Patio Door Manufacturing

NAICS

Metal Window and Door Manufacturing (332321)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Windows (IMADAIAC)

Keywords

• Vinyl window manufacturing
• Patio door manufacturing
• Energy-efficient windows
• Entry door systems
• Residential fenestration products

Headquarters

HQ city

Saint Thomas

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Vinyl Windows and Doors (Series 1000, 4000/5000, Hybrid): North Star manufactures and sells vinyl windows and doors through a dealer network. Products include casement, single-hung, double-hung, slider, awning, bow, bay, picture, and custom windows; ComfortStar sliding patio doors; and Sentinel steel and fiberglass entry doors. Sales are one-time product transactions with a transferable limited lifetime warranty.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

North Star Windows and Doors manufactures vinyl windows and sliding patio doors sold through an independent dealer network across North America. Its catalog spans the Series 1000, Series 4000/5000, and Series 4000/5000 Hybrid window lines in multiple operating styles (casement, single-hung, double-hung, slider, awning, bow, bay, picture, custom shapes), the ComfortStar sliding patio door line, and the Sentinel entry door line for residential new construction and renovation projects.

Product overview

North Star Windows and Doors is a manufacturer of vinyl windows and doors headquartered in St. Thomas, Ontario, Canada, operating since 1985. The company offers three main window series: Series 1000 (3 1/4 inch traditional vinyl frame), Series 4000/5000 (4 1/2 to 5 1/4 inch deep frames), and Series 4000/5000 Hybrid (vinyl interior with aluminum exterior). Window types include casement, single-hung, double-hung, slider, awning, bow, bay, picture, and custom shapes. The company also produces ComfortStar Sliding Patio Doors and Sentinel Entry Doors (steel and fiberglass). Key proprietary technologies include ULTRASTAR fiberglass co-extruded reinforcement, Fusion Colour Wrap exterior coating, and Super Spacer warm-edge technology. North Star holds CSA-A440 certification and ENERGY STAR certification for all product lines.

Differentiator

Problem solved

Functional benefit

Brands

• Sentinel: Entry door brand featuring steel and fiberglass doors with composite frames tested to withstand hurricane-force winds up to 246 km/h (Category 4 hurricane).
• ComfortStar
• ULTRASTAR
• Fusion Colour Wrap

Quantifiable outcome

• Window R-values boosted by 30% with Super Spacer technology
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Four partnerships are on record, tiered core.

• University of Waterloo (Composites Research Group)coreStrategic or Co-development PartnerNorth Star collaborated with the University of Waterloo's composites research group to conduct independent laboratory testing of the Sentinel entry door system. Testing confirmed the composite frame outperformed wood materials in water resistance, structural integrity, and dimensional stability. Sentinel achieved industry-leading ratings for air and water penetration, demonstrating its ability to withstand elements without warping, bowing, or twisting.
• PilkingtoncoreTechnology or IntegrationNorth Star offers Pilkington Activ self-cleaning glass as an option across its window and patio door products. The glass features a permanent photocatalytic and hydrophilic coating that breaks down organic dirt when activated by sunlight and washes it away with rain. North Star also offers Pilkington Energy Advantage low-E glass for northern climates.
• CardinalcoreTechnology or IntegrationNorth Star offers LoE 366 low-emissivity glass from Cardinal, recommended for southern climates where cooling costs outweigh heating costs. The glass has a very high reflection rate of radiant outside heat to prevent summer heat gain while retaining radiant heat in winter.
• Guardian GlasscoreTechnology or IntegrationNorth Star offers ClimaGuard 80/71 coated residential glass from Guardian Glass, designed for cold northern climates. The glass is designed to maximize solar heat gain and retain indoor heat while providing desired visible light transmission and insulating power.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Simonton Windows: Simonton Windows is a vinyl window and patio door manufacturer serving the replacement and new-construction markets through dealers and big-box retailers. Its product positioning around energy efficiency and dealer distribution is closely aligned with North Star's go-to-market.
• Vinylmax Windows: Vinylmax Windows is a U.S. vinyl window and patio door manufacturer selling through dealers in the Midwest and Mid-Atlantic. It competes with North Star in vinyl window and sliding patio door categories through a similar dealer-led, energy-efficiency-focused model.
• Sunrise Windows & Doors: Sunrise Windows & Doors is a vinyl window and door manufacturer focused on the U.S. Midwest and East Coast, selling through a dealer network. Its specialty dealer distribution and vinyl product focus make it a strong comparable to North Star in channel and product structure.
• ProVia Door: ProVia is a U.S. manufacturer of steel and fiberglass entry doors, patio doors, and windows sold through dealers and distributors. Its Sentinel-comparable entry door offering and dealer-led distribution make it a direct peer in the entry door category North Star serves.
• MI Windows and Doors: MI Windows and Doors is a large U.S.-based vinyl window and patio door manufacturer selling through dealer and builder channels. It is one of the closest direct peers to North Star in terms of vinyl-only product focus, multi-series window lineup, and dealer-led distribution model.

Broad incumbents

• Cornerstone Building Brands (Ply Gem): Cornerstone Building Brands, parent of Ply Gem Windows, is a major North American manufacturer of vinyl and aluminum windows, patio doors, and entry systems. It directly overlaps with North Star's vinyl window and patio door offering, particularly in U.S. builder and dealer channels.
• Andersen Windows & Doors: Andersen is a leading North American window and door manufacturer with a broad portfolio of wood, composite, and Fibrex-based products. It competes with North Star in residential replacement and new-construction windows but at significantly larger scale and with a wider product and price-point range.
• JELD-WEN: JELD-WEN is one of the world's largest manufacturers of windows, doors, and related building products. It is broadly comparable to North Star as a multi-category window and door manufacturer, though JELD-WEN operates at a much larger scale with a global footprint and broader material coverage.
• Therma-Tru Doors: Therma-Tru is a leading North American manufacturer of fiberglass and steel entry doors sold through dealers, builders, and big-box retailers. It competes with North Star's Sentinel entry door line in fiberglass entry systems, particularly in U.S. replacement and new-construction channels.
• Weather Shield Windows & Doors: Weather Shield is a long-established U.S. manufacturer of premium wood, vinyl, and composite windows and doors. It overlaps with North Star in the vinyl and energy-efficient replacement segment but offers a broader premium materials portfolio and a larger national builder footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/NorthStarWindowsDoors
• LinkedInlinkedin.com/company/north-star-windows-&-doors
• Instagraminstagram.com/northstarwindows

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about North Star Windows and Doors