GAYKO

What GAYKO does

GAYKO Fenster-Türenwerk GmbH is a German manufacturer of plastic (PVC) windows and doors headquartered in Wilnsdorf, Germany. The company was founded around 1984 by Klaus Gayko and operates with approximately 220 employees as a privately held GmbH. Its core product range encompasses PVC window systems, aluminum-clad and aluminum front doors, roller shutters, insect protection systems, and the A-Drive smart-home drive system for windows and doors. Notable technical features include the patented GAYKOSafeGA security technology and RC2/RC3-certified security levels, supporting a positioning focused on burglary-resistant, energy-efficient building envelopes.

The company sells exclusively through a network of certified specialist trade partners (Fachbetriebe) across Germany, Switzerland, the Benelux region, and parts of the United States, rather than direct-to-consumer. Its go-to-market model relies on partner certification, joint marketing, and after-sales support, with revenue generated through project-based and renovation-driven sales of fenestration products. End customers span private homeowners undertaking modernization, property management firms, housing developers, and architects specifying for new-build projects. The company actively promotes its products in conjunction with public subsidy programs such as BAFA and KfW funding for energy-efficient building retrofits.

GAYKO is founder-owned, with Klaus Gayko serving as managing director, and is currently navigating a generational transition as the founder approaches his seventies. The business model is asset-heavy in manufacturing and channel-development rather than software- or platform-driven, with international growth executed through local distribution partnerships rather than wholly owned subsidiaries.

Name

GAYKO

Legal name

GAYKO Fenster-Türenwerk GmbH

Website

https://gayko.de

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

51–100 employees

Short description

GAYKO Fenster-Türenwerk GmbH is a German manufacturer of PVC windows, aluminum front doors, and smart-home drive systems, selling exclusively through certified specialist trade partners across Germany, Switzerland, the Benelux region, and parts of the United States.

Ownership category

akta.pro rank

Product category

Windows and Doors Manufacturing

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

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

akta.pro primary industry

Motorized Shades, Blinds & Curtain Automation (HSAHADAD)

Keywords

• Plastic window manufacturing
• Front door systems
• Security window technology
• PVC window profiles
• Lift-and-slide doors

Headquarters

HQ city

Wilnsdorf

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Windows Sales: GAYKO manufactures and sells high-performance windows (plastic, aluminum, wood-aluminum) through a network of certified specialist trade partners. Products are built for generations with focus on security, thermal protection, soundproofing, and smart home integration. Revenue is generated from product sales to trade partners who then sell to end customers.
2. Doors Sales: Sale of entrance doors (Haustüren) in aluminum and plastic materials through the same trade partner network. Product lines include Exclusiv, Trend, modern art, and Classic series, with options for fingerprint and ekey dLine smart access.
3. Sliding Doors Sales: Sale of lift-sliding doors (Hebeschiebetüren) including GAYKOLIFE HSA, GAYKOLIFE PASSIV HSA, and GAYKO Aluline 901 HSA models for residential and passive house applications.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

GAYKO manufactures high-performance PVC, PVC-aluminum, wood-aluminum, and aluminum windows and doors from its Wilnsdorf production facility. Products integrate patented security (GAYKOSafeGA®), thermal insulation, acoustic protection, and design variety (83 colors and wood-grain decors) into unified systems, including lift-and-slide doors and the GAYKO A-Drive smart home automation option. All sales are conducted exclusively through a certified network of specialist trade partners (Fachbetriebe) who deliver consultation, sale, and professional installation across Germany, Switzerland, BeNeLux, and parts of the USA.

Product overview

GAYKO is a German manufacturer of windows (Fenster) and doors (Haustüren, Schiebetüren) operating since the 1980s. The product portfolio centers on three main categories: (1) PVC, PVC-aluminum, and aluminum windows available in installation depths of 76mm and 82mm, featuring proprietary safety technology (GAYKOSafeGA series with RC2/RC3 certification), design systems (GAYKO EDS corner design, GAYKO FUSION aluminum shells, GAYKOWOODLINE wood-aluminum), and comfort packages (Komfort 100-900PLUS); (2) Front doors in aluminum and PVC with multiple design lines (Exklusiv, Trend, modern art, Classic) and optional fingerprint access via ekey dLine; (3) Lift-and-slide doors (HSA series) in PVC, passive house, and aluminum variants. The GAYKO A-Drive Technology enables smart home automation for their products. The company emphasizes patented security features, thermal insulation, acoustic protection, and design variety including 83 colors and wood-grain decors, all supported by a network of qualified specialist trade partners.

Differentiator

Problem solved

Functional benefit

Brands

• GAYKO SafeGA®: Patented security technology featuring mushroom-shaped locking bolts (Pilzzapfen) that lock in opposite directions, providing RC2 or RC3 security certification for windows and doors.
• GAYKO FUSION
• GAYKO EDS
• GAYKO WOODLINE
• GAYKO HYBRID
• GAYKO A-Drive Technology
• GAYKO Aluline
• GAYKO Life

Products and services

• GAYKO Fenster - Bautiefe 82 (PVC Windows, 82mm)

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Henselstone (USA)coreChannel Partner/ Reseller/ Distributor · 7 November 2025Long-term international partnership with Henselstone (USA) for the distribution of GAYKO products in the American market. In November 2025, Henselstone representatives visited the GAYKO factory in Wilnsdorf along with three high-profile architect clients. The collaboration focuses on the high-end new construction market in the USA, with exciting projects expected in 2026. The partnership is characterized by trust, partnership, and almost familial exchange between generations.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• aluplast GmbH: aluplast is a German-based manufacturer of PVC window and door profile systems with strong European distribution. It competes directly with GAYKO in the premium PVC window segment with comparable technology, energy efficiency, and design differentiation.
• REHAU: REHAU is a German polymer-based solutions company with a substantial window and door systems business (REHAU Fenstertechnik), producing PVC and PVC-aluminum profiles. It is directly comparable to GAYKO as a competing PVC window systems manufacturer serving European residential construction and renovation markets.
• profine GmbH (KBE, KÖMMERLING, TROCAL): profine produces PVC profiles for windows and doors under the KBE, KÖMMERLING, and TROCAL brands, serving European fabricators and installers. It is a direct peer of GAYKO in the PVC window profile and finished systems market.
• VEKA AG: VEKA is one of the world's largest manufacturers of PVC profiles for windows and doors, supplying fabricators across Europe. It is directly comparable to GAYKO as a competing PVC window systems supplier with overlapping end-markets in residential and renovation.
• Schüco International: Schüco is one of Europe's leading building envelope specialists, offering aluminum, PVC-U, and steel window and door systems for residential and commercial projects. It directly competes with GAYKO across window and door categories with a comparable premium, design-driven positioning.
• Salamander Industrie-Produkte GmbH: Salamander is a German manufacturer of PVC window and door profiles under the Salamander and Brügmann brands. It is a direct peer competing with GAYKO in the European PVC window systems market with overlapping fabricator and installer customers.
• Internorm International: Internorm is an Austrian window manufacturer offering PVC, wood-aluminum, and aluminum windows and lift-slide doors across Europe. It is directly comparable to GAYKO as a premium European window and door specialist with similar energy efficiency and design focus.
• Gealan Fenster-Systeme GmbH: Gealan is a European PVC profile manufacturer for windows and doors, part of the VEKA group. It is comparable to GAYKO as a competing PVC systems provider with similar product lines and partner-fabricator channel structure.
• Heroal: Heroal is a German manufacturer of aluminum window, door, and roller shutter systems for residential and commercial applications. It is directly comparable to GAYKO's Aluline aluminum product line and broader window/door portfolio, with overlapping premium positioning and European distribution.

Broad incumbents

• Hörmann Group: Hörmann is one of Europe's largest manufacturers of building elements, including garage doors, industrial doors, and entrance doors. It is a broad incumbent with overlapping door product categories (entrance doors) and a comparable European residential/commercial customer base, though it does not specialize in PVC windows.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC5Rb4skNIiS5ZVaqFDfSnhg
• Facebookfacebook.com/gaykowelt
• Instagraminstagram.com/gayko.fenster.tueren
• Xx.com/gaykogmbh

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about GAYKO