Voku

What Voku does

VOKU is a family-owned Dutch installation company founded in 1978 and branded under its current name in 1985, specializing in the sale and installation of premium building-envelope products for residential customers across the Amsterdam-Utrecht corridor. Its core offering spans plastic window frames and doors from German manufacturer WERU, glass folding walls, conservatories, and terrace coverings from Solarlux, Novoferm garage doors, Verano sun protection, and complementary products from Pallazzo, Ittalum, Schmidt, Aluk, Fakro, Keralit, KEJE, InBlindz, and Polytec. The company also operates an in-house workshop manufacturing custom dakkapellen (roof dormers) at its Mijdrecht headquarters.

VOKU generates revenue through one-time project-based sales: every installation is custom-engineered, site-measured to millimeter precision, quoted individually based on dimensions, materials, glazing specification, hardware, and structural work, and installed by VOKU's own certified fitters rather than subcontractors. Pricing is not published; each quote reflects project complexity. A small repair-and-maintenance service stream supplements new installation revenue on an hourly-rate basis.

The go-to-market motion is showroom-led direct-to-consumer sales through two physical locations — a 650 m² headquarters showroom in Mijdrecht and a secondary showroom in Amstelveen acquired in 2011 — supplemented by trade show attendance, a content-rich website with project portfolios, and active social media channels. The company holds Solarlux Quality Partner and 5-sterrenspecialist certifications and reports 97-98% customer satisfaction scores from independent review collection. Second-generation owner Michiel Voortjes has led the business since 2014; no external institutional capital, funding rounds, or M&A activity beyond the 2007 van Aalst and 2011 Rijpkema acquisitions are disclosed.

Name

Voku

Legal name

VOKU

Website

https://voku.nl

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

1–10 employees

Short description

VOKU is a family-owned Dutch installer specializing in premium residential window frames, doors, conservatories, and terrace coverings from German OEMs (WERU, Solarlux, Novoferm), serving Dutch homeowners across the Amsterdam-Utrecht corridor through two showrooms and certified in-house fitting teams.

Ownership category

akta.pro rank

Product category

Residential Window and Door Installation

NAICS

Custom Architectural Woodwork and Millwork Manufacturing (337212), Drywall and Insulation Contractors (23831)

SIC

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

akta.pro primary industry

Residential Luxury / High-End Home Construction (IMAFABAJ)

Keywords

• Residential window installation
• Plastic window frames
• Conservatory construction
• Glass folding walls
• Garage door installation

Headquarters

HQ city

Mijdrecht

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain, Others

Revenue model

1. Window frames and doors sales and installation: Sale and installation of plastic, aluminum, and wooden window frames and doors from WERU brand. Products include draai-kiep windows, fixed windows, front doors, and sliding doors.
2. Solarlux folding walls and sliding systems: Premium glass folding walls (Ecoline, Highline, Woodline, Combiline), sliding systems, and minimalist cero systems. Full custom-made solutions with professional installation.
3. Conservatory and terrace covering installation: Custom-made conservatories and terrace coverings from Solarlux, Ittalum, and Verano brands. Includes full construction work from foundation to completion.
4. Sun protection systems: Awnings, screens, roller shutters, and lamella roofs from Verano brand. Often integrated with Somfy motors and smart home systems.
5. Garage doors: Novoferm garage doors including swing doors (Duoport) and sectional doors.
6. Repair and maintenance services: Post-installation repair and maintenance services for VOKU products. Charged at hourly rates with materials billed separately.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

VOKU is a Dutch family-owned retailer and installer of high-end residential building envelope products, including plastic window frames and doors (WERU), aluminum and wooden conservatories, glass folding walls and sliding systems (Solarlux), terrace coverings, lamella roofs (Verano, Ittalum, Pallazzo), and garage doors (Novoferm). The company provides end-to-end project delivery — showroom consultation, on-site measurement, custom manufacturing or partner-brand procurement, and professional installation by its own certified fitters — for private homeowners in the Amsterdam–Utrecht corridor.

Product overview

Voku is a family-owned Dutch construction company specializing in high-end building envelope solutions for residential properties. The company offers a comprehensive portfolio of products including Weru plastic window frames and doors, Solarlux folding walls, conservatories, and terrace coverings, Novoferm garage doors, Schmidt and Aluk sliding doors, Keralit facade cladding, and various sun shading systems (Verano, Keje, InBlindz). Products are available through showrooms in Mijdrecht and Amstelveen, with full-service from design through installation and after-sales support.

Differentiator

Problem solved

Functional benefit

Products and services

• WERU Plastic Window Frames High-quality PVC window frames and doors from German manufacturer WERU, available in multiple profile series (Castello, Calido, Impreo, Impreo Top) with thermal insulation, sound reduction and maintenance-free properties. For Dutch residential renovation and new-build projects.
• WERU Plastic and Aluminum Front Doors Front doors from WERU including Avida and Amenta series in plastic and aluminum, featuring security options, thermal insulation and customizable panels and glass. For residential customers.
• Novoferm Garage Doors Garage doors from Novoferm including Duoport swing doors and sectional doors, offering thermal optimization, weather resistance and customization in any RAL color. For residential properties.
• Solarlux Glass Folding Walls Glass folding walls in aluminum (Ecoline, Highline, Megaline), wood (Woodline) and wood-aluminum (Combiline) variants, featuring bionicTURTLE thermal insulation bridge, RC2/RC3 burglary resistance and up to 99% opening capability. Custom-made and professionally installed for residential customers.
• Solarlux Conservatories (Serres) Aluminum and wood-aluminum conservatory and sunroom systems including SDL Akzent Plus, SDL Akzent Vision, SDL Nobiles and SDL Avantgarde. Fully customized with thermal insulation, large glass surfaces and integration with folding walls and sliding systems. For residential customers.
• Solarlux Terrace Coverings Terrace coverings and garden rooms from Solarlux including SDL Atrium Plus, SDL Alerio and SDL Acubis systems. Available in glass, aluminum or wood-aluminum combinations with accessories for sun shading, lighting and heating. For residential customers.
• Sliding Door Systems (Solarlux, Schmidt, Aluk) Sliding door and window systems including Solarlux Ecoline S, Highline S and cero minimalist sliding systems, Schmidt QuinLine lift-slide doors and Aluk Kolos Slim 85. Feature thermal insulation up to passive house level and RC2/RC3 security certification. For residential customers.
• Verano Lamella Roofs Louvered roof systems from Verano including V870 Arezzo, V875 Belluno and V880 Rapallo models. Adjustable lamellas for sunlight and ventilation control, with water-tight closed position and optional LED lighting. For residential terrace applications.
• Verano Sun Protection Systems Sun shading products including roller shutters (RV 40), screens (standard and zip screens), sun awnings (V280 Ipanema, V225 Porto, V460 Santander, V490 Palermo) and veranda sun shading (V610 Oslo, V612 Hamar). Integrated with Somfy motors and smart home control. For residential customers.
• Ittalum Sliding Roof Terrace Coverings

Quantifiable outcome

• 98% customer satisfaction score measured by independent bureau
• +2 more outcomes

Named customers6 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature5 records

Partnerships

14 partnerships are on record, tiered core and minor.

• WERUcoreChannel Partner/ Reseller/ DistributorOfficial WERU dealer and certified WERU specialist. WERU has been the market leader in plastic window frames in Germany for over 40 years, producing more than 20 million window frames. VOKU sells and installs the complete WERU range including Castello, Calido, Impreo, and Impreo Top profile series.
• SolarluxcoreChannel Partner/ Reseller/ DistributorOfficial Solarlux Quality Partner for the Netherlands, certified for installation of Solarlux folding walls, conservatories, terrace coverings, and sliding systems. Solarlux is a German family company with over 40 years of experience producing in Melle, Germany. VOKU's fitters receive direct training from Solarlux.
• NovofermcoreChannel Partner/ Reseller/ DistributorOfficial distributor of Novoferm garage doors including Duoport swing doors and sectional doors. Novoferm offers a wide variety of garage doors that can be fully coordinated with the customer's existing paintwork in virtually any RAL color.
• PallazzominorChannel Partner/ Reseller/ DistributorSupplier of terrace coverings made of glass and polycarbonate from Pallazzo. The brand is known for reliability and quality, including slanted and straight roof constructions as well as lamella roofs.
• IttalumcoreChannel Partner/ Reseller/ DistributorOfficial Ittalum specialist for terrace coverings with sliding roofs, optionally combined with sliding and/or swing walls. Ittalum creates a wonderful outdoor space with attractive price-quality ratio.
• KEJEminorChannel Partner/ Reseller/ DistributorExclusive partnership with KEJE for insect screens and window decoration. KEJE has developed into the largest insect screen product company in the Netherlands in just 10 years, producing high-quality screens and window decorations.
• KeralitminorChannel Partner/ Reseller/ DistributorSupplier of Keralit facade cladding. Keralit provides stunning and indestructible facade cladding that never needs painting, offering permanent beautiful finishing for homes.
• VeranocoreChannel Partner/ Reseller/ DistributorDistributor of Verano sun protection products including roller shutters, screens, awnings, and veranda sun protection. Products are equipped with Somfy motors and smart home solutions for ultimate ease of use.
• SchmidtminorChannel Partner/ Reseller/ DistributorSupplier of Schmidt sliding doors (hefschuifpui) using the QuinLine system. Schmidt offers modern design, optimal comfort, and uncompromising quality with slim profiles available in virtually all colors.
• FakrominorChannel Partner/ Reseller/ DistributorSupplier of Fakro roof windows for flat and pitched roofs. Fakro offers a wide and complete range of daylight solutions, bringing natural sunlight into homes.
• InBlindzminorChannel Partner/ Reseller/ DistributorOfficial InBlindz dealer for sun protection and window decoration in double glazing. Innovative solution bringing sun protection between the glass for stylish, maintenance-free, and sustainable light and privacy regulation.
• AlukminorChannel Partner/ Reseller/ DistributorSupplier of Aluk aluminum window frames known for quality, energy efficiency, and maintenance-free properties. Provides custom solutions for residential and commercial projects.
• PolytecminorChannel Partner/ Reseller/ DistributorSupplier of Polytec high-quality door panels. Door panels are fully customizable to customer wishes and ideas, meeting all requirements for functionality, design, insulation, and safety.
• SomfycoreTechnology or IntegrationTechnology partner for motorization and control of sun protection and roller shutters. Somfy is a global market leader in motors and control technology. Products include Somfy Sunea IO and Maestria IO motors compatible with TaHoma smart home systems.

Scale indicators4 records

Recent moves9 records

Expansion highlights4 records

Broad incumbents

• Aluplast: German manufacturer of PVC window and door profile systems. Competes directly with VOKU's WERU plastic window line as an alternative German premium PVC brand for Dutch and European dealers and installers.
• Deceuninck: Belgian global manufacturer of PVC window and door systems and composite building products. Directly competes with VOKU's WERU plastic windows in the Benelux residential market through its own dealer network and installer programs.
• Schüco: German global manufacturer of premium aluminum and PVC window, door, and facade systems. Operates broadly in the same product categories VOKU sells (windows, sliding doors, folding walls) but distributes through an international dealer network rather than direct installation, competing for premium Dutch residential projects.
• Reynaers: Belgian manufacturer of aluminum window, door, and curtain wall systems with strong Benelux presence. Directly comparable to VOKU's aluminum and sliding system offerings (Solarlux cero, Aluk Kolos) and competes for the same premium residential homeowner segment in the Netherlands and Belgium.
• VELUX: Danish global manufacturer of roof windows and skylights. Operates in the same daylighting category as VOKU's Fakro offerings and competes for premium positioning in residential roof window and conservatory installations across Europe.
• Hörmann: German global manufacturer of garage doors, industrial doors, and entrance doors. Directly competes with VOKU's Novoferm garage door offering as an alternative premium brand choice for Dutch homeowners renovating properties.
• Renson: Belgian manufacturer specializing in ventilation, sun protection (screens, louvers), and outdoor living structures. Comparable to VOKU's Verano sun protection and terrace covering offerings, serving similar premium Benelux residential customers.

Others

• Solarlux: German manufacturer of premium folding walls, conservatories, and terrace coverings. VOKU is Solarlux's certified Quality Partner in the Netherlands; Solarlux's broader European dealer network represents an indirect peer footprint in adjacent markets.
• WERU: German manufacturer of plastic window frames and doors, VOKU's primary PVC partner for over 40 years. Functions as both a key supplier and indirect peer since WERU's brand positioning, product roadmap, and dealer strategy directly shape VOKU's competitive position in the Dutch market.
• Somfy: French global leader in motors and smart-home controls for window coverings, awnings, and roller shutters. Technology partner to VOKU via TaHoma and IO motor integration; relevant as a key ecosystem enabler shaping the smart-home shading experience that VOKU sells as an upsell.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutu.be/rcbeqg-7Vy8
• Facebookfacebook.com/voku.nl
• Instagraminstagram.com/voku.mijdrecht.amstelveen
• Pinterestnl.pinterest.com/VokuMijdrechtAmstelveen
• LinkedInlinkedin.com/company/voku

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Voku