What VHZ Groep does

VHZ Groep B.V. is a Dutch privately-held holding company headquartered in Zwolle that develops and manages seven wholly-owned operating brands delivering sustainable UPVC window, door, frame, and insulation glass solutions across the Netherlands. The group's subsidiaries — Kumij, Europrovyl, Transcarbo, Smits Kozijnen, Alwood Montage, Kozijn Service Nederland, and Smits Isolatieglas — collectively employ 650+ people across 11 locations and have installed more than 2,000,000 window frames. Underlying brands have 45–70 years of operating history, while VHZ Groep as a holding entity was established in 2020 to enable cross-subsidiary collaboration, shared sustainability strategy, and group-level certification.

The core offering centers on Bio-attributed PVC and UPVC window/door frame systems manufactured at production facilities in Groningen (Kumij), Leeuwarden (Europrovyl), Hoensbroek (Transcarbo), Handel (Smits Kozijnen), and Gemert (Smits Isolatieglas), supported by a circularity performance model and a closed-loop recycling partnership with Kömmerling (640,531 kg recycled in 2025). Technical differentiation rests on long-lifespan UPVC framing, fire-resistant CE-certified frames (Smits Kozijnen, 2024), and Sanco-licensed high-performance insulation glass.

VHZ operates a sales-led B2B go-to-market, acting as project partner to construction companies, renovation firms, conceptual builders, and system builders, with direct project pricing rather than public list pricing. Revenue is generated across four streams: one-time sales of manufactured window and door frames (Kumij, Europrovyl, Transcarbo, Smits Kozijnen), professional installation and assembly services (Transcarbo, Alwood Montage), recurring maintenance and hardware repair (Kozijn Service Nederland), and licensed insulation glass production under Sanco (Smits Isolatieglas). Customer expansion into healthcare construction is signaled by the 2025 Green Deal Duurzame Zorg 3.0 partnership, while group-level certifications (ISO 27001, CO2 Prestatieladder 4.0, Safety Culture Ladder Trede 3) increasingly serve as procurement gates in regulated tenders.

Name

VHZ Groep

Legal name

VHZ Groep B.V.

Website

https://vhzgroep.nl

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

501–1,000 employees

Short description

VHZ Groep is a Dutch holding company that operates seven wholly-owned subsidiaries manufacturing, installing, and maintaining sustainable UPVC window, door, frame, and insulation glass solutions for B2B construction, renovation, conceptual builders, and healthcare-sector clients across the Netherlands.

Ownership category

akta.pro rank

Product category

UPVC Window and Door Frame Manufacturing

NAICS

Metal Window and Door Manufacturing (332321), Glass and Glazing Contractors (238150)

SIC

General Bldg Contractors - Residential Bldgs (1520), Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Architectural & Building Glazing Systems (Curtain Wall/Storefront/Canopies) (IMADAHAB), Custom Window & Door Fabrication & Replacement (HSAPAJAI)

Keywords

• UPVC window frames
• Insulation glass production
• Window installation services
• Building envelope solutions
• Sustainable renovation products

Headquarters

HQ city

Zwolle

HQ country

Netherlands

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Window and door frame manufacturing and sales: Manufacturing and supply of UPVC window and door frames to construction companies, renovation firms, and project developers
2. Installation services: Installation and assembly of windows and frames by subsidiaries like Alwood Montage and Transcarbo
3. Maintenance and repair services: Repair and maintenance services for existing window systems through Kozijn Service Nederland
4. Insulation glass production: Production of high-quality insulation glass under Sanco license (Europe's largest insulation glass chain) by Smits Isolatieglas

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

VHZ Groep develops, manufactures, supplies, and installs sustainable UPVC (kunststof) window and door frame systems for the Dutch construction and renovation market through seven specialized subsidiary brands. Its offering spans the full lifecycle, including frame production, multi-colored frame manufacturing, professional installation, interior finishing, repair and maintenance, and high-performance insulation glass produced under a Sanco license.

Product overview

VHZ Groep is a group of seven unique brands delivering sustainable UPVC window solutions. The portfolio spans from raw material production to installation and maintenance services. Kumij and Europrovyl focus on manufacturing plastic window frames; Transcarbo and Smits Kozijnen handle production and sales of plastic windows and doors; Alwood Montage provides installation and finishing services; Kozijn Service Nederland offers repair and maintenance; and Smits Isolatieglas (operating under Sanco license) supplies insulation glass. The group collectively employs 650+ colleagues across 11 locations and has installed over 2 million window frames.

Differentiator

Problem solved

Functional benefit

Products and services

• Kumij UPVC window frames Project-based production and supply of plastic (UPVC) window frames for renovation and new construction projects, operated from Groningen with over 45 years of manufacturing experience under the Kumij brand.
• Europrovyl UPVC window frames Production and supply of plastic window frames as a co-maker for contractors and conceptual/system builders, operated from Friesland with over 50 years of operating history.
• Transcarbo UPVC window frames Production and installation of colorful, multi-style plastic window frames in various executions throughout the Netherlands, with over 50 years of installation experience under the Transcarbo brand.
• Smits Kozijnen plastic windows and doors Development, production, and sale of plastic windows and doors from the Gemert production facility, including CE-certified fire-resistant plastic frame and door variants introduced in 2024.
• Alwood Montage installation and finishing Installation, interior construction, and finishing services supporting window frame and door projects from project start, operated from Terborg with over 50 years of experience.
• Kozijn Service Nederland maintenance and repair Service offering for preventive maintenance of existing window systems and repair of window hardware, including hinges and locks, for installed plastic frame systems.
• Smits Isolatieglas insulation glass Production of high-quality insulation glass manufactured under license from Sanco, the largest insulation glass chain in Europe, produced at the Gemert facility and contributing to energy savings and comfort in buildings.

Quantifiable outcome

• 640,531 kg of plastic recycled in 2025, saving approximately 1,281,062 kg CO2
• +1 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered core.

• KömmerlingcoreTechnology or Integration · 1 January 2025Partnership in Kömmerling recycling program 2025 where 640,531 kg of plastic from end-of-life window frames and saw cuts was recycled, saving approximately 1,281,062 kg CO2. 100% of recycled material returns to Kömmerling K-VISION profiles, creating a fully closed loop.
• Green Deal Duurzame Zorg 3.0coreStrategic or Co-development Partner · 1 January 2025National collaboration between healthcare institutions, construction partners, governments, and suppliers aimed at accelerating sustainability in the healthcare sector. Focuses on five pillars: promoting health, increasing knowledge and awareness, reducing CO2 emissions, reducing raw material use, and promoting reuse.
• Duurzaam GebouwdcoreStrategic or Co-development PartnerKnowledge institute partnership where VHZ Groep co-organizes roundtable discussions with the complete construction chain to accelerate scaling of innovations within CO2 budgets.
• SancocoreOEM/ Whitelabel/ Licensing PartnerSmits Isolatieglas operates as a licensee of Sanco, Europe's largest insulation glass chain, producing high-quality insulation glass under this brand.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• REHAU Industries: Large polymer-based solutions group whose window and door systems division competes with VHZ in UPVC frames; broader portfolio (automotive, industrial) makes REHAU a broad incumbent rather than a window-only specialist.
• Schüco International: German broad-line window, door, and façade systems provider with both aluminum and UPVC offerings. While larger and more international, Schüco overlaps with VHZ in commercial and high-end residential window systems and installer networks.

Direct peers

• Aluplast GmbH: German family-owned producer of UPVC window and door profile systems, comparable to VHZ in product (UPVC frames), channel (fabricator networks), and end markets (residential and light commercial construction in Europe).
• VEKA AG: Major German UPVC profile manufacturer with significant European and North American presence, competing head-to-head with KÖMMERLING/Profine in the profile systems that VHZ's production subsidiaries fabricate into finished windows and doors.
• Profine GmbH (KÖMMERLING): German-headquartered UPVC profile systems manufacturer and owner of the KÖMMERLING brand — VHZ's recycling partner. Profine supplies profiles to many of the same European fabricators and is the upstream technology reference for VHZ's K-VISION-based products.
• Deceuninck: Belgian-listed manufacturer of UPVC window and door systems with a strong Benelux and European footprint, directly competing with VHZ's Kumij, Europrovyl, and Smits Kozijnen subsidiaries in profile supply and finished systems.
• Gealan Fenster-Systeme: German UPVC profile systems producer (part of the VEKA group) supplying European fabricators, with comparable product lines and end-market focus to VHZ's manufacturing subsidiaries.
• Salamander Industrie-Produkte: German UPVC profile manufacturer serving European fabricators with comparable products to VHZ's Kumij, Europrovyl, and Smits Kozijnen, often competing on the same specifier and contractor shortlists in Benelux projects.
• INOUTIC (Deceuninck subsidiary): European UPVC window and door systems brand of Deceuninck, serving fabricators and installers across Europe with a product range directly comparable to VHZ's UPVC frame offerings.

Emerging players

• Reynaers Aluminium: Belgian premium aluminum window, door, and curtain wall systems manufacturer. Although aluminum-based, Reynaers competes for the same high-spec Dutch construction and renovation projects where VHZ's UPVC systems are specified.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/vhz-groep

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries7 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 VHZ Groep