What Raamwerk does

Transcarbo is a Netherlands-based B2B specialist in sustainable PVC window frames, doors, and lift-slide doors, founded in 1968 and operating as a subsidiary of VHZ Groep, the market leader in the Dutch window frame industry. The company manufactures four core PVC profile systems — Base, Haax, Slim, and Fine — alongside doors, lift-slide doors, and a suite of modular options including fire-resistant frames, soundproof solutions, integrated glass packages, GEALAN-acrylcolor® acrylic top-coating in 90+ colors, and hardware. Technical differentiators include a triple-seal gasket design achieving the lowest U-value (0.73) in the plastic window frame industry, 100% recyclable PVC with a stated 500-year material lifespan, frames tested to 600 Pascal wind- and water-tightness for high-rise use, and the cascoready prefabrication system engineered to integrate with concrete and timber-frame construction methods. Production is KOMO-certified and located at the Hoensbroek headquarters, with the company generating 50% of its own energy.

The company sells exclusively through B2B channels — direct enterprise sales to contractors (aannemers), housing corporations (woningcorporaties), and associations of owners (VvE's), supplemented by technical consultation to architects and a curated dealer network for private residential projects — covering the full lifecycle from sales and design through production to installation. Revenue is generated through one-time product sales combined with professional installation and montage services, with project-specific pricing that is not publicly disclosed. Named project references span institutional healthcare (Haga Hospital, Den Haag), large residential new-build and renovation (De Eenhoorn Amsterdam, WFC Ede, 153-home passive house development in Kerkrade, Abdissenbosch Landgraaf), and high-rise commercial (Forty Five Zwijndrecht). Marketing is primarily project-portfolio driven via the company website, LinkedIn, Facebook, and YouTube, with referral leverage from the broader VHZ Groep brand.

Name

Raamwerk

Legal name

Transcarbo

Website

https://raamwerk.com

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

11–50 employees

Short description

Transcarbo is a Netherlands-based B2B manufacturer of sustainable PVC window frames, doors, and prefab solutions, serving contractors, housing corporations, and VvE's across Dutch construction and renovation markets as part of VHZ Groep.

Ownership category

akta.pro rank

Headquarters

HQ city

Hoensbroek

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Plastic Window Frame Sales: Sale of plastic (PVC) window frames, doors, and lift-slide doors to B2B customers including contractors, housing corporations, and VvE's. Products are produced and installed by Transcarbo.
2. Installation and Montage Services: Transcarbo both delivers and installs (monteert) window frames as a full-service offering, covering the entire process from sales and design to production and placement.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Transcarbo manufactures, supplies, and installs sustainable PVC window frames, doors, and lift-slide doors for the Dutch B2B construction market. The portfolio is built around four core profile lines (Base, Haax, Slim, and Fine) and includes full-service delivery from sales and design through production and installation. The company also offers cascoready prefabricated window solutions optimized for concrete and timber-frame construction methods, alongside options for fire resistance, soundproofing, glass integration, and GEALAN-acrylcolor surface coating.

Product overview

Transcarbo is a B2B specialist in sustainable PVC window frames and doors for the Dutch commercial construction market, operating as part of VHZ Groep. The product portfolio centers on four core window profile lines (Base, Haax, Slim, and Fine) complemented by doors, lift-slide doors, and various options including fire-resistant, soundproof, and specialized glass solutions. The offering includes GEALAN-acrylcolor® premium surface coating (90+ colors, scratch-resistant), Casco Ready prefabrication services for concrete and timber frame construction, and sustainability initiatives like Low Carbon Glass and GEALAN BALANCE. The company emphasizes 100% recyclable PVC with 3-seal systems achieving U-values as low as 0.73, serving contractors, housing corporations, and owner associations across newbuild, renovation, and high-rise projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Base Kozijn (PVC Window Frame) Core PVC window frame profile with straight corner connections, suitable for various building types including high-rise construction up to 600 Pascal wind- and water-tightness. Sells as a standalone profile line in the Transcarbo product portfolio.
• Haax Kozijn (PVC Window Frame) Core PVC window frame profile offering high insulation values and a wide range of color options including wood grain foil finishes. Sells as a standalone profile line in the Transcarbo product portfolio.
• Slim Kozijn (PVC Window Frame) Core PVC window frame profile designed with slim profiles for modern architectural aesthetics while maintaining high insulation performance. Sells as a standalone profile line in the Transcarbo product portfolio.
• Fine Kozijn (PVC Window Frame) Premium PVC window frame profile with refined aesthetics and superior finish quality. Sells as a standalone profile line in the Transcarbo product portfolio.
• Deuren (PVC Doors) PVC doors available in various styles and configurations, compatible with hardware options for residential and commercial applications. Sells as a standalone product category.
• Hefschuifdeuren (Lift-Slide Doors) Lift-slide door systems providing large glazed openings with high insulation values and smooth operation. Sells as a standalone product category.
• Cascoready Prefab Window Solutions Prefabricated window solutions optimized to integrate with specific construction methods (concrete and timber frame construction), enabling fast, error-minimized installation with automated production based on detail drawings. Delivered as a full-service offering for new-build and renovation projects.

Quantifiable outcome

• U-value of 0.73 — the lowest in the plastic window frame industry
• +4 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• VHZ GroepcoreStrategic or Co-development PartnerTranscarbo is a subsidiary of VHZ Groep, described as the market leader (marktleider) in the window frame industry in the Netherlands. Within the VHZ Group, Transcarbo benefits from investments in sustainable technologies, optimized processes, and shared market reach. The group includes other specialist companies in the window frame value chain.
• GEALANcoreTechnology or IntegrationTranscarbo uses GEALAN profile systems for its plastic window frames, including the GEALAN-acrylcolor technology for colorfast acrylic top layers and the GEALAN S9000 Base profile used in multiple projects. GEALAN is a leading manufacturer of PVC profile systems for windows and doors.
• KOMOcoreStrategic or Co-development PartnerTranscarbo produces window frames under the KOMO quality certificate, ensuring compliance with Dutch building standards and regulations. KOMO certification is a recognized quality mark in the Dutch construction industry.
• Selected DealersminorChannel Partner/ Reseller/ DistributorTranscarbo partners with a network of selected dealers for private residential projects. Dealers purchase Transcarbo's window frames and sell/install them to private consumers. Transcarbo does not sell directly to end consumers.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Profine (KBE / Kömmerling): German PVC profile group owning KBE and Kömmerling brands, producing high-insulation window systems. Comparable to Transcarbo in technical positioning and B2B contractor channel.
• Inoutic (Deceuninck): PVC window and door profile brand within the Deceuninck group, offering premium insulation and surface-color systems. Directly comparable in product positioning to Transcarbo's Base/Haax/Slim/Fine lines.
• Salamander Industrie-Produkte: European PVC window and door profile manufacturer offering branded frame systems with premium color and surface finishes. Comparable in product range and target customer segments.
• Aluplast: Mid-sized European PVC window profile manufacturer with multi-chamber and high-insulation systems. Closely comparable to Transcarbo in product positioning around energy efficiency and color configurability.
• GEALAN: Leading European manufacturer of PVC window and door profile systems, including the GEALAN-acrylcolor surface technology that Transcarbo uses. As a profile-system supplier and competing systems house, GEALAN is the closest technical peer.
• Deceuninck: Belgian-headquartered PVC and composite window/door profile manufacturer with strong presence in Benelux. Directly competes with Transcarbo in Dutch and Belgian B2B construction markets.
• Veka: One of the largest global PVC window and door profile manufacturers, with comparable product lines (frames, lift-slide doors, surface finishes). Direct competition for European PVC frame tenders and a benchmark for scale economics.

Broad incumbents

• Reynaers Aluminium: Belgian manufacturer of premium aluminum and hybrid window, door, and curtain-wall systems. A direct substitute competitor in Dutch high-rise and premium residential projects.
• Schüco: Large German building-envelope specialist offering aluminum, PVC, and hybrid window/door systems at scale. Competes with Transcarbo on commercial projects while serving a broader architectural portfolio.
• Hörmann: European leader in doors, frames, and building-opening products across residential and industrial segments. A broader incumbent whose window/door ranges compete with Transcarbo in B2B construction projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC8eGT1KX5nmR1Aseo7smOCw
• Facebookfacebook.com/transcarbo
• LinkedInlinkedin.com/company/raamwerk

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Raamwerk