What Teha does

TEHA is a privately held Dutch manufacturer specializing in sustainable plastic window frames (kunststof kozijnen, marketed under the Image-line brand) and prefabricated facade elements for the Dutch construction and renovation market. The company produces GEALAN S9000 NL profile-based windows featuring multi-chamber technology, a three-seal system, and proprietary Acrylcolor co-extrusion finishing, and is among a small group of Dutch producers offering certified 30-minute fire-resistant plastic windows. Its product line extends to prefabricated HSB timber-frame and steel-frame facade elements, prefabricated hinged roofs, and adjustable stelkozijnen, all fabricated in-house at its factory in Haaksbergen, Overijssel.

The business model is a direct, sales-led, project-based B2B operation. TEHA sells to Dutch construction companies (aannemersbedrijven), contractors, project developers, and housing corporations (woningcorporaties), bundling technical advisory, project engineering with BIM/3D modeling, in-house installation, and transport/logistics around the hardware sale under multi-year project quotations. Pricing is not publicly disclosed and is quote-driven per project specification. Recent strategic emphasis is on industrializing production through in-house automation (notably a proprietary stone-strip attachment machine) to capitalize on Dutch market tailwinds: housing demand, energy-transition renovation requirements, and the structural shortage of masons and pointing workers that prefabricated facade elements help offset.

Name

Teha

Legal name

TEHA

Website

https://teha.nl

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

TEHA is a privately held Dutch manufacturer that designs, produces, and installs plastic window frames (Image-line/GEALAN) and prefabricated HSB and steel-frame facade elements for Dutch construction companies, contractors, and housing corporations, bundling in-house engineering, installation, and logistics.

Ownership category

akta.pro rank

Product category

Prefabricated Building Envelope Components

NAICS

Wood Window and Door Manufacturing (321911), Custom Architectural Woodwork and Millwork Manufacturing (337212)

SIC

Prefabricated Wood Bldgs & Components (2452), Millwood, Veneer, Plywood, & Structural Wood Members (2430)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Wood Trusses, I-Joists & Framing Components (IMADADAD), Window & Door Frame/Sash Replacement (HSAPAJAF)

Keywords

• Plastic window frames
• Prefabricated facade elements
• Construction manufacturing
• Timber frame elements
• Building envelope solutions

Headquarters

HQ city

Haaksbergen

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Plastic Window Sales: Sale of high-quality plastic windows (kunststof kozijnen) using GEALAN S9000 NL profiles. Products include windows, doors, and sliding doors available in standard, fire-resistant, and custom configurations. Revenue is generated through one-time product sales to construction companies and contractors.
2. Prefabricated Element Sales: Sale of prefabricated HSB and steel frame facade elements (gevelelementen), prefabricated roofs (prefab daken), and adjustable frames (stelkozijnen). These complete wall elements arrive ready for installation including windows, doors, and glazing.
3. Installation Services: Professional installation services for plastic windows and facade elements by TEHA's specialized installation team (montage). Ensures quality and durability through in-house installation expertise.
4. Consulting and Advisory Services: Technical advisory services provided during project development, engineering, and production phases. Specialists contribute knowledge and experience to optimize project outcomes.
5. Project Engineering Services: Technical project engineering including 3D modeling (BIMM), design phase support, and construction optimization to minimize failure costs and prevent technical problems during execution.
6. Transport and Logistics: Complete transport and logistics services ensuring on-time delivery of products. TEHA assumes full responsibility for logistics coordination and just-in-time delivery.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

TEHA manufactures and supplies sustainable plastic window frames (kunststof kozijnen, marketed as the Image-line using GEALAN S9000 NL profiles) and prefabricated timber (HSB) and steel frame facade elements (gevelelementen), along with prefabricated roofs, adjustable frames, and fire-resistant windows. The company delivers complete turnkey solutions covering project engineering, factory production, transport, on-site installation, and after-sales maintenance, primarily for Dutch construction companies and housing corporations.

Product overview

TEHA is an innovative supplier and producer of sustainable quality window frames and prefabricated steel frame and timber frame facade elements for the Dutch construction industry. The product portfolio centers on plastic windows (marketed under the Image-line brand using GEALAN profiles) and prefabricated facade elements (both HSB timber frame and steel frame variants), complemented by related products including fire-resistant windows, adjustable frames, and prefabricated roofs. Services include in-house installation, consulting, project engineering with BIM capabilities, R&D, and transport logistics. All products are manufactured in TEHA's own factory under controlled conditions, enabling just-in-time delivery and quality control. The company differentiates through industrial automation, sustainable building practices, and nature-inclusive construction solutions.

Differentiator

Problem solved

Functional benefit

Brands

• Image-line: The product line name under which TEHA offers its plastic window frame systems. Includes windows, doors, and sliding doors under the GEALAN S9000 NL system.

Products and services

• Kunststof kozijnen (Image-line) High-quality plastic window frames using GEALAN profiles marketed under the Image-line brand, available as windows, doors, and sliding doors in various color and finish options including Acrylcolor co-extrusion. Designed for Dutch new build and renovation projects by construction companies and housing corporations.
• Brandwerende kunststof kozijnen Fire-resistant plastic window systems with a tested 30-minute fire rating, available for fixed glass, windows, doors, and combinations. One of the few Dutch producers offering tested fire-resistant plastic window configurations.
• Prefab HSB & staalframe gevelelementen Prefabricated timber (HSB) and steel frame facade elements produced under controlled factory conditions and delivered to site as complete units with windows, doors, and/or sliding doors already installed. Steel skeleton is used for facade elements to ensure dimensional stability and reduced weight; addresses the scarcity of masons and pointing workers via stone-strip finish options.
• Prefab daken Prefabricated steel frame roof elements, typically executed as hinged roofs with smart lifting devices. Designed for fast construction processes and to minimize failure costs on site.
• Stelkozijnen Plastic windows supplied in wooden adjustable frames, delivered complete with lintels, EPDM flashing, PVC corner profiles, and lifting provisions. Used to enable early-stage construction delivery.
• Montage (Installation service) Professional on-site installation service for plastic window frames and prefabricated facade-sealing elements in new construction and renovation projects, provided by TEHA's own specialized installation teams to ensure quality and durability.
• Advies (Consulting service) Technical advisory and consulting service that combines TEHA's specialist knowledge with client know-how to add value during project development, project engineering, production, and post-delivery phases.
• Projectengineering Technical project engineering service spanning the design phase through execution, including 3D modeling and BIM collaboration, aimed at minimizing failure costs and preventing technical problems during construction.
• Transport & Logistiek Complete transport and logistics service in which TEHA takes full responsibility for delivering products on time to construction sites, including just-in-time delivery coordination.
• Onderhoud (Maintenance service) After-sales maintenance service for plastic windows and glass, including maintenance instructions, instruction videos, and damage assessment, supported by a service department reachable via phone and email.

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core, major and minor.

• GEALANcoreTechnology or IntegrationGEALAN is the primary profile supplier for TEHA's plastic windows. TEHA uses GEALAN S9000 NL profile systems, including the Acrylcolor co-extrusion technology for colored profiles. GEALAN has over 30 years of experience in colored acrylic profiles. The partnership provides TEHA with premium window profile technology featuring multi-chamber systems, excellent insulation values, and various color and finish options.
• BOT BouwmajorChannel Partner/ Reseller/ DistributorBOT Bouw is a construction company that has partnered with TEHA on multiple projects. BOT Bouw has used TEHA prefabricated facade elements in projects including 64 new residential homes in Alkmaar.
• Aannemersbedrijf KuipersmajorChannel Partner/ Reseller/ DistributorAannemersbedrijf Kuipers is a construction contractor that has worked with TEHA on residential projects including new construction of a single home in Gieten featuring TEHA plastic windows.
• Boele & van EesterenmajorChannel Partner/ Reseller/ DistributorBoele & van Eesteren is a construction company that has used TEHA products for the Parc Drieën-Huysen project in Vlaardingen, Phase 5, featuring 13 new residential homes with TEHA plastic windows.
• RenolutionmajorChannel Partner/ Reseller/ DistributorRenolution is a construction/renovation company that has partnered with TEHA for the renovation of homes in Vlijmen using TEHA prefabricated facade elements.
• SKK KozijnwachtminorChannel Partner/ Reseller/ DistributorSKK Kozijnwacht is a recommended service partner for customers needing repairs or adjustment work on hardware (hanging and closing hardware) outside the warranty period. They inform customers about applicable rates for post-warranty service.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

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 Teha