Holonite

What Holonite does

Holonite B.V., founded in 1969 and headquartered in Tholen, Netherlands, is a privately held B2B manufacturer of cast composite stone (composietsteen) facade and finishing elements for the construction sector. The product portfolio is organized in two segments. The Gevel- & Afbouw segment covers window sills (raamdorpels), interior window sills (vensterbanken), exterior door thresholds (buitendeurdorpels), band courses (spekbanden), wall covers (muurafdekkers), lintel cladding (lateibekleding), jamb cladding (dagkantbekleding), facade plinths (gevelplinten), stair treads (traptreden), water spouts (spuwers), pier caps (penantafdekkingen), skirting boards (plinten), and interior thresholds. The Kozijnindustrie segment delivers low-relief threshold systems marketed under the registered sub-brands Premax (wood), Kumax (plastic), and Trimax (aluminum, lift-and-slide, hybrid), shipped with sealing cuffs and mounting hardware for direct integration into window frames. Underlying technology is cast molding of a proprietary composite stone recipe that is waterproof, weather-resistant, easy to saw/drill/sand, and offered in custom colors, textures, and sizes.

The firm runs a build-to-order production model at a single Tholen manufacturing site, producing everything to specification rather than stocking finished units. Revenue is generated through unit-priced hardware sales quoted in euros, ex-VAT, on a Franco basis within the Netherlands. Go-to-market blends direct enterprise sales via account managers to architects, contractors, housing corporations, and window frame manufacturers with broad-line distribution through Dutch professional building materials merchants (BMN, Bouwcenter, BPG, Sakol, Stiho) and Verhelst in Belgium; standard products are stocked by merchants while custom orders flow directly with order confirmations within two working days. Geographic reach spans the Netherlands, Belgium, England, and Germany, supported by multilingual websites (Dutch, English, German). Holonite maintains ISO-9001 certification since 1996 and operates a CAD & Bestekservice digital tool that auto-generates STABU specifications and CAD drawings for architects. A Circular Product Line (recycled-material thresholds) was launched in March 2026 and a Trimax Parallel slide-door threshold was launched in June 2026. Primary customer segments are architects, construction companies (aannemerij), and window frame manufacturers (kozijnindustrie), with housing corporations and private consumers reached indirectly through merchants.

Name

Holonite

Legal name

Holonite B.V.

Website

https://holonite.nl

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

101–250 employees

Short description

Holonite is a Dutch manufacturer of cast composite stone facade and finishing elements (window sills, thresholds, band courses, cladding) and low-relief threshold systems for the window frame industry, serving architects, contractors, housing corporations, and window frame manufacturers in the Benelux and Western Europe.

Ownership category

akta.pro rank

Product category

Composite Stone Building Materials

NAICS

Cut Stone and Stone Product Manufacturing (327991), Nonmetallic Mineral Product Manufacturing (327)

SIC

Cut Stone & Stone Products (3281), Concrete, Gypsum & Plaster Products (3270), Concrete Products, Except Block & Brick (3272)

akta.pro primary industry

Manufactured/Engineered Stone & Agglomerates (Quartz, Terrazzo, Sintered Stone) (IMAKAHAG)

akta.pro secondary industry

Masonry Prefabricated Elements (Panels, Lintels, Sills) (IMADABAM)

Keywords

• Composite stone products
• Facade building elements
• Window sill manufacturing
• Door threshold systems
• Cast stone finishes

Headquarters

HQ city

Tholen

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Composite Stone Building Products: Holonite generates revenue through the manufacture and sale of composite stone facade and finishing elements including thresholds, window sills, band courses, traptreads, spouts, and custom-made products. Products are sold to B2B customers (architects, contractors, housing corporations, window frame manufacturers) and indirectly to consumers via distribution partners. Pricing is based on product type and customization, with Franco deliveries within the Netherlands.

Pricing tiers

Go-to-market motion2 records

Distribution channels8 records

Marketing channels5 records

Core offering

Holonite manufactures cast composite stone (composietsteen) facade and finishing elements — window sills, door thresholds, band courses, wall covers, lintel and jamb cladding, facade plinths, stair treads, gargoyles, pier caps, skirtings — together with proprietary Premax® and Trimax® low-relief threshold systems for the wooden, plastic and aluminum window-frame industry. Products are sold B2B to architects, construction companies, housing corporations and window-frame manufacturers, and indirectly to consumers via professional building-materials merchants across the Netherlands and Belgium. The offering is complemented by a CAD & specification service for specifiers and custom (maatwerk) production for project-specific requirements.

Product overview

Holonite is a specialist in composietsteen (cast composite stone) facade and finishing elements, operating since 1969. The product portfolio consists of two main segments: (1) Gevel- & Afbouwelementen (Facade & Finishing Elements) including window sills (raamdorpels, vensterbanken), door thresholds (buitendeurdorpels, binnendeurdorpels), band courses (spekbanden), wall covers (muurafdekkers), lintel cladding (lateibekleding), jamb cladding (dagkantbekleding), facade plinths (gevelplinten), stair treads (traptreden), gargoyles/spouts (spuwers), pier caps (penantafdekkingen), and skirting boards (plinten); and (2) Dorpelsystemen Kozijnindustrie (Threshold Systems for Window Frame Industry) featuring Premax® and Trimax low-relief thresholds for wooden, plastic, and aluminum frames. Supporting services include CAD & Bestekservice for architectural specifications and custom manufacturing for project-specific requirements. All products are produced in the Netherlands with extensive color and texture options.

Differentiator

Problem solved

Functional benefit

Brands

• Premax: Low-relief thresholds for wooden window frames
• Trimax
• Kumax

Products and services

• Raamdorpels (Window Sills) Exterior composite stone window sills in multiple profiles (types A t/m K, KK, Y, X, S/D/M/P, W/Z, RR) for various architectural styles and masonry applications. Sold to construction companies, contractors and architects for residential and commercial projects.
• Vensterbanken (Interior Window Sills) Interior cast composite stone window sills available in three types: Vlakke (flat), L-type (with seamless integrated nose) and Schuine (angled/sloping). For interior finishing in residential and commercial buildings.
• Buitendeurdorpels (Exterior Door Thresholds) Traditional exterior door thresholds made of composite stone for wood, plastic and aluminum frames, with weather resistance and proper drainage. For construction companies and contractors on residential and commercial entrances.
• Spekbanden (Band Courses) Architectural band courses in types KK, Z and X that create continuous horizontal lines with matching window sills, for various architectural styles on Dutch residential and commercial facades.
• Muurafdekkers (Wall Covers) Wall covering elements including Wall-Cover, Top-Down, X-type and kit-free variants for weather protection and aesthetic finishing of walls, garden walls and parapets.
• Lateibekleding (Lintel Cladding) Lintel cladding in flat, L-type and loose element configurations for architectural detailing around windows and doors.
• Dagkantbekleding (Jamb Cladding) Jamb cladding in flat and L-type configurations for finishing window and door reveals on residential and commercial facades.
• Gevelplinten (Facade Plinths) Facade plinths available in insulated and non-insulated versions with matching corner pieces for finishing the base of building facades.
• Traptreden (Stair Treads) Composite stone stair treads for renovating existing stairs or creating new ones, suitable for indoor and outdoor use, with optional anti-slip strips.
• Spuwers (Gargoyles / Water Spouts) Composite stone water spouts for facade drainage, preventing rainwater from running down walls; standard 135mm wide with integrated water drain channel.
• Dorpels (Interior Door Thresholds) Interior door thresholds including bathroom thresholds, flat thresholds, wheelchair thresholds and sloped variants with or without dam, for residential and commercial interiors.
• Penantafdekkingen (Pier Caps) Composite stone pier cap coverings for finishing architectural piers and pillars on residential and commercial facades.
• Plinten (Skirtings) Composite stone base skirting elements for interior and exterior building finishing.
• Premax® Laagreliëfdorpels (Premax Low-Relief Thresholds) Registered low-relief thresholds for wooden window frames, in BI, BU, DBI, FOCUS, KAI, LBI, MBI and SB variants, supplied with sealing cuffs and mounting screws for window-frame manufacturers and timber factories.
• Trimax® Laagreliëfdorpels (Trimax Low-Relief Thresholds) Registered low-relief thresholds for the window-frame industry, including BU, DBI, LBI, lift-and-slide door and Silent Base variants with direct-glazing options, for wooden, plastic and aluminum frames.
• Trimax® Hybride Dorpels (Trimax Hybrid Thresholds) Hybrid threshold systems combining features for specific window-frame applications, including Trimax Hybride BU 72 and LBI 52 variants, for window-frame manufacturers serving mixed-material projects.
• Trimax® Parallel Schuif Dorpel (Parallel Slide Threshold) Fiber-reinforced low-relief threshold for sliding doors with optimal wind and water tightness and direct-glazing capability, for window-frame manufacturers in the Kozijnindustrie segment.
• Circulaire Productlijn (Circular Product Line) Sustainable composite stone product line made from recycled materials, expanding Holonite's eco-friendly offerings for sustainable construction projects. Initially illustrated with recycled-content raamdorpels for facade and finishing applications.
• CAD- & Bestekservice (CAD & Specification Service) Online tool for generating STABU specification descriptions and CAD drawings for all products in the standard assortment. Targeted at architects, specifiers and construction companies for tendering and detailing.
• Maatwerk Productie (Custom Manufacturing) Specialist custom (maatwerk) manufacturing service for renovation and new-build projects, with tailored specifications including cutouts, finishes and project-specific sizing. All Holonite products are produced to order due to the extensive sizing range.

Quantifiable outcome

• Products made in the Netherlands (in eigen land)
• +1 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• BMN BouwmaterialencoreChannel Partner/ Reseller/ DistributorProfessional building materials distributor with stock availability for standard Holonite products. Part of the distribution network serving the Dutch market.
• Bouwcenter (Veris Bouwmaterialengroep)coreChannel Partner/ Reseller/ DistributorProfessional building materials distributor network with stock availability for standard Holonite products across the Netherlands.
• BPGcoreChannel Partner/ Reseller/ DistributorProfessional building materials distributor with stock availability for standard Holonite products.
• SakolcoreChannel Partner/ Reseller/ DistributorProfessional building materials distributor with stock availability for standard Holonite products.
• StihocoreChannel Partner/ Reseller/ DistributorProfessional building materials distributor with stock availability for standard Holonite products, serving both contractors and consumers.
• Verhelst (Belgium)coreChannel Partner/ Reseller/ DistributorBelgian professional building materials distributor serving the Belgian market for Holonite products.
• Ben van der Meijden MontageminorImplementation/ SI/ Consulting PartnerExperienced mounting company recommended by Holonite for installation services of their products.

Scale indicators2 records

Recent moves3 records

Expansion highlights5 records

Direct peers

• Haddonstone: UK-based manufacturer of cast stone architectural products including window sills, lintels, and porticos. Closely comparable to Holonite in material (cast stone), product category (facade and finishing elements), and target customer (architects, contractors, heritage/renovation projects).
• Forticrete: UK manufacturer of concrete and cast stone building products including lintels, sills, and architectural masonry. Direct overlap with Holonite's cast stone threshold and lintel offerings.
• Telling Architectural (Telling Industries): US/UK manufacturer of architectural cast stone elements including sills, lintels, and column covers. Direct peer in cast stone facade/finishing components supplied to commercial and residential construction.

Emerging players

• Cosentino: Spanish manufacturer of engineered stone surfaces (Silestone quartz, Dekton) for architectural and construction applications. Partial overlap with Holonite in engineered stone facade/finishing use cases, though Cosentino focuses on surfaces rather than cast structural elements.
• Caesarstone: Israel-based manufacturer of engineered quartz surfaces for interior architectural use. Comparable in engineered stone material technology but focused on countertops and interior surfacing rather than Holonite's exterior cast stone specialty.

Broad incumbents

• Xella Group: European manufacturer of building materials including aerated concrete blocks (Ytong), calcium silicate elements, and mineral insulation. Adjacent incumbent in prefabricated masonry building components, with overlapping customer base in European new-build and renovation.
• Boral Limited: Australia-listed building materials and construction products group (now Boral/CSR) producing masonry, pre-cast concrete, and stone-look building products. Broader incumbent with comparable engineered masonry and architectural stone offerings across Australia and the US.
• Wienerberger: Austrian-listed global manufacturer of clay building products (bricks, blocks, pavers) and facade solutions including stone-look cladding. Broader incumbent in the Benelux building envelope space with adjacent product overlap to Holonite's facade/finishing range.
• Marshalls: UK-listed manufacturer of hard landscaping and building products including concrete and stone facade components. Broader incumbent with overlapping architectural stone products, though primarily known for paving and landscape solutions.
• Forterra: UK manufacturer of clay and concrete building products (bricks, blocks, precast, lintels). Comparable as a broader building products incumbent with an overlapping lintel and masonry range, though larger and more diversified than Holonite.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/holonite
• Xx.com/holonite
• LinkedInlinkedin.com/company/holonite

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds1 record

Investors1 record

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 Holonite