dethier et fils

What dethier et fils does

Dethier & Fils Entreprise is a second-generation, family-owned construction services company headquartered in Weywertz, Belgium, with a secondary location in Faymonville. The company provides professional plastering, facade insulation, exterior painting, and scaffolding rental services to residential and commercial customers in the German-speaking Belgian community and Wallonia. Its service portfolio is structured around five core offerings: interior plastering (Innenputz), exterior plastering (Aussenputz), facade insulation (Fassadenisolierung), scaffolding rental (Gerüstverleih), and exterior painting (Aussenanstrich).

The company's technical specialization lies in the application of a wide range of traditional and modern plaster and render systems, including clay plaster (Lehmputz), lime plaster (Kalkputz), gypsum plaster (Gipsputz), silicate plaster (Silikatputz / Crépi silicate), mineral plaster (Mineralputz / Crépi minéral), scratched plaster (Crépi gratté), and silicone resin coating (Silikonharzbeschichtung / Enduit silicone). These materials provide functional benefits such as weather protection, vapor permeability, moisture regulation, and protection against fungi, algae, and moss. Silicone resin variants combine water repellence with low vapor diffusion resistance, while clay and lime plasters are positioned as ecological, allergy-friendly options that positively influence indoor air quality.

Dethier & Fils operates a project-based, direct-to-customer business model with pricing quoted per project via phone or website inquiry. The company reaches customers through a bilingual German/French website and direct sales contact, with no intermediaries, resellers, or institutional channels. Its customer base is segmented between individual homeowners (primary) and large construction projects (secondary), and its geographic scope is confined to regional Wallonia. Two family members, Didier Dethier (Owner) and Stany Dethier, lead operations. No external investors, subsidiaries, patents, certifications, or partnerships are disclosed in the available data.

Name

dethier et fils

Legal name

Dethier & Fils Entreprise

Website

https://dethier-fils.be

Company type

Private

Founded year

1996

Operating status

Operating

Short description

Dethier & Fils is a second-generation, family-owned Belgian construction company providing interior and exterior plastering, facade insulation, exterior painting, and scaffolding rental services to individual homeowners and construction projects across Wallonia, specializing in clay, lime, gypsum, silicate, mineral, and silicone resin plaster systems.

Ownership category

akta.pro rank

Product category

Plastering and Facade Construction Services

NAICS

Painting and Wall Covering Contractors (238320), Drywall and Insulation Contractors (238310), Siding Contractors (238170)

SIC

Coating, Engraving & Allied Services (3470)

akta.pro primary industry

Painting, Decorating & Wallcoverings (IMAFANAI)

akta.pro secondary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

Keywords

• Plastering services
• Facade insulation
• Painting services
• Scaffolding rental
• Construction coatings

Headquarters

HQ city

Weywertz

HQ country

Belgium

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Plastering Services: Professional plastering work for interior and exterior applications, including walls and ceilings. Services are delivered as project-based work for residential and commercial properties.
2. Facade Insulation Services: Facade insulation installation services to improve building energy efficiency and weather protection.
3. Scaffolding Rental: Scaffolding rental services for construction and renovation projects, providing temporary access equipment.
4. Exterior Painting Services: Exterior painting and coating services for building facades.

Distribution channels1 record

Marketing channels1 record

Core offering

Dethier & Fils is a Belgian family-owned construction company that specializes in plastering works (pleisterwerken), silicate plaster, silicone resin coating, render/facade cladding (crepi gevelbekleding), painting, facade insulation, and scaffolding rental (steigerverhuur). The firm serves both residential and commercial construction projects across Belgium, principally operating from Weywertz and Faymonville.

Product overview

Dethier & Fils is a second-generation Belgian construction company offering a comprehensive range of plastering and facade services. The core service portfolio consists of interior plastering (Innenputz/Plafonnage), exterior plastering (Aussenputz/Enduit extérieur), facade insulation (Fassadenisolierung/Isolation des façades), scaffolding rental (Gerüstverleih/Location d'échafaudages), and exterior painting (Aussenanstrich). The company specializes in various plaster materials including clay plaster (Lehmputz), lime plaster (Kalkputz), gypsum plaster (Gipsputz), silicate plaster (Silikatputz/Crépi silicate), mineral plaster (Mineralputz/Crépi minéral), scratched plaster (Abgeschabter Putz/Crépi gratté), and silicone resin plaster (Silikonharzputz/Enduit silicone). The company operates from two locations in Belgium: Weywertz (Bahnhofstr. 47) and Faymonville.

Differentiator

Problem solved

Functional benefit

Products and services

• Plastering works (pleisterwerken)
• Silicate plaster (silicaatpleister) Mineral-based silicate plaster application as a breathable, durable facade and wall finishing for residential and commercial buildings.
• Silicone resin coating (siliconenharscoating) Silicone resin-based exterior coating system applied to facades for weather resistance and aesthetic finishing.
• Silicone coating (silicone-based facade coating) Silicone-based facade coating service marketed to French-speaking clients, delivering durable exterior wall finishes.
• Render / facade cladding (crepi gevelbekleding) Render and decorative facade cladding installation for residential and commercial buildings in Belgium.
• Facade insulation External facade insulation installation for energy-efficient residential and commercial buildings, often combined with render or coating finishes.
• Painting services Interior and exterior painting services for residential and commercial properties in Belgium.
• Scaffolding rental (steigerverhuur) Rental of scaffolding equipment for construction sites, supporting the firm's own projects and external contractors in Belgium.

Quantifiable outcome

• Individual appearance through variety of structures and grain sizes
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Scale indicators1 record

Expansion highlights2 records

Broad incumbents

• Brillux: German manufacturer of paints, plasters and facade coatings serving trade contractors. Comparable as a broad incumbent whose silicone-resin, silicate and mineral plaster ranges parallel Dethier's specialty offerings.
• Caparol: German manufacturer of paints, silicate renders and facade systems sold through trade applicators. Comparable as a broad incumbent whose product portfolio closely mirrors Dethier's exterior painting and render materials.
• Baumit: Large European manufacturer and supplier of plaster, render and facade insulation systems that overlap directly with Dethier's product portfolio (clay, lime, silicone resin renders). Comparable as a broader incumbent shaping the materials and standards Dethier works with.
• Sto SE: German-headquartered manufacturer specializing in facade systems, external insulation and silicone-resin/silicone-render finishes. Highly comparable on facade-render technology and ETICS systems that Dethier also applies.
• Knauf: Global building materials group with deep ranges in gypsum plaster, drywall and facade systems. Comparable as a broad incumbent supplying many of the same product families Dethier applies, including gypsum-based interior plasters and exterior render systems.
• Röfix: European manufacturer of lime, silicate, silicone-resin and mineral renders as well as ETICS facade systems. Comparable through its product mix overlapping almost entirely with Dethier's plaster and facade-insulation offering.
• Sakret: Manufacturer of dry-mix mortars, plasters, renders and tile adhesives. Comparable as a broad incumbent whose plaster and facade-mortar product families overlap with Dethier's applied services.
• Hasit: European manufacturer of lime, mineral, silicate and silicone-resin plasters plus ETICS facade systems. Comparable on render chemistry and facade-insulation systems overlapping with Dethier's portfolio.
• Saint-Gobain Weber: Major European manufacturer of facade renders, plasters, ETICS and tile-fixing mortars. Comparable through its overlapping product range with Dethier (silicate, silicone resin, mineral and scratched renders) and shared facade-insulation theme.

Emerging players

• KEIM: Specialist manufacturer of silicate paints and plasters. Comparable as a more specialized player in the silicate-render niche that Dethier also offers (Silikatputz/Crépi silicate).

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights5 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 dethier et fils