WJ Group

What WJ Group does

WJ Group is a UK-based specialty timber engineering and treatment company founded in 2007 and headquartered in Hull, East Yorkshire. It operates through three wholly-owned subsidiaries — WJ Components Ltd (timber engineering), WJ Timber Treatments Ltd (preservative treatments), and WJ Fire Retardant Ltd — delivering preservative, fire-retardant, and anti-slip timber treatments alongside manufactured engineered components such as roof trusses, I-beams, glulam beams, CNC-machined parts, and a patented timber caravan chassis.

The company's core technology centres on proprietary chemical treatments: the FireWright brand uses an all-natural, biodegradable fire-retardant powder dissolved in water achieving Euroclass B s1, d0 classification, while the DeckWright brand applies road-traffic-grade resin technology achieving a Pendulum Test Value of 71 under BS 7976:2002. Engineering capabilities include CNC router machining, specialist kiln drying, and a patented timber chassis (GB202307097A) offering a sustainable alternative to steel with carbon footprint of approximately -42kgCo2e versus 1700kgCo2e for steel equivalents.

WJ Group generates revenue primarily through per-cubic-metre and per-unit treatment fees for preservative, fire-retardant, and anti-slip services, one-time component sales to caravan and leisure home manufacturers, bundled timber haulage via an in-house HGV fleet, and merchant-channel resale. The company operates five UK facilities (Hull x3, Rochester, Kirkburn, and Port of Creeksea in Essex, the latter via a 2025 partnership with Baltic Distribution) positioned near major ports to serve timber importers, construction firms, holiday park operators, leisure home manufacturers, and merchants across England, Scotland, and Northern Ireland.

Name

WJ Group

Legal name

WJ Components Ltd

Website

https://wj-group.co.uk

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

101–250 employees

Short description

WJ Group is a UK-based specialty timber engineering and treatment company operating five facilities near major ports, serving construction firms, leisure home manufacturers, holiday parks, and timber importers with proprietary preservative, fire-retardant (FireWright), anti-slip (DeckWright), and engineered component solutions.

Ownership category

akta.pro rank

Headquarters

HQ city

Kingston upon Hull

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Timber Treatment Services: Preservative treatments (high and low pressure), fire-retardant treatments, and anti-slip treatments applied to customer timber or supplied as finished products. Revenue generated through per-cubic-metre or per-unit treatment fees plus haulage services.
2. Timber Engineering Components: Manufacture and sale of timber roof trusses, I-beams, timber chassis, glulam beams, CNC machined parts, caravan flues, and modular caravan decking. Revenue from component sales to caravan and leisure home manufacturers.
3. Anti-Slip Service: Processing customer's boards through anti-slip treatment service. Customers can send boards to facilities or use WJ's HGV fleet for collection and delivery. Revenue from treatment service fees.
4. Timber Haulage: Fleet of HGVs capable of collecting and delivering timber across the UK. Revenue from haulage services, often bundled with treatment orders.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

WJ Group provides industrial timber treatment services (high and low pressure preservative treatments, fire-retardant treatments under the FireWright brand, and anti-slip decking under the DeckWright brand) and manufactures engineered timber components including roof trusses, I-beams, glulam beams, a patented timber chassis for caravans/lodges, CNC-machined parts, caravan flues, modular caravan decking, and shepherd's hut kits. The company also operates an in-house HGV fleet for timber haulage across the UK, serving timber importers, construction firms, leisure home manufacturers, and holiday park operators.

Product overview

WJ Group is a timber engineering and treatment specialist offering a portfolio of branded products and services. The company operates two main divisions: Timber Treatments (including preservative treatments, fire retardant treatments via FireWright brand, and anti-slip decking via DeckWright brand) and Timber Engineering (manufacturing roof trusses, I-beams, glulam beams, timber chassis, and CNC machining for the caravan and leisure home industry). The DeckWright sub-brand provides anti-slip decking products and services, while FireWright focuses on fire retardant timber treatment. Services include timber haulage, bespoke CNC machining, and modular caravan decking installation. The company operates treatment facilities in Hull, Rochester, Kirkburn, and Creeksea.

Differentiator

Problem solved

Functional benefit

Brands

• FireWright: Fire retardant timber treatment brand offering natural, biodegradable fire-retardant solution for timber, plywood, cladding, and scaffold boards. Products meet Euroclass B s1, d0 standards.
• DeckWright

Products and services

• DeckWright Anti-Slip Decking Premium anti-slip timber decking boards and treatment service using road traffic grade resin technology, applied to grooved timber boards to provide slip resistance even when wet, achieving Pendulum Test Values of 71 ('low slip potential') and BS 7976:2002 compliance. Sold to construction firms, holiday parks, architects, and timber merchants across the UK.
• FireWright Fire Retardant Treatment All-natural, biodegradable fire retardant timber treatment using a patented powder dissolved in water. Clear liquid solution applied via pressure impregnation and kiln drying, preserving timber's natural appearance while achieving Euroclass B s1, d0 classification. Sold to construction firms, architects, and cladding suppliers for timber, plywood, cladding, and scaffold boards.
• Timber Roof Trusses Designed and manufactured timber roof trusses using value engineered designs and CNC precision cutting, supplied to the UK's caravan and leisure home industry.
• Timber I-Beams Engineered I-Beams for floor and wall applications in caravan and park home construction, including curved variants for innovative designs.
• Timber Caravan Chassis Patented sustainable timber chassis for park homes and caravans, offering a durable, low-carbon alternative to steel chassis with carbon storage benefits. Supplied to leisure home and lodge manufacturers.
• Glulam Beams Manufactured and supplied glulam ridge beams for caravan and park home manufacturers.
• CNC Router Machining Bespoke CNC machining services for small or large scale projects, providing precision cutting of OSB and timber components with minimal waste.
• Modular Caravan Sundecks Manufactured and installed bespoke modular caravan sundecks for holiday parks, using an engineered modular system for easy installation.
• Shepherd's Hut Kits Bespoke and standard shepherd's hut kits available weather tight or as a shell, for the general public and leisure market.
• Caravan Flue Manufacture Leading flue manufacturer solely supplying to the caravan and leisure home industry.
• High Pressure Preservative Treatments Industrial-scale high pressure preservative timber treatment services delivered at multiple UK sites with large treatment tanks, processing customer timber or supplied timber to required Use Classes.
• Low Pressure Preservative Treatments
• Protective Coatings Protective coating services applied to timber products to enhance durability and longevity.
• Timber Haulage UK-wide timber haulage service using an in-house fleet of HGVs, collecting and delivering timber across the country and often bundled with treatment orders.
• DeckWright Anti-Slip Service Service where customers send boards to WJ Group facilities for anti-slip resin application, including collection via the HGV fleet, treatment, and delivery back to the customer or job site.

Quantifiable outcome

• Timber chassis achieves carbon footprint of -42kgCo2e vs 1700kgCo2e for steel chassis
• +3 more outcomes

Named customers13 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

One partnership is on record.

• Baltic DistributioncoreStrategic or Co-development Partner · 21 February 2025Strategic partnership at The Port of Creeksea, Essex. WJ Group opened a new preservative treatment site at Baltic Distribution's port facility. This partnership enables WJ to treat timber for large-scale timber importers with excellent logistical advantages near key distribution channels.

Scale indicators5 records

Recent moves11 records

Expansion highlights4 records

Direct peers

• James Jones & Sons: UK-based, family-owned integrated timber group producing engineered wood products (I-joists, glulam, structural timber) and treated timber. Direct overlap with WJ's engineered components and treatment divisions.
• Koppers Performance Chemicals: Largest global supplier of wood preservatives (formerly Osmose). Competes head-on with WJ Timber Treatments' high- and low-pressure preservative service offering.
• Lonza Wood Protection: Global leader in fire-retardant and preservative treatments for timber; sells competing chemistry to construction and cladding markets. Direct competitor to WJ's FireWright fire-retardant service.

Broad incumbents

• Travis Perkins: UK's largest building materials distributor; operates timber and joinery categories that include treated and engineered timber products. Indirect competitor and potential channel partner.
• Stora Enso: Major European producer of engineered timber (CLT, glulam, LVL) and treated wood; competes across multiple of WJ's engineered-timber lines at substantially greater scale.
• BSW Timber: UK's largest integrated sawmilling and timber-products group (now part of BSW Group). Overlaps with WJ in treated timber, engineered products and merchant supply at significantly larger scale.
• Howarth Timber & Building Supplies: National UK timber merchant and processor with treatment facilities. Competes with WJ in preservative treatment services and merchant-grade timber supply.
• West Fraser (formerly Norbord): Global engineered wood panels (OSB, MDF) manufacturer; overlaps with WJ Components' engineered wood and CNC-cut OSB roof truss lines.

Emerging players

• Vincent Timber: UK specialist timber supplier for cladding and architectural projects; named WJ customer but also operates in treated/fire-retardant cladding where FireWright competes.
• Arbor Forest Products: UK-focused decking manufacturer and distributor (Arbordeck) with branded non-slip and composite products; comparable to DeckWright in the anti-slip and leisure decking category.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/WJTimber
• Facebookfacebook.com/WJTimber
• LinkedInlinkedin.com/company/wj-timber

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 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 WJ Group