SiooX, the Swedish company renowned for its patented silicate-based wood protection technology, has been acquired by Russwood Ltd, a family owned, leading UK supplier of high-quality and sustainable timber products. With more than 30 years of experience, Russwood is a well-established provider in the timber industry, specialising in cladding, decking, flooring, and fixing solutions.

Russwood Ltd, a prominent UK supplier of high-quality and sustainable timber products, has announced the acquisition of SiooX, the Swedish firm celebrated for its globally patented silicate-based wood protection technology. This prudent merger is poised to create a formidable force in the industry, combining Russwood’s three decades of expertise in sourcing, processing, and supplying premium timber with SiooX’s innovative chemical engineering. The combined entity will immediately enhance the availability, quality, and technical support for advanced, long-lasting wood protection solutions, particularly for exterior applications like cladding and decking.

Based in Newtonmore, in the Scottish Highlands, Russwood is a family-owned business with a strong reputation for specialisation in comprehensive timber solutions, including cladding, decking, flooring, and precise fixing systems. Their long-standing technical proficiency and product development capabilities are now being leveraged to propel SiooX into its next phase of global growth and market expansion.

The core value proposition driving this acquisition is SiooX’s proprietary silicate technology. This wood protection system is a significant departure from conventional coatings, which often form a film on the wood surface that is prone to cracking, peeling, and uneven degradation over time.

Instead, the SiooX system, composed primarily of silicon and potassium—two non-toxic, natural mineral substances—penetrates deep into the wood fibres. Through a process similar to natural petrifaction, the components react with moisture and atmospheric carbon dioxide to form an inert, flexible silica network within the timber structure.

Russwood has been a long-time UK specification partner and factory coating partner for SiooX, meaning the companies already share technical knowledge and a rigorous commitment to quality control. The acquisition centralises this expertise, ensuring greater quality assurance, full traceability, and unified technical support from the point of timber selection to final application.

This move reinforces the commitment of both businesses to sustainable practices. By significantly extending the lifespan of exterior timber—up to 15 years on vertical cladding applications—SiooX reduces the need for frequent maintenance and early replacement, thereby minimising resource consumption and contributing positively to the circular economy within the construction sector.

The newly combined operation will be guided by an experienced new management team in Gothenburg, Sweden, where SiooX’s core product development is concentrated. Russwood has expressed strong confidence in this team, which was appointed in February 2025, to continue leading the company’s development and growth trajectory.

Industry analysts anticipate that the integration with Russwood’s robust supply chain and technical capabilities will accelerate SiooX’s innovation pipeline. SiooX is already focusing on the industrial market, with ongoing research into new pigment options and enhanced protection against environmental threats like UV radiation and even fire, and termites. Russwood’s recent success in developing a certified, industry-first system that combines SiooX with the non-toxic Burnblock® Fire Retardant treatment further exemplifies the immediate gains possible from this enhanced partnership.

Ultimately, the acquisition of SiooX by Russwood is more than a simple business transaction; it marks the consolidation of two leaders dedicated to advancing the performance and sustainability of wood as a building material. It signifies a clear investment in the future of the timber industry, promising architects, specifiers, and builders across the UK and beyond an elevated standard of quality, service, and innovative, long-life wood protection.

About SiooX
SiooX develops wood protection products based on globally patented silicate technology. The products provide timber with a natural silver-grey patina while offering long-lasting protection against weather, moisture, and biological impact.

The company operates in both the consumer market and the industrial market. The industrial business is undergoing strong international growth, with a focus on new pigments and enhanced protection against UV radiation, fire, and termites – further strengthening SiooX’s position as a global innovator in wood protection.

About Russwood
Russwood Ltd, headquartered in Newtonmore in Highland Scotland, is a leading supplier of sustainable timber products for cladding, decking, flooring, and fixing solutions. The company combines technical expertise with a commitment to sustainability offering innovative solutions including virtual samples, technical advisory services and certified system combinations. For more than 30 years, Russwood has established a strong brand renowned for premium-quality timber products, technical expertise and close collaboration with architects and clients to achieve exceptional design and environmental standards.

Source: timberdevelopment.uk