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Accsys, the fast-growing company that enhances the natural properties of wood to make high-performance and sustainable building materials, is pleased to announce that The Sansin Corp. is offering up to 15 years of coating performance coverage on Accoya when finished using Sansin’s recommended Precision Coat KP-System. The announcement follows more than 10 years of independent, third-party outdoor exposure testing.
The limited warranty covers translucent Precision Coat KP-System finishes on vertical Accoya surfaces, applied by eligible factory finish partners. It is among the longest coating performance warranties offered on wood substrates.
Long-term coating performance depends on both coating technology, application expertise and substrate stability,” said John Alexander, group commercial director at Accsys. “Sansin’s investment in product innovation and long-term testing on Accoya reflects a shared commitment to performance and innovation. The results demonstrate the powerful collaboration between Accoya’s exceptional dimensional stability and Sansin’s advanced coating systems, helping extend maintenance intervals and deliver low maintenance and long-lasting beauty and protection for exterior applications.”
The new warranty reflects a broader shift in exterior building products toward complete performance systems, in which the substrate and finish are proven together to support durability, aesthetics, and lower lifecycle performance. For architects, manufacturers, and homeowners, coating system validation can provide additional confidence in applications where finish durability and long-term appearance are essential.
“At Sansin, we’ve always been committed to the highest standard in wood coating performance,” said Sjoerd Bos, managing director of Sansin. “Collaborative testing with Accsys reinforced our confidence in the synergy between Accoya and our KP-40 and KP-50 systems. Coated with these systems, the stability and durability of Accoya Radiata Pine significantly extend maintenance intervals on vertical surfaces.”
Accoya’s acetylated wood technology permanently enhances sustainably sourced wood, delivering exceptional durability and outstanding dimensional stability. By significantly reducing swelling and shrinkage compared with traditional wood species, Accoya helps minimize stresses that can contribute to coating deterioration over time, supporting long-lasting appearance and reduced maintenance.
Accoya is used globally in demanding exterior applications, including cladding, decking, windows, doors, and millwork, where durability, stability, and reduced maintenance over the lifecycle are critical.
Accoya supports a broad network of coating and finishing partners worldwide and continues to encourage independent testing and performance validation that helps customers make informed specification and finishing decisions.
Accoya is high-performance acetylated wood, manufactured using proprietary acetylation technology that permanently enhances the properties of sustainably sourced wood. With exceptional durability, outstanding dimensional stability, and a 50-year above-ground warranty, Accoya is trusted worldwide for demanding exterior applications where long-term performance matters.
Since 1986, The Sansin Corp. has developed advanced, water-borne wood coating technologies engineered to work with wood for superior, long-lasting protection. Sansin’s low-VOC systems penetrate deeply to form a durable, breathable barrier and are used across residential and commercial exterior applications worldwide.
About Accsys is a fast-growing business with a purpose: changing wood to change the world. The company combines chemistry, technology, and ingenuity to make high-performance wood products that are extremely durable and stable, opening new opportunities for the built environment and giving the world a choice to build sustainably. Accsys transforms fast-growing, certified sustainable wood into building materials with characteristics that match or better those of man-made, intensely resource-depleting, and heavily carbon-polluting alternatives.
