Accoya® wood Accoya is the trade name for a new product that features sustainably-sourced Radiata Pine timber, traditional wood, modified at molecular level. This timber is chemically modified to leave the internal cell structure relatively inert with a non-toxic, fully recyclable wood. Available in a range of grades and sizes, to correspond with different uses. Overall benefits are: It’s these physical advantages which can offer substantial benefits in a number of outdoor joinery applications