Borneo ironwood, known locally as Ulin, is a remarkable wood. It's extremely slow growth rate at less than 0.5mm a year results in a highly dense timber ideal for exterior applications. Ulin heartwood has a Class 1 natural durability above and in-ground rating, and is prized for its natural resistance rot, decay, termites and weathering. It has long been used by Kalimantan Dayak communities in traditional house construction as well as for bridges and roads. Ulin is endemic to only a few places in Southeast Asia with the majority of remaining distribution limited to Borneo island. Ulin trees can live to be more than 1,000 years old. Kaltimber's Ulin comes from disused structures in Kalimantan including houses, warehouses, bridges, roads, jetties and other structures. This material yields a gorgeous and long-lasting flooring product