27th June 2022 What radius of wall can you curve or flex the mouldings around? 24mm thick polyurethane has been tested to bend on up to a 500mm radius. 18mm poly min. radius = 400mm 24mm poly min. radius = 500mm 12mm MDF min. radius = 500mm 15mm MDF min. radius = 800mm 18mm MDF min. radius = 1800mm