Unlike Clayfibre, which emits salts, Fibrestone will not patinate greatly through exposure to the elements. Fibrestone should be your choice of material if you would like your garden planter to maintain a consistent appearance. Fibrestone is easily cleaned – we recommend simply wiping down with a damp cloth as required. It can also be restored, unlike Clayfibre, with resin based paint, although this is unlikely to be required.