RootBarrier® TopCover is a technological rubber barrier and is applied on the Platinium around the tree. The material is a mixture of flattened, 100% recycled rubber snippets. TopCover is elastic, it adapts to the tree as it grows without constraint or damage to the bark. TopCover is an open, 5 cm thick, water-permeable mass, which prevents evaporation and regulates irrigation. The material can be reused or repaired, it is durable and does not warp through heat, cold or ageing. TopCover is applied on top of the Platinium around the tree.