New from the USA are these pavers from www.vastpavers.com that are a green alternative to concrete. They are made from 95% recycled tyres and plastic. Sitting neatly on a grid system, they are easy to lay and also take up. The pavers are available in a range of muted and natural colours and in three thicknesses.
Great for roof gardens and balconies as they are lighter than concrete or stone.
http://vastpavers.com/products/composite_paver/general_information.php
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