HAWKLOK's unique set of specially engineered interlocking grids will revolutionise how a base for a garden building is laid. Made from 100% recycled and recyclable long life polypropylene, HAWKLOK, at 1.5kgs per grid and 60cm x 60cm x 4.5cm thick, is both lightweight and easy to handle. Using ground pressure principles the chosen site need only be reasonably firm but level. As with any project, the better the preparation the better the end result. Thus, HAWKLOK eliminates the need for concrete, slabs and lengthy excavations.