The ecobase fastfit plastic diy shed base system offers a quick and easy method of creating a base for a wooden shed playhouse summerhouse or similar garden building each kit is comprised of multiple 500x500mm square tiles which interconnect by a simple snap together fixing method so no specialist tools are required the tiles are made in the uk from 100 recycled plastic the open grid design of the tiles allows you to fill them with pea gravel or similar small aggregate to reinforce the