Addastone tree pit designed to provide an attractive and aesthetically pleasing porous paving system, using a variety of natural or recycled aggregates. Available in either Epoxy or a UV stable Polyurethane, the resin binder is mixed with our range of natural or recycled aggregate with a typical grading of 6-10mm. The open texture achieved provides a highly porous resin bound surface, allowing the tree roots access to both air and water penetration.