Previously, the area had been prepped with a 6 inch layer of woodchips. Woodchips are used to deflect the weight of heavy equipment and protect tree roots.
The Genie lifted the root barrier, drainage systems and wind barriers onto the roof.
While the rest of his crew is unloading supplies, Howard is up on the roof installing the root barrier. The root barrier is a 30 mil polyethylene sheet which prevents plant roots penetrating the roofing membrane.