Tall Building Repairs: Tying a Double Knot for Roof Rope

Tall Building Repairs: Tying a Double Knot for Roof Rope. Part of the series: Building Repair: How to Repair the Side of a Tall Building. When tying a figure-eight knot at the bottom end of a rope attached to the roof of a tall building, use a technique slightly different from the one used to tie the rope to the roof. Learn how to tie a double knot in the roof rope when repairing a tall building in this free video on commercial building repair from a construction professional. Read more: www.ehow.com/video_4993420_tal...