Installation work begins on Minnesota's largest green roof
Installation of the 2.5 acre green roof vegetation on the City-
owned Target Center begins today. Over the course of two days a
165 ton crane will hoist five truckloads of plant material,
which includes 900 rolls of pre-grown vegetated mats of sedum
and native plants for installation on top of the arena's main
roof. More than 540 cu yards of soil is being blown onto the
rooftop between 120’– 165’ in the air, using a blower truck. The
roof is the largest green roof in Minnesota and, at the time of
design, the fifth largest green roof in the United States. The
green roof is installed on a state-of-the-art waterproofing
membrane which includes a leak detection system called Electro
Field Vector Mapping (EFVM). The membrane will help withstand
constant dampness, high alkalinity, and exposure to plant roots,
fungi, and bacterial organisms as well as varying hydrostatic
pressures. The green roof features a 2.75” growing zone in the
center of the main arena r