How To Wash The Windows At Frank Gehry’s

To get to the next floor, the crane moves the rig out from the curtain wall, realigns the basket, and drops.

How to Wash the Windows at Frank Gehry’s 76-Story Eight Spruce Street: Conventional window-washing rigs slide up, down, and side to side to get around a building, but at Eight Spruce, the apparatus has to contend with lots of curves and angles. (Only the south face is flat.) Starting on the roof, two washers load their low-tech supplies—squeegees, dish soap, a bag lunch—into a custom-designed rig comprising six “baskets,” which move individually. A telescoping crane lowers the rig to a fixed position. Then a basket—or baskets, depending on the location—is pushed snugly against the glass-and-steel exterior. To get to the next floor, the crane moves the rig out from the curtain wall, realigns the basket, and drops. The job is managed by R&R Scaffolding, which also handles other unusually shaped skyscrapers, like the under-construction One57. Business is up 500 percent over the last five years.

$1.5 million to $3 million: Estimated combined cost of system installation (sans rig purchase) plus one round of cleaning.
428,000: Square feet of surface area.
2,000+: Windows.
25 mph: Maximum wind speed at which the rig actually works.
6: Months to complete annual cleaning

“I’m not really afraid of heights, but the first few months were a little iffy. You’re just looking out at those cables holding you up, wondering, Is this going to be enough?” —Juan Portelles, R&R Scaffolding