The Stadium’s roof is made up by 112 panels of white material stretched between an outer truss and an inner tension ring.

A total of 45,000 m² of material has been fitted by a team of 23 expert abseilers.

The cover creates the correct conditions on the field of play for athletes and provides protection for two-thirds of spectators.
 
John Armitt, the chairman of the Olympic Delivery Authority (ODA), said: "The Olympic Stadium is the most visible symbol of the huge progress that has been made on the construction of the Olympic Park and the infrastructure which is transforming East London.

"Last week, we published our next set of milestones for 2010-2011 after hitting all of our milestones for the previous year.

"The project remains on track and within budget and construction of the major venues will be complete by next summer.

"There are around 10,000 workers on the Olympic Park and Olympic Village and the preparations for the Games continue to provide jobs and business opportunities to companies all around the UK .

"Seventy five pence of every pound the ODA spends is an investment in long-term regeneration so a considerable physical legacy from the Games is already largely delivered.”
 
Hugh Robertson, the Minister for Sport and the Olympics, said: "This has been another good year for the ODA.

"The project is on time and within budget with 70 per cent of construction complete. In what is the most challenging year of the building project the ODA continues to make excellent progress as the completion of the Stadium roof shows."

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