Updated

LONDON (Reuters) - Planners have given London 2012 Olympic organizers permission to build a temporary water polo center with an inflatable roof.

The silver-colored venue, next to the striking aquatics center in the south of the Olympic Park, will have a sloping rippling roof, made of air-inflated recycled PVC cushions.

The lightweight roof will provide extra insulation and reduce condensation, organizers said.

"The Water Polo Arena is a distinctive and dynamic addition to the entrance to the Olympic Park," Olympic Delivery Authority Chief Executive David Higgins said in a statement.

"Its innovative shape and lightweight structure will look great and work well for spectators and athletes alike."

Construction on the asymmetric 5,000-seater venue is due to start next spring and will be finished by the spring of 2012.

Contractors and suppliers have yet to be appointed.

The venue will have a silver PVC membrane covering a steel structure as well as translucent shard-shaped panels. It is due to be dismantled after the Games and moved elsewhere either in full or in part.

(Writing by Avril Ormsby; Editing by Steve Addison and Pritha Sarkar)