A futuristic terminal roof at Paris Charles de Gaulle Airport, which killed four people when it collapsed last May little more than two years after its construction, will be rebuilt, authorities said on Thursday.

A new domed roof on Terminal 2E was the best way to guarantee security for passengers and airport workers, Aeroports de Paris (ADP) said in a statement.

An official report last month concluded that the terminal roof had been weakened by temperature changes that had caused the building's outer shell to shift by one or two centimetres daily and wore down the concrete roof.

The terminal, used mainly by national carrier Air France, has been only partially reopened.

"Based on internal and external studies, Aeroports de Paris has chosen to reconstruct the roof," it said in a statement. "Only a reconstruction, guided by the principle of precaution, can assure fully the need for security."

The statement said ADP hoped to reopen all of Terminal 2E during the winter of 2007/2008. It said the lower levels of the terminal were safe and could be kept intact while the roof was rebuilt.

The French government said last month it planned to press ahead with selling off shares in ADP, which helped build the terminal at a cost of EUR750 million (USD$973.2 million). It is designed to handle 10 million passengers a year.