Washington Redskins officials recently explored the possibility of having a roof built over FedEx Field in hopes of hosting a Super Bowl there. But, according to a spokesman for team owner Daniel M. Snyder, club officials have rejected the idea as too costly.

"It was one of the things that was looked at while looking at ways to improve things at the stadium [but] it's not going to happen," spokesman Karl Swanson said yesterday. "It has been ruled out."

Snyder was considering making a bid to host the Super Bowl in 2012 in conjunction with the Baltimore-Washington region's bid to host the summer Olympic Games that year, according to people familiar with the deliberations.

Snyder hired HOK, the Kansas City-based architectural firm that has become prominent for its work in stadium design. HOK submitted a price list and a series of computer-generated depictions of what the stadium would look like with a roof, and the price apparently ranged as high as approximately $70 million for a permanent roof, sources said.

"Any route you went would have cost double-digit millions, and the payback would not have been that extensive," Swanson said. "The price versus the potential payback did not make it worth pursuing any further since there are no guarantees in terms of hosting the Super Bowl."

The Redskins don't feel a roof is necessary for regular season games at FedEx Field, Swanson said.