Urgent 'structural remediation' is needed at Charlton Athletic's Valley Stadium after a survey revealed a defect in the roof of the club's 6,000 seat East Stand. A survey of the whole ground carried out as part of redevelopment of the North Stand revealed a 'structural defect'. NCE understands that a bracing member which should have been a bolted connection was welded instead when it was found that the bolt holes didn't line up. Scaffolding has been erected at the back of the six year old stand and inspectors from Greenwich Borough Council were expected to meet contractors and engineers to inspect the roof after NCE went to press. Work may not be complete in time Charlton's home game with Sunderland to go ahead at the weekend.