An independent monitor working for the Las Vegas Stadium Authority, however, says the target date for occupancy could be in jeopardy.
Team and construction officials are expected to provide an update Thursday to the stadium oversight panel about the 65,000-seat Allegiant Stadium, the Las Vegas Review-Journal reported Tuesday.
The roof had been scheduled for completion last fall. Installation is now expected in May.
Officials say the stadium is still on track to open July 31, in time to host its first event Aug. 16.
Operations chief Don Webb declined Monday provide details ahead of the board meeting. He has said some work has been completed ahead of time.
Las Vegas-based Grand Canyon Development Partners said a delay in roof installation could result in weather damage to other work completed ahead of schedule.
Construction began in September 2017. The Raiders played their last game in Oakland last month.