Tipperary Fire Service is fighting an extensive blaze at the Tippo International furniture factory in Nenagh.
Three units from the Nenagh, Thurles and Roscrea fire service attended the fire which broke out at shortly before 7pm on Sunday.
The blaze continue throughout the night and the Thurles/Nenagh Road (R498) remains closed at Ballinamona Cross. Diversions are in place until later this morning.
No one is believed to have been injured in the fire.