Bathroom suite maker Qualceram Shires plunged into the red last year after booking a charge for restructuring at a British plant and suffering higher energy costs.
The net loss amounted to €5.39 million, worsened by a one-time charge of €6.1 million related to restructuring at a factory in the English town of Longton.
Qualceram posted a profit of €5.46 million in 2004.
Shares in the company dropped three cent, or 2.3 per cent, to €1.25.