Nordstemmen station it had suffered. It was found that the conservation status of the building had been affected by the spread of Serpula lacrymans (dry rot), causing serious deterioration to the roof and other parts of the wooden structure; almost the whole building is affected. Subsequently, the previously closed windows were fitted with grills, supporting the ceilings, which were in danger of collapsing, and new coverings were installed over the roof. Because no buyer had been found for the listed building, Deutsche Bahn submitted an application for its demolition to the Federal Railway Authority (EBA) in Hanover in the summer of 2005.
Serpula vermicularis divided into two. The yellow-coloured body has seven thoracic segments and up to 190 abdominal segments which are protected by the tube. At least four segments with setae (bristles) are found in the thoracic region. "Serpula vermicularis" is cosmopolitan in distribution. It is found in the Pacific and Indian Oceans and the European seaboard of the Atlantic Ocean, but not on the North American coast. It occurs in the intertidal zone and at depths down to . Also along Southern African coast from Olifant's River to Maputo. "Serpula vermicularis" grows on hard substrates. It favours shells of bivalves, boulders and