Durham Castle is facing a battle against DAMP

Durham Castle, built in the 11th century, is facing a serious damp problem Norman Chapel is one of the worst affected sections of the former palace Durham University hopes to root out the damp with maintenance work Experts described the works as 'essential' to prevent further deterioration

By Ollie Gillman for MailOnline

Published: 06:20 EST, 9 January 2015 | Updated: 06:37 EST, 9 January 2015

It was a stronghold built by the Normans to help defend England from rebellious northerners and marauding Scots, but 11th century Durham Castle now faces another battle - against damp.

Durham University, responsible for the upkeep of the grand monument, hopes to root out the damp in the oldest parts of the castle.

The Norman Chapel, which is almost 1,000 years old, is one of the worst affected sections of the former bishop's palace and could undergo vital work to dry it out.

Durham Castle is facing a battle against damp, with some of the oldest sections of the grand monument worst affected

Durham University, responsible for the castle's upkeep, hopes to carry out work to eradicate the damp

The university has submitted proposals to Durham Council and hopes to eradicate the damp by building a retaining wall.

Trevar Armour,director of estates and buildings at Durham University said: 'There is currently some dampness affecting the walls of the Norman Chapel at Durham Castle.

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Durham Castle is facing a battle against DAMP