Remedial conservation involves the treatment of objects from the collections and is extremely time consuming.

This can involve such things as the cleaning of items, strengthening fragile objects or revealing surface decoration et cetera.

These treatments are carried out by staff with specialist training in a number of separate conservation disciplines, including textiles, folklife, archaeology, furniture, applied arts and ceramics, operating in separate studios within the overall umbrella of the Conservation Department.  

Important archaeological finds are treated in the Conservation Department of the National Museum of Ireland, where they are cleaned, stabilised and investigated.

In recent years this has included a number of important discoveries from Irish peat bogs, including the Faddan More Psalter.