Clitheroe Library will remain under wraps until the end of March while £100,000 of restoration work is carried out.
Scaffolding has been erected around the library, which will continue to be open as normal during the work.
A spokesman for Lancashire County Council said: “The main purpose of the work we have commissioned is to consolidate the stonework and make it safe, as there have been several instances of delaminated material falling to the street, necessitating the need for safety netting to be fixed to the building.”
It is also planned to replace the material used in ad hoc repairs with natural stone, as well as isolated examples of pointing replacement, the repair and redecoration of windows and other woodwork.
Some minor internal health and safety works are also planned.
The works on the £108,000 restoration project started on January 6th and are scheduled to be completed by March 28th.
The project was delayed while the council obtained listed building consent.
Ribble Valley Borough Council’s conservation officer and other interested parties have been invited to inspect the works as they progress.
The Lancashire County Council-owned building was constructed in 1905 with money from the Carnegie Trust. In 1990 there was a major refurbishment when the library was extended into a building owned by Ribble Valley Borough Council.