The Lord Louis Library is set for maintenance work - and there will be some days when the building is closed.
The library in Newport will undergo repairs from Monday, October 14, and is expected to be finished by the end of December.
The main library will stay open as much as possible, but will close on Thursday, October 10, Friday, October 11, and Saturday, October 12, for book relocation.
Further closures are expected in late December, along with possible lunchtime closures and changes to opening hours.
Colin Rowland, director for community services, said: "Although there may be some temporary inconvenience due to construction work, the end result will be worth it.
"Residents will still be able to use all the libraries online services while building works take place. We’d also like to remind and encourage residents to visit the other libraries across the Island, which are open as normal."
Councillor Julie Jones-Evans, cabinet member for economy, regeneration, culture and leisure, said: "This investment reflects our commitment to the library service and our appreciation of its value to the local community."
Public computers, printing, and photocopying will remain available during opening hours.
House Rules
We do not moderate comments, but we expect readers to adhere to certain rules in the interests of open and accountable debate.