St Barnabas Church, in Alphamstone, was originally built in the 14th century and is a Grade One listed building.
Churchwarden Charles Dinwiddy said: “The main concern was that the church was shifting a little bit and while we were investigating that we discovered the roof needed repair.
“The work done has also managed to stop damp coming in."
Click here to read this article from the Harwich and Manningtree Standard