Ukri Oy, a company specialised in building repair and restoration work , has spent part of this summer reviewing and cleaning the statues on the façade of St Henry's Cathedral. Some of the statues are in bad shape, so more work will have to be undertaken in the near future. Further information is available in the report produced regarding this summer's work. It is only available in Finnish, but it is liberally illustrated, so it is worth perusing even if you don't understand the text.
Read the report in pdf format