The lantern is being repaired at RT Carpentry workshop.

Dismantled lantern frame at RT Workshop

Work is proceeding to repair the fame of the lantern and the
window panels.  Rotten wood is being removed and the remaining sound
wood either filled or a new piece of wood scarfed in.  Only as a last
resort is a complete member being replaced.  Where necessary the joints
of each panel are being re-glued.  A crucial part of the lantern, the
sill around the base, is extensively rotted and is being replaced with a
new sill shaped to the same section as the original sill.