The repair of the lantern frame and the panels that hold the
glass, currently taking place at RT Carpentry workshop, is nearing
completion. To ensure the parts fit together properly the lantern has
been temporarily re-assembled at the workshop. The photo shows the
lantern partially assembled. The darker wood is the original and the
light wood is replacement. After ensuring everything fits correctly the
parts will be primed and and returned to the BNSS for re-installation.
The support post and the lantern base sill were very rotten and have now been replaced. The original post comprised three different pieces of timber and each had to be individually fabricated and put together on site. The base sill was partly rotten so only the part affected was replaced. The base sill had a complex profile which had to be replicated before being cut to size and attached to the remaining base sill. Each of the corner joints were reinforced with a stainless steel bolt diagonally across the joint.
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.
With the approval of the Heritage Officer at Bournemouth Borough Council the panels and frame of the glazed part of the lantern have now been carefully dismantled and removed to RT Carpentry workshop for repair. A more extensive scaffold lid is currently being placed over the roof to enable work to start on exposing the rain water gully around the base of the lantern.