I have coving in my living room of a particular style that I cannot find
anywhere. I want to add a new section of wall and re-create the coving
around that section. I have considered removing all the coving and
replacing it with something off the shelf but I think this would be too much
work as it's a large room.

This leaves me with 2 options as I understand it:

a) create a wooden profile of the coving and attempt to re-create in-situ
using plaster that's sculpted using the wooden profile.

b) create a mould and use this to cast the new coving using some form of
light-weight plaster.


My question is, both of these seem like they would be very tricky, and I'm
sceptical that the result wouldn't look too good.

Does anybody have any experience of doing such a thing in the past? I would
be grateful of some advice, particularly with regards to the materials that
I should use?


Many thanks
Brett