Trevor Smith wrote:
I have a LF&B door in my kitchen and I an going to open up the top
section and fit a double glazed unit in there. What would be the best
way of fitting the glass against the beads, silicone or putty or a
rubber seal.

Firstly, why does it need to be double glazed? - extra weight for no gain.
It must be toughened or laminated glass.

It would be better to use a thin bead of silicone and wooden beading