On 21 Jan, 22:26, wrote:
What's the best way of concealing the join/hinge lines?

I'd prefer to grout the joins to keep them hidden, but will grout just
fall out with a bit of movement? With hinges I'd be a bit concerned
that the panel wouldn't be totally secure and the grout around the
edge of the panel would come loose.

Also, is there some way of stopping the grout sticking to one side of
the grout line?

Or is it best to seal the panel with sealant and put up with having to
cut it to open the panel?

Yep, usually seal and cut open. I did that around the panel that gives
me access to my bath plumbing. Would be a bit of a pain, but probably
the best option if it needs to waterproof etc.
Simon.