Greetings.
My loft hatch is right at the top of the stairs, and so for safety, I intend to open a new hatch further along the landing. I am OK with supporting, cutting out and reinstating the joist in the loft, but need advice regarding cutting the lath and plaster ceiling to give a reasonable clean line, and without bringing chunks down all around. I know architrave will cover minor rough edges, but to make it more complicated, the ceiling is covered in artex so I want to avoid having to reinstate as much as possible.
All advice gratefully received.