Doing my own loft conversion and about to break through the ceiling to install new stairs. New floor joists are all flying above current ceiling joists and don't touch them. Question is, when I cut the existing ceiling joists to chop out the hole, how do I secure them? Do I just screw trimmer battens into the cut ends around where I chop them? Or is there a 'proper' way to secure the opening? Have attached a basic diagram of what I mean. Black lines are existing ceiling joists. Blue lines are stairs, red lines are where I will cut, and green lines are proposed 'trimmer' joists / battens.
Thanks in advance.
Thanks in advance.