fix bedroom ceiling cracks by blocking loft joist?

[tellme_why]

Hi,

50+ old house first floor bed show cracks in the ceiling (see also picture attached).

I plan to remove the woodchip paper, skim and paint and wish to avoid that the cracks coming back.

The ceiling joist are not loaded by any weight, just loft insulation, but wondering whether I could prevent movements simply by screwing some floorboards on top of the joists where the crack is (currently it's all covered with 150mm rockwool)?

Thanks in advance for any feedback.

 

[Wayners]

If you're get up in loft look the other side.
Find joints in plasterboard.
Cut 60mm ish wide plasterboard and stick over plasterboard joints.
You can use board adhesive or cove adhesive to stick plasterboard on.
Fill joints.
All becomes one