I need some help (Maybe a lot of help). I have recently decorated a room with a good quality undercoat/paint. In the corner of the room, there was substantial crack running down the wall which I refilled/sanded. I have done the same with the cracks running along the coving/ceiling. Unfortunately both of them have come back just as bad. Can anyone tell me how to eradicate this once and for all. I have the issue in some of the other rooms, but I would like to fix this room first.
Here are the pictures:
The corner is made up of an external brick wall joined to an internal wall with the crack running from floor to ceiling.
Any ideas on how to get rid of these cracks for good? I have had a look at Ronseal and wonder if fibreglass tape is any good?