Thanks for your reply and help. Sounds slightly more complex for me than filling! I shall take a look though as I want it to be done properly and hold (fingers crossed!) this time.
Corner.jpg I live in a seven year old flat and along one wall where it joins to the main building, a crack always appears. I filled it in before with some Polly filler but it opened again. I did it again after this picture was taken using builders caulk which has worked for most of it, but I will n...