Hi can you help me. I have a new house which is smooth plastered outside. It was plastered 3 months ago. I have noticed egg shaped cracking has appeared when the wall is wet but when the wall is dry you can not see this. When the cracks appear I tap the walls to see are they bost Happy to say they are not. My plasterer has told me it is drying out hair line cracks. The cracks are not on the outside of plaster if you know what I mean Has anyone come across this or will the cracks come bost in time.