Hi all hope anyone out there can help me. On my bedroom wall (exterior) I have clear water marks running down the wall almost like it is under the paint. (My bathroom is about 6-7m away from this wall and we did have lots of rain over the last couple of months.) And there are no visible marks or anything on the ceiling or any of the other walls. Oh and I have a corrugated roof that is/was waterproofed. Donít know what to do to get rid of this!!?? Hope this is enough information for someone to help me.