S60tsy I think you are right. There is no damp. We checked this morning with a pronged device & it registered no damp at all. It looks like the clear silicone used to stick the trims to the wall has had a reaction & is producing a grease that's tracking across the wall.
Once we got the...
Hi, no none whatsoever. The frame and all the little trims are completely dry. The wetness on the plaster appears to be seeping through from behind the little internal trims.
Please can someone help? The day after we had a new composite door installed, having removed a timber door & frame, water has appeared all around the internal plaster wall. The silicone seals are sound all around the external frame and there is no condensation on the door or in the room...