Hi - hoping here that someone can re-affirm what I already think is going on with my walls. Had a builder re-render the outside of stone house in flat finish, as it had painted over pebble-dash on it. Old pebble-dash was to be removed first, however, builder found that there was yet another layer underneath that so, whilst I was out, rendered on top of everything - increasing the weight load considerably for starters. I have since had trouble with damp patches on the internal walls, and large cracks in the external render. I am worried for the structure of the property but the builder says the cracking is due to hot weather when the work was done. I do not believe this for one second. Have written to him several times and he is now shouting down the phone at me (the lady of the house) ending with a comment about seeing me in Court. He is a bit threatening so I have not written again - still wondering what the best course of action is.? I think it all has to come off and be re-done with correct mix. Any advice welcome