Hi we have a Victorian end terrace house. There is an extension on the back so bricks don't match & an owner before us has painted the side wall. We would like to render the side of the house to tie the finish all together. Additionally we are having an extension on the side to build a utility room. Having read information online I'm not sure what type of render would be best. I was thinking monocouche but a guy who came to quote said sand & cement is better. Can someone advise me please? Thanks in advance.