rendered skim

Damp coming through into house just bought house. Don’t know how to tackle the rendering but it’s a disaster. What’s easier and cheaper chipping it all away and reporting bricks with lime mortar or re render can I repair the render instead and render the bits that’s came off? I really...

Rendered and skimmed wall, vinyl paint. What is the vest prep? It doesn't seem like a good surface to tile, maybe a good scoring with el diablo or a plasterers roughing out saw? Maybe bolster the skim off? What's the usual way to proceed? Thank you Dain