Hi, I'm looking to smooth render the front and sides of our house in order to modernise the look (1950s house). The area is currently concrete pebbledash which appears in good condition. I have have a quote from a local builder who is looking to use a cement and sand mix. The area is approx. 55 sq meaures. The current render doesn't have any cracks so hopefully any future movement would be minimal. However, I mentioned hacking off the old render first and he said jet washing over would be fine. In my very limited knowledge I thought you should never render over old render. Grateful for any advice and a rough price (height would only be 4 metre max for any scaffolding) . Thank you.
