Hi everyone   I'm stuck with my construction method and insulation... Please can you help me with the pros and cons? I'm getting a lot of mixed reports from the things I'm reading and the people I'm speaking to!   Background:  I have just bought a 1950s house in Hertfordshire, cavity wall construction, completely uninsulated. It's in pretty good condition structurally, but hasn't been touched since it was built.   Project: I will be completely renovating and moderni