Just had people around looking at our house and insualting the cavity. They want to use an insulation that contains silicone and therefre doesn’t track water back to the internal leaf – quite how true this is I haven’t looked into it yet.
Rising damp is a bit of an excuse passed off by many people in the past but most of the time is a crap dew point in the build, por ventilation or crap detailing during construction phase ie window reveals