> Reinforced concrete buildings have better thermal and sound isolation. Thermal conductivity of materials are telling different story [1]. Polystyrene or mine

> Reinforced concrete buildings have better thermal and sound isolation. Thermal conductivity of materials are telling different story [1]. Polystyrene or mineral wool are good for insulation because they have low thermal conductivity 0.032 - 0.038 W/mK (these values are not exact obviously, you can also find mineral wool with values 0.033 not 0.038 but that is just detail). Timber here is 0.14 - 0.17 W/mK. We can find also concrete with 0.16 which is pretty low for concrete but unfortunately that is just aerated concrete which is different from more dense - reinforced one. So for example in my home country (in central/eastern Europe) where we have Soviet apartment blocks and decide to insulate them we need to cover them with 30cm thick layer of mineral wool or polystyrene foam in order to meet current standards for thermal resistance. Most of them are already insulated at least decade now (unfortunately with just 10-20cm thin layer). [1] https://www.designingbuildings.co.uk/wiki/Thermal_conductivity https://www.designingbuildings.co.uk/wiki/Thermal_conductivi...