> I the problem in the UK is humidity is quite high most of the time and most houses don't have HVAC and there seems to be a complete lack of knowledge around v

> I the problem in the UK is humidity is quite high most of the time and most houses don't have HVAC and there seems to be a complete lack of knowledge around ventilation Mandating (whole house) dehumidifiers in building codes may help with that if air tightness is also mandated.