Historic Environment Scotland tells us that data gathered and analysed in Scotland’s Climate Trends Handbook indicates that since the 1960s average precipitation has increased by 27 per cent, and in north and west Scotland winter precipitation has increased by over 70 per cent (Climate change adaptation for traditional buildings, Short Guide 11). This is one of the reasons why it is important to control humidity in our homes. Keeping your home’s humidity levels right will not only lower you heating bills but also improve your health.