Voltcraft ms 10 digital hygrometer voltcraft ms 10 too high a humidity level in homes can cause not only millions worth of damage but is also unhealthy in addition the damage looks unsightly most people think that the dampness comes from outside but that is often not true in reality moisture is caused inside the house by evaporation in the kitchen and bathroom the use of high heat retention building materials greatly reduces air circulation through walls which can only be corrected by