Our houses receive about 30 liters of water per day, depending on lifestyle and the number of people in the home.
| Example | litres/day |
| 4 people Clothes Drying Indoors Plants and Pets Floor Washing Cooking (3 meals) Dishwashing Uncovered earth crawlspace Drying and Burning Firewood/cord New Construction Drying (18 months) |
5 1.2 4-5 1 1 0.5 40-50 5 4 - 5 |
Moisture can come from unsealed
basements, through leaks but also from occupants through their
daily living. Perspiration, breathing, bathing, washing,
etc.
The more people, the more moisture. The more cooking, the more moisture. You can see that it can add up to a lot of water each day. This water needs to be flushed out of the house, otherwise things get "wet" or damp which can lead to mould and/or rot. Managing moisture in buildings is very important - if there is a lot of moisture in our houses we have to figure out how we can get some of it out. That is where ventilation comes into play.