Last Updated Dec 3, 2010 · Written by Jaclyn Fitzgerald
For a healthy bathroom, you need good ventilation. Here are our handy ventilation tips.
When it comes to bathroom ventilation, the best option is definitely natural ventilation – that is, simply opening a window. Just by doing this, you will be doing a lot to keep your bathroom dry and fresh. To get the most from your bathroom window, install a kind that opens from the top as these allow the steam to escape the most efficiently.
As well as air, you also need natural light as part of your bathroom ventilation. Natural light helps to dry out the bathroom but it also helps to stop mould and mildew from growing, as they cannot stand ultraviolet light.
If you need to use an exhaust fan in the bathroom, you need to make sure that you get the right one. The fan needs to be able to change the air in the room at least ten times an hour. To find out the right size fan for you, simply multiply, the length, width, and height of the bathroom to get its volume in cubic metres, and then multiply by ten. This will give you the air flow range in cubic metres.
Options in exhaust fans include wall mounted or ceiling mounted fans. Some ceiling mounted fans come as a light, fan, and heater combination which are perfect for smaller bathrooms. However, if you opt for a ceiling mounted fan, it needs to vent to the outside of the home, and not just into the roof space. Moist air in the roof space can damage timber and insulation.
Also make sure that there is adequate space underneath the door for the fan to pull air in.
See bathroom renovations for more information about this topic.