ABSTRACT
Approved Document F1-Table 1 recommends that sanitary accommodation shall have a window, skylight or other similar means of ventilation which opens directly into the external air and of which the area capable of being opened is not less than one twentieth of the fl oor area; OR
Approved Document F1-Table 2 states that mechanical means of ventilation which effects not less than three changes of air per hour and discharges directly into the external air. Note: The ventilation may be intermittent but should run for at least 15 minutes after the use of the room or space stops.
