permanent ventilation Home › Forums › Ireland › permanent ventilation This topic has 1 reply, 2 voices, and was last updated 15 years, 10 months ago by Anonymous. Viewing 1 reply thread Author Posts June 19, 2009 at 10:23 am #710599 goneillParticipant Are habitable rooms stll required to have permanent (i.e. uncontrollable) ventilation, and if so how much? June 19, 2009 at 11:33 am #807870 AnonymousInactive Have a look at Part F of the building regs (ventilation) as there are certain variables but generally up to 10m2 the opening for backround ventilation is 6500mm2 Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Latest News