Hi, Im looking to convert half of my detached garage into a study. I have confirmed with local Building Control and the Planning department that I do not require planning permission or building regs as it conforms with permitted development. Even so I want to build to regulations completely. Im happy with the procedure for insulating, ventilating, electrics and DPM for floor and walls but what im not sure about is Fire Regs in relation to partition between new room and garage space and the ceiling, do I need to use fire rated (pink) plasterboard or not? I imagine not for the ceiling as there is no room above due to it being a detached garage.