Kath

We have a double garage approx 10 Mtrs x 4 Mtrs and a timber kitchen door leads directly Into the garage we wish to build a narrow lobby / store room between the garage and kitchen about 4 Mtrs x 1,80 mtrs we will install a fire door from the new lobby to the garage My question is: what materials should the lobby be made of for our own safety and to Comply? .? Fire retardant plasterboard / board of some type ?