I wonder if anyone out there knows what materials to use when sealing a doorway that used to have a fire door fitted?
Especially what plasterboard to use and whether there should be a sealant between the old and new plasterboard to stop smoke getting through in the event of a fire.
The doorway is from a ground floor kitchen to a hallway with stairs leading up to the 1st and 2nd floors in my Townhouse. I want to skim over the plasterboard to finish so want to make sure any sealants will accept the plaster afterwards.
Thanks for your time and help.