Joiner

[Guest Stephen ohagan]

Do internal doors in a flat ( not including the entrance door )still have to be fire doors if the building is deemed as a stay put. 

[AnthonyB]

Yes, generally to the standard of the day, which can be 20 minute fire check to selected doors, through all doors other than bathrooms being FD20 no intumescent seals and ending in FD30 doors with seals (sometimes standing in for a FD20 door)