Evening All,

I have been handed a job to route out a riser cupboard door and fit a intumescent brush seal, however there is an intumescent seal built into the frame. I was led to believe when I did my fire door training that you cannot have both. Is this correct or should I just remove seal in the frame and replace with intumescent brush seal. Look forward to replies.

Either remove and replace or use a separate surface mounted smoke seal, the former being preferred.

On a single leaf door, you should not fit intumescent seals to the door leaf edge where one is already fitted to the door frame.

Image below seal shows options.