Hi, Could someone please advise me of best practice with the repair to some fire doors. I’m an accredited third party installer and have been sent a job to replace some lipping. The doors look to be leaderflush as the hinges are labelled but no actual label on the door set. Someone has cut the groove for the seals but have over recessed them and done a poor job. They are double doors but they have cut seals opposite each other on both leaves. As I have no information/ test evidence I’m reluctant to replace lipping and install x2 seals opposite each other. Would a new door set be required?

We would always repair where possible.  We have some Leaderflush certification data sheets and installation guide that may include configuration for intumescent seals at meeting edges. If of interest you can contact me via www.firedoorscomplete.com