Guest Peter Posted August 23, 2022 Report Share Posted August 23, 2022 What is the best option to do on a smoke seal fire door when the threshold gap is 5mm. The doors in question are hospital corridor doors & the doors are from the 90’s & the company have gone bust so unable to speak to the manufacturer. External DDS would just get damaged. Any ideas would be much appreciated as the door survey we had done picked up on it. Quote Link to comment Share on other sites More sharing options...
Neil ashdown Posted August 24, 2022 Report Share Posted August 24, 2022 I would advise that a floor survey be carried out to ensure it is suitably level for a concealed automatic threshold drop-seal to be fitted. Quote Link to comment Share on other sites More sharing options...
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