Steve Blakemore Posted September 1, 2019 Report Share Posted September 1, 2019 Hi being relatively new to door inspections I have come across numerous doors that have a Cold Smoke and Fire Seal fitted but the gap is less than 3 mm especially on the hinge side. Is this still acceptable as the brushes do seem a little squashed? Thanks Steve Quote Link to comment Share on other sites More sharing options...
Paul Sansom Posted September 2, 2019 Report Share Posted September 2, 2019 Steve Generally, no less than 2mm is recommended and is usually stated on certification and assessments etc. The reason for this is that any less than 2mm can affect the operation of the door and can affect the intumescent performing correctly in the event of a fire. I hope this helps Paul Sansom ~If you have any more questions don't hesitate to contact me Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted September 2, 2019 Report Share Posted September 2, 2019 If the gap is a min of 2mm and not in excess of 4mm then it meets the guidance. Quote Link to comment Share on other sites More sharing options...
Steve Blakemore Posted September 4, 2019 Author Report Share Posted September 4, 2019 Great that's a big help thanks both Quote Link to comment Share on other sites More sharing options...
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