Guest EddieMCK Posted February 4, 2017 Report Share Posted February 4, 2017 Hi, A contractor has installed a 20mm wide groove in the door frame head for the intumescent smoke seal, whilst on the jambs it's only 10mm. We only require a 30 minute fire rating so I thought 10mm was acceptable on jambs and head. However they have said new regulation state that doors over 2040mm high must have a 20mm wide groove? Is this correct? Many thanks, Eddie Quote Link to comment Share on other sites More sharing options...
AnthonyB Posted February 4, 2017 Report Share Posted February 4, 2017 The only reference to seal width I can find is purely based on door fire resistance and nothing to do with size. The recommended seal size for most modern 30 minute doors, other than doorsets, is 15mm X 4mm. The recommended seal size for most modern 60 minute fire doors is 20mm X 4mm, or 2 No. 10mmX4mm. This is from BWF-CERTIFIRE who are the fire door industries' Scheme to ensure the correct standards are used in relation to fire doors and their installation Quote Link to comment Share on other sites More sharing options...
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