Guest Tina Posted July 3, 2023 Report Share Posted July 3, 2023 Hi, If rising butts have been installed to a front door should a new door be required. The top edge has been chamfered a lot so gaps can be seen. Also no fire seals have not been installed & we have been told the construction of the door is tubular chipboard (as this can be seen from the cut out of the letterbox )& won’t be easy installing the seals. The doors were installed in the 80’s & have no info on them. Quote Link to comment Share on other sites More sharing options...
Neil Ashdown MAFDI Posted July 6, 2023 Report Share Posted July 6, 2023 When changing from rising butt hinges to fire rated butt hinges the chamfer on the top edge of the timber-based fire door will need to be removed and and a suitable hardwood lipping fitted to the top edge to provide for the correct gap with the door frame head. Suitable adhesive should be used to fix the lipping. The fire and smoke rated letter-box should be one that is suited to a fire door with a tubecore chipboard core, some are not. A tubecore door will have timber stiles, top rail and bottom rail with hardwood lipping to the vertical edges, so if these are intact it will be possible to groove the top and vertical edges to fit fire seals. Don't forget smoke seals too. Having said all of that, tubecore fire doors are not best suited to use for flat entrance doors and you may wish to consider replacing it with a complete purpose-made fire door-set. Quote Link to comment Share on other sites More sharing options...
Guest Tina Posted July 6, 2023 Report Share Posted July 6, 2023 Thank you for your reply. What is the maximum thickness of lipping I can put on the door? Quote Link to comment Share on other sites More sharing options...
Neil Ashdown MAFDI Posted July 11, 2023 Report Share Posted July 11, 2023 Whilst there are no specific regulations in this regard, it would be usual to consult the product certification data sheet for the door. In the absence of such certification best practice would be to use hardwood of minimum 640 kg per cubic metre density, 6mm minimum thickness and 18mm maximum with the work carried out to a joinery-works standard and using urea formaldehyde based adhesive. Quote Link to comment Share on other sites More sharing options...
PAUL THE JOINER Posted July 11, 2023 Report Share Posted July 11, 2023 Hi Tina, the frame of the door will also require a deeper rebate to be fitted eg, by planting on a hardwood strip on the outside edge of the door where it touches the door, i would also be checking to the sides of the frames that there is no gap behind the arcitrave, seen door frames with gaps here between frame and brickwork. Also the yale lock will need to be removed if fitted and hole filled as will the large key operated mortice lock and refitted with a euro type lock and key and a thumb turn on the inside. So much easier to replace the door and frame , but more costlier. Quote Link to comment Share on other sites More sharing options...
PAUL THE JOINER Posted July 12, 2023 Report Share Posted July 12, 2023 "Hi Tina, the frame of the door will also require a deeper rebate to be fitted eg, by planting on a hardwood strip on the outside edge of the door where it touches the door," Sorry should read Hi Tina, the frame of the door will also require a deeper rebate to be fitted eg, by planting on a hardwood strip on the outside edge of the REBATE where it touches the door, Quote Link to comment Share on other sites More sharing options...
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