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Neil Ashdown MAFDI

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Posts posted by Neil Ashdown MAFDI

  1. The document Hardware for Fire & Escape Doors available at  http://firecode.org.uk/Code_of_Practice_hardware_for_fire_and_escape_doors.pdf    contains some very useful information about hinges including Critical Recommendations at section 2.2. The information therein should enable you to decide an appropriate course of action. 

    For metal faced timber-based fire resisting doors it will be necessary to consult the technical manual for the 'specific fire door leaf' to find out what is permitted in terms of fire resistance performance. eg  image.png.1d5a4a5910fb444fd5460355948bbf66.png

  2. The recommendation is 2mm to 4mm.  More than 4mm could be an issue affecting the restricted spread of smoke and potentially premature failure of the door in a fire.  Less than 2mm could mean that the door fails to self-close and latch correctly (eg. due to binding on a smoke seal), therefore inspect each door to make sure any tight gaps do not affect the ability of the door to self-close completely. 

  3. If the finger guard manufacturer cannot provide this, it is likely that the reason is that in the event of a fire they would burn quickly and fall away from the door assembly.  Thus not affecting the fire integrity performance of the door when these are fitted to the fire risk side.

    On the non-fire risk side, the inherent insulating characteristics of the timber door should mean that the plastic-based finger guards will not be affected. 

  4. Without identification of the glazing, in terms of the gaskets and the door leaf in the case of the MDF frame its difficult to answer your questions. 

    Are there any marks on the glass that could be used to identify the product?  Also are there any stencil marks on the top edge of the door?  Begin there to try and trace the products to the relevant installation data sheets, failing that you could engage an experienced and knowledgeable fire door inspector for consultancy. 

    Alternatively, a suitably experienced fire risk assessor may be able to provide 'risk-based' advice. 

  5. On the basis that there is still part of the integral garage present (but smaller than it used to be), then the separating wall needs to be suitably fire rated and if there's a door in that wall it should be minimum FD30(s) self-closing. Refer to Approved Document B of the Building Regulations in England. https://www.gov.uk/government/publications/fire-safety-approved-document-b 

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