Fire Doors with Aluminum frames

[Guest Daniel]

Dear Sirs,

I was looking for some advice on Fire Doors with metal frames and the required compliance. A building I recently visited had several timber fire doors with metal frames and only 2 hinges (ASSA EN-1935 11). My first thoughts was that they needed to have three grade 13 fire rated hinges and the two hinges would be insufficient. Are you aware of any different specifications/requirements for metal frames? Would it have been compliant at the time of installation? There appears to be very little information available on the internet on timer doors with metal frames. Installing an additional hinge may not be possible and the whole frame may have to be replaced.

Any experience and advice you have on this matter would be greatly appreciated. 

[Neil ashdown]

There are timber based FD30 doors with fire performance test evidence when installed into metallic frames. You need to get hold of the door leaf manufacturer with regard to frame, hinge and intumescent seal requirements etc.

[Guest Daniel]

Thank you for your reply. There is no information available reference the door leaf manufacturer. They are fairly old doors and I'd imagine have been in situ for approximately 15-20 years. To ensure current compliance we are thinking replacing the linings with a compliant timber version and installing three GR13 hinges is the only option we have. 

[Neil ashdown]

But the fire door may be suitable for use in a metal frame. What evidence is there that it isn't?

Do the doors carry any markings at all, on the top edge or hanging edge perhaps?

Edited October 27, 2019 by Neil ashdown
Typing error