Posted By Jonathan Compton
Hi Andy,

The building regulations state quite clearly requirements for fire doors and other emergency stystems. there is a whole section on fire doors, I think it's schedule B, but don't quote me on that.

Hope that's what you're looking for...

Jon

Posted By Paul Woodard
Every manufacturer of fire door will have a test carried out on their doors mounted within a door frame. The door frame may be hardwood or softwood, the door stops may be a specific size and they may be screw fixed at certain centres. The fire door may also have a particular brand and type of smoke seal.
The door will then be tested to destruction within this particular set-up and the fire rating will be determined and certified.
Now in order to achieve the fire rating of the door it is important the specification of the ancillary items meets or exceeds the set up at which it was tested.
eg. if a fire door was certified as 1 hour FR in a hardwood door frame you would not be able to assume that it will achieve 1 hour FR in a softwood door frame.
Similalry your fire doors would not have been tested with holes in them so you can safely assume they will not achieve their anticipated FR. I would personally try and determine if you could satisfactorily repair the hole with some intumescent filler to avoid the expense of replacement. Following the implementation of the RRO it is upto you to determine if the risk is acceptable.