Does anyone know what the guidelines for hanging a kitchen fire door actually are?

Answer 1

tech boy's answer is great, but on a fire door you MUST fit 3 hinges (if using butt hinges) that have appropriate fire rating. (many hinges don't!!)

the door MUST have a self closing device THAT LATCHES THE DOOR SECURELY INTO THE FRAME. i'm yet to see spring hinges that do this effectively.

best practice is to fit an overhead door closer, with a fire test certificate. this is obvious to see for a building/fire inspector and avoids the need to cut out large chunks of the door (or frame) that concealed closers need, thereby preserving the integrity of the door. they're also cheaper!

speak to a builders'/joinery merchant.

Answer 2

The width of the rough opening should be equal to the width of the door plus 2", and the height of the rough opening is 82". The door itself should be solid core, either 1⅜" or 1¾" thick. If you buy a prehung door it will save a lot of trouble.

Start hanging the door by shimming the jamb with the hinges to make it plumb. Then adjust the gap along the top so that it is uniform. Finally, adjust the gap on the doorknob side for the thickness of a nickel. Check how the door swings, and how it hits the door stop. The door should not be sticking out from the door frame. Adjust the door stop as necessary.

Foam between the door jamb and the framing after it is hung. Then install casing on both sides, using ³/₁₆" reveal. Now install a threshold at the bottom of the door. It should be the type that the door strikes against to get a seal.

The door should be self-closing. There are special hinges you can buy that can be set with a tension that will close the door. Normally only two hinges are used, top and bottom, but
I've found that you get better closure with three hinges. Instead of special hinges, you could use a closing mechanism that mounts on the top of the door.

Answer 3

in Britain the rules are ..for a normal house hold .any type of door .but if you have done a loft conversion then the kitchen door must become a half hour fire check door and the door stops must be upgraded to one inch thick..this law is coming in in April this year under the old law you had to upgrade the door stops ..but did not force you to have a fire check door ..but it did make you fit a door closer .under the new law the door closer will no longer have to be fitted ..this rule applies to all doors in house ..except bathroom where there are no regs