How Many Hinges On A Fire Door

Because of the weight of a fire door and to prevent it warping fire doors are usually fitted with three fire door hinges.

How many hinges on a fire door.

It s code in most areas that the entry door to an attached garage be fire rated and have self closing hinges. Fire door assemblies are required to have an adequate quantity of hinges as specified in the standard. Doors over 60 inches tall are required to have one additional hinge for each additional 30 inches of door height or fraction thereof. Doors 60 90 need three hinges.

You can get away with two hinges on a light hollow core door but will need at least three on solid core or exterior doors. A door up to 60 inches in height must have two hinges. For doors over 2200mm tall then four hinges can be used to prevent warping. Fire rated doors require at least two spring hinges to meet most building codes unless a separate door closer is used.

Doors up to 60 need two hinges. Fire regulations require fire doors to be fitted with 3 hinges which must be 4 inch fire certified hinges. Referring to door height. The manufacturer may in very exceptional circumstances suggest only two hinges may be suitable.

As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof. Fire doors will have automatic closing devices fire door closers fitted. If you are using multiple spring hinges on a single door adjust each hinge. This is to prevent the door warping in use or in a fire preventing the door closing properly.

Doors with a security function need to have at least 3 hinges as this makes them more difficult to force. But don t worry making this door self closing is as simple as changing two or three of the door s hinges or installing a door closer at the top of the door. Spring loaded self closing hinges and concealed perko door closers with chains might also be in evidence. As a general rule you will want to use one hinge per every 30 of door or fraction thereof.

Do all trimming and fitting on the door before marking your hinge. Doors up to 60 inches need 2 hinges.