General Information

Butt Hinges are designed to provide an effective method or swinging doors where there is a need for high grade commercial quality hinges.

In selecting hinges there are a few variables which must be considered and guidelines to be observed. To determine hinge selection for individual doors, it is recommended that the guidelines contained in this catalogue are to be adhered.

When reading dimensions, the first figure always indicates length and the second indicates the width. Eg 100 x 75.

 

Hinge Length

The appropriate hinge length for any job is dependent upon the door width, thickness and weight. The length of the hinge is the length of the flap, not including the tips of the pin, as shown in the diagram to the right.

 

Hinge Width

The door thickness and door jamb width (also trim size if applicable) determine the width of the hinge required. The width is measured across the leaves when the hinge is fully opened as shown in figure 1.

 

Hinges Per Door

For most doors, two hinges will suffice, however, it is recommended that three hinges should be installed on doors with closers, doors likely to receive heavy abuse or slamming and/or external doors where the probability of warping is a consideration.

If in doubt, it is advisable to install the higher number of recommended hinges to ensure job quality.

 

Hinge Selection

The following reckoner will be most useful in selecting the correct hinge type. Simply identify the dimensions of the door to be installed and read off the recommended hinge selection. Variations to this reckoner will need to be made only in unusual circumstances on specific jobs or according to personal preferences.

The reckoner is intended as a guide only and as such is not meant to be exhaustive or any more than a rule of thumb for particular application.

 

Residential

Light narrow butt hinges are satisfactory for this application on external or internal doors.

 

Commercial

Heavy duty road butt hinges are recommended for commercial applications, particularly on high traffic doors. Ball bearing hinges should be used on heavy doors. These can generally be classified as aluminium or steel glazed doors, solid core timber doors and fire doors. Ball bearing hinges should also be used on doors fitted with closers or automatic door operating equipment.

 

Security

Loose pin hinges should never be used on exterior doors or doors opening out. Also doors made of particle board should never be screwed directly into the edge of the board. These doors should have a capped tongue edge strip framing the door.

 

Ordering

A standard method of ordering has been established. This required the specification of hinge series (catalogue number), screw type (where applicable), Hinge height for all narrow butt hinges and hinge width for all other broad butt types, as well as hinge finish.

Please refer to individual ordering data for each item.