Doors up to 60 inches need 2 hinges.
Number of door hinges per door.
It is important to consider the weight of the door including additional weights such as handles.
In our experience the following number of hinges has been proven and tested.
Doors up to 60 need two hinges.
The door height also affects the number of hinges required.
To calculate your door weight multiply the size of your door in square feet times the number in the chart above pounds per square feet.
As a general rule you will want to use one hinge per every 30 of door or fraction thereof.
However more hinges may be required per chart below.
Doors over 90 inches but not over 120 inches 4 hinges are recommended.
Every door should be provided with at least one hinge for every 30 inches in height or portion thereof.
For high and narrow doors for example it may be wise to use three hinges for extra stability even though with a weight of 6 kg this is not strictly.
Doors 60 90 need three hinges.
2 hinges are optimal for door weights of 4 6 kg.
3 hinges are optimal for door weights of 6 12 kg.
For example if you have a 1 3 4 thick door that is 8 0 by 3 2 and made out of oak you would calculate the square inches of the door 96 x 38 3648.
Directions after determining the weight and width of the door draw a straight line through the door width and weight to.
Referring to door height.
The result is your door weight in pounds.
For example a 90 door needs three hinges and a 91 door needs four.
Referring to door height.
Doors 90 120 need four hinges.
Number of hinges per door as a general rule you will want to use 1 hinge per every 30 of door or fraction thereof.