The size of the hinge you need will depend on the door's weight, height, and width, as well as the number of hinges required to support the door. For standard 1 3/8-inch interior doors, two 3 1/2-inch hinges are usually sufficient. For exterior doors and heavier interior doors, three 4-inch hinges are recommended.
Location of Butt Hinges on the Door
Certain Western states use as a standard 7″ from the top and 11″ from the bottom. The third hinge should be centered between the top and the bottom hinges.
Typically, you should locate the top hinge about 5 inches from the top and the bottom hinge approximately 10 inches from the bottom. You can position a third hinge equally between the top and bottom hinges. Use a tape measure to ensure accuracy, and mark the positions with a pencil on both the door and the door frame.
Most standard UK internal doors are 35mm thick and the popular choice of hinge is the 76mm x 50mm 2 ball bearing hinge. These hinges are fitted with hidden ball bearings within the knuckle for a smooth operation and long life.
Typical butt hinges are designed to leave an 1⁄8'' reveal when gained into the jamb and door. That spacing should be consistent on the top and latch side.
Hinges range from 3 inches to 6 inches, with 4 inches being the most common. The size of the hinge you need will depend on the door's weight, height, and width, as well as the number of hinges required to support the door. For standard 1 3/8-inch interior doors, two 3 1/2-inch hinges are usually sufficient.
Most homes have a standard sized hinge of 3.5" x 3.5" This measurement is from the bottom edge of the hinge to the top end of the hinge, and then from the outside edge to edge when the hinge is open. Exterior doors usually have a 4" hinge on them, but not always.
What size hinge is needed for a 35mm thick door? You will need a 75mm hinge for a 35mm thick door. A 75mm hinge is the most common amongst internal doors, whilst an external door or a thicker door would require a 45mm hinge.
As strength and security are important, choose a solid construction panelled door at least 40mm thick. Due to their weight, they should be hung on three 100mm brass butt hinges. If they're not already sealed, exteriors doors should be covered with 2 coats of paint, varnish or sealer.
A door hinge is installed so that one-half of the hinge is on the door frame and the other half of the hinge is on the side of the door. Unless the door is pre-hung on an attached doorframe, this is an essential step to hanging a door.
Understanding Standard Door Sizes
The most typical standard door width is 36 inches, paired with a height of 80 inches. However, don't worry if your measurements differ — standard door sizes can range from: Width: 30 to 45 inches.
If you are working on a hollow-core, lightweight door, you can perhaps get away with using only two hinges. However, if you are working with a solid-core or an exterior door, you cannot work with less than three hinges at least.
Follow the simple code of practice to correct hinge specification - if in doubt, seek assistance from the manufacturer. The actual door mass will require increasing by the factor calculated between the door height and the door width. This is calculated by dividing the door height by the door width.
As a rule, use one hinge per every 30 inches of door: Doors up to 60 inches need two hinges. Doors over 60 inches, but not over 90 inches, need three hinges. Doors over 90 inches, but not over 120 inches, need four hinges.
Size: 4"(100 mm), Thickness: 2.9 mm, Max. Load 30 KG. Apply for door thickness: above 3cm.
Place the tape measure parallel to the hinge's side from top to bottom. Using the tape measure, note the hinge's full height. The height will match the width for standard hinges. Most of the hinges are 3 ½ inches, 4 inches, 4 ½ inches, 5 inches, or 6 inches.
75x100mm hinges are suitable for standard internal doors up to 45mm thick, whereas the 100x100mm hinges are the size preferred for thicker external doors up to 55mm.
The most common standard measurement for door hinges are: 3 inch (76mm) - used for internal doors and lightweight external doors. 4 inch (102mm) - used for heavier internal and external doors. 5 inch (127mm) - used for particularly heavy doors such as Fire doors.
The size of hinge you'll need depends on the weight and width of the door or gate. Heavier, wider doors need heavy-duty hinges. Standard residential interior doors need hinges that are about 75mm long. Most fire door hinges will be around 100mm long.
Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom. Hinges may be made of flexible material or moving components.
Installation Tips
There should be a 5" distance between the top of the door and the highest hinge, and 10" from the bottom of the door to the lowest hinge. All hinges in between should be equally spaced from one another. Leave a small gap between the door's frame and the edge of the hinge's leaf.
There is a wide range of sizes to choose from when purchasing hinges. It does not matter if you intend to put the hinges on a door, gate, cabinet, or any other surface; you will need to select hinges that are of the appropriate size. The majority of hinges make use of a few standard measuring formats.