Your Door Hinge Replacement Guide

Your Door Hinge Replacement Guide

Hinges are an integral part of a door’s function and can make or break a door's ability to open and close sufficiently. Whether your door hinges have worn down over time or have broken entirely, here’s everything you need to know about replacing them. 

What Are Hinges Used For?

Hinges in general are used to join two parts together, forming a revolute joint between them, while still allowing the two parts to rotate relative to each other. Typically, they have two flat faces (known as leaves) and are available in a variety of different styles depending on their purpose and the type of door they’re being fitted to. Steel, stainless steel or brass are the most common metals for door hinges, and they not only provide support to the door, but also enable it to open and close adequately. 

What Are The Different Types Of Hinges?

Door hinges are available in a wide range of styles, from hinges that are suitable for exterior doors, to those that are best for interior doors. Spring Action hinges are designed for doors that open both ways, whereas Parliament Wide Leaf hinges are suitable for doors that open wider than normal. While door hinges are available in a variety of finishes, most people opt for a finish that suits the door’s handles and general style. 

Do You Need 3 Hinges on A Door?

While lightweight internal domestic doors may be fitted with only two hinges, security or external doors generally require three hinges in order to make them more secure and harder to be forced open. As a general rule, you should use one hinge for every 30 inches of door. For instance, a door over 90 inches tall (but not over 120 inches) would require four hinges. 

What Is the Correct Position For Door Hinges?

In most circumstances, the top hinge of a door should be installed 5 inches down from the top jamb / edge of the door (the jamb is the flat surface that runs vertically up either side of the door frame and is where the hinges are placed to hang the door). The bottom hinge is generally installed 10 inches up from the bottom edge of the finished floor, with the third centred between the other two hinges. 

How To Measure A Hinge 

First, you need to know both the thickness and the width of the door before knowing the appropriate hinge size to use. Here’s a rough guide to work with: 

Thickness

Width

Hinge Size

1-3/8" Door

Up To 32"

3-1/2" Hinge

1-3/8" Door

32" to 36"

4" Hinge

1-3/4" Door

Up to 36"

4-1/2" Hinge

1-3/4" Door

36" to 48"

5" Hinge

1-3/4" Door

Over 48"

6" Hinge

2", 2-1/4", 2-1/2" Door

Up to 42"

5" Heavy Duty Commercial

2", 2-1/4", 2-1/2" Door

Over 42"

6" Heavy Duty Commercial

How To Replace Door Hinges

Step 1: 

First, open the door so that the hinge is fully exposed before placing either sturdy door stops or blocks of wood under the door to keep it sturdy and steady. 

Step 2:

Now is a good time to not only check that your new door hinges match both the size and edge shape of the old ones, but also that the old hinges are in the correct place on the door. 

Step 3:

You’ll now need to remove the old hinges. Starting at the upper hinge, remove the screws that hold the hinge leaves in place, pulling them away from both the door and the jamb. It’s a good idea to double check the wood underneath the hinge at this point to ensure it’s in good condition. If the holes have stripped out, you may wish to plug them with a small wedge of wood. 

Step 4: 

If the hinges you’re replacing are particularly old and worn, the jamb and the door itself may need a bit of TLC before you fit the new hinges. If necessary, sand down the wood and give it a fresh coat of paint. If the replacement door hinges are different in size from the old ones, you’ll also need to fill in the mortise hole in the door and the door frame with wood putty – allow plenty of time to fully dry before painting or staining the door. 

Step 5:

Next, you need to place the new hinge gently and carefully over the position of the old one. Using a screwdriver or drill, secure the two sides of the hinge to both the jamb and the door with the screws, securing the hinge by placing a hinge pin into it.

Step 6:

Repeat this process for the second/lower hinge (and third if needed). 

Step 7:

It’s now time to remove the blocks or doorstops from beneath the door and test the new hinges. Open and close the door several times to ensure it does so smoothly and with ease. 

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