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How To Install a Door Knob: Your Complete Guide

man demonstrating how to install a door knob

Installing a new door knob can breathe fresh life into your home and enhance security. As your trusted hardware store, we're here to guide you through the process of how to install a door knob. Whether you're replacing an old knob or fitting one on a new door, this comprehensive guide will walk you through each step.

Preparing For Installation

Before you begin, gather the necessary tools:

  • Screwdriver (flathead and Phillips)
  • Tape measure
  • Chisel
  • Hammer
  • Drill (optional)

Choosing a Door Knob

Ensure you have the correct door knob for your door's thickness and the appropriate latch size. When selecting a door knob, consider the door's function, your home's style, and the finish that complements your decor. Evaluate factors like durability, ease of use, and whether you need privacy locks for certain rooms.

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Discover our patented extensible sliding door knobs—elegant, functional, and easy to install. Perfect for design-forward homes, these brass or steel handles offer privacy without compromising style. Upgrade your interior doors today!

For Swinging Doors


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For swinging doors, we offer door knobs similar to Quadra Italian door knobs. It has a modern design and can add a minimalist look to your interiors.

For Sliding Doors


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For sliding and/or pocket doors, we have door handles like our Oval shaped handle. They are practical and have a classic look that will blend in perfectly with your stylish interiors. Upgrade your interior doors today!

Step-By-Step: How To Install a Door Knob

1. Remove The Old Door Knob

If replacing an existing knob, start by removing the old one:

  • Unscrew the screws on the interior side of the door
  • Pull apart the two halves of the knob
  • Remove the latch mechanism from the door edge

2. Prepare The Door

For a new installation, you'll need to create holes for the knob and latch:

  • Mark the center of the door edge, typically 36 inches from the floor
  • Drill a hole for the latch mechanism
  • Create a hole through the door for the knob spindle

3. Install The Latch

Now it's time to install the new latch:

  • Insert the latch into the door edge
  • Ensure the beveled side of the latch faces the direction the door closes
  • Secure the latch plate with screws

4. Attach The Door Knob

Here's how to install a door knob properly:

  • Insert the exterior knob's spindle through the latch
  • Align the interior knob with the spindle
  • Secure both sides with the provided screws

5. Install The Strike Plate

The strike plate on the door jamb is crucial for proper function:

  • Position the strike plate on the door frame
  • Mark and chisel out a recess if necessary
  • Secure the strike plate with screws

Troubleshooting Common Issues

man demonstrating how to install a door knob

Even when you know how to install a door knob, you might still encounter some challenges:

  • Misaligned latch: Adjust the strike plate or latch position
  • Loose knob: Tighten all screws securely
  • Sticking latch: Lubricate or adjust the latch mechanism

Tips For a Smooth Installation

To ensure you install your door knob correctly:

  • Always check the manufacturer's instructions
  • Use the correct size screws to avoid damaging the door
  • Test the knob's function before fully tightening all screws

Installing Door Knobs On Commercial Doors

Commercial doors often require special considerations when installing door knobs:

  • Ensure compliance with local building codes
  • Consider using heavy-duty hardware for high-traffic areas
  • Install additional security features like deadbolts if necessary

Maintaining Your New Door Knob

Now that you've learned how to install a door knob, let’s look at proper maintenance steps to extend its life:

  • Regularly tighten loose screws
  • Clean and lubricate moving parts annually
  • Address any issues promptly to prevent further damage

When To Seek Professional Help

While knowing how to install a door knob is valuable, some situations may require professional assistance:

  • Complex security systems
  • Custom or antique doors
  • If you're unsure about any step in the process

Upgrade Your Home With Milcasa's Premium Door Knobs

Looking to upgrade your interior doors? Learning how to install a door knob is a simple and effective way to enhance both the functionality and style of your home. At Milcasa we offer a wide range of high-quality door knobs crafted from premium materials to ensure durability and long-lasting performance.

In addition to our exceptional door knobs, Milcasa also provides a comprehensive selection of other door hardware products to elevate your home's interior. Our catalog includes:

With Milcasa's extensive catalog, you'll find the perfect door hardware to complement your décor. Upgrade your home with confidence—choose Milcasa for exceptional quality, style, and durability.

FAQs

How do I know if my door is thick enough for a standard doorknob?

Most standard door handles are designed for doors 1 3/8" to 1 3/4" thick. Measure your door's thickness to determine if you need a special knob for thicker doors.

What's the best way to align the screw holes when installing a new door knob?

The best way to ensure proper alignment is to use the template provided by the manufacturer. If no template is available, carefully mark the center of the door edge and use a level to ensure the knob is straight on both sides.

Do I need to repaint my door after installing a new knob?

If you're replacing an existing knob with one of the same size, repainting shouldn't be necessary. However, if you're creating new holes or enlarging existing ones, you may need to touch up the paint around the new installation.

How do I know which side of the door to install the handle on?

The door handle typically goes on the outside of a push door and the inside of a pull door. For interior doors, the knob usually goes on the room side, not the closet or hallway side.

Can I install a deadbolt at the same time as my doorknob?

Yes, many homeowners choose to install a deadbolt for added security. Ensure you purchase a compatible deadbolt and follow the manufacturer's instructions for proper installation.

What's the difference between a mortise lock and a regular doorknob?

A mortise lock is set into a pocket (mortise) in the door edge, while a regular door knob typically uses a cylindrical latch mechanism. Mortise locks often provide more security but require more complex installation.

How do I ensure the latch aligns properly with the strike plate?

After installing the latch, gently close the door and mark where the latch meets the door frame. This is where you'll install the strike plate. Proper alignment ensures smooth operation and security.

What if the screw holes don't match my new door knob?

If the new screw holes don't match the old ones, you may need to fill the old holes with wood filler, sand smooth, and paint before drilling new holes. Always use the screws provided with your new knob for proper fit and stability.

How long does it typically take to install a door knob?

For an experienced DIY-er, installing a door knob usually takes about 30 minutes to an hour. However, if you're new to this type of project, set aside a couple of hours to ensure you have ample time.

What should I do if my door is too thin for the new knob?

If your door is thinner than standard, you may need to purchase a thin door adapter kit or search for a knob specifically designed for thin doors.

Remember, if you're unsure about any aspect of doorknob installation, don't hesitate to reach out to us. Our knowledgeable staff can help you find the right products and provide guidance on your specific installation needs.

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