How to Install a Peep Hole


In an age where security is paramount and convenience is key, a simple yet effective addition to your home can make a significant difference. The peep hole, also known as a door viewer, offers you the ability to see who’s at your door without compromising your safety. This article will guide you through the process of installing a peep hole, ensuring that you can make your home more secure and maintain your peace of mind.

Things You Need to Know Before Installing peep hole

So, you’re ready to take your home security to the next level with a peephole, huh? It’s a terrific idea, but before you dive in, let’s take a moment to round up a few key points. Here are the things you need to know before installing a peephole: 

  • Peephole Types: Did you know there are different types of peepholes? Yes indeed! There are standard peepholes, digital peepholes, and wide-angle peepholes. We’ll delve into each of these later on.
  • Door Material: The material of your door plays a crucial role in the installation process. Whether it’s wood, fiberglass, or metal, you’ll need to adjust your approach accordingly.
  • Door Thickness: ‘One size fits all’ doesn’t apply to peepholes. The thickness of your door can impact the type of peephole you should install, so measure it before purchasing your peephole.
  • Tools Required: You’re going to need some basic DIY tools: a drill, a hole saw, a screwdriver, and maybe a bit of elbow grease!
  • Installation Height: Consider everyone in your household when deciding on the installation height. It should be easily accessible to all. Remember, this isn’t just for you, it’s for everyone’s safety.
See also  How To Install Ring Doorbell Wired Without Existing Doorbell

The Benefits of a Peep Hole

Ever found yourself racing to the door, only to open it and find a salesperson on a mission to make you switch your cable provider? Or perhaps, a mysterious stranger who leaves you feeling uneasy? This is where a peephole comes in handy. It’s your personal previewer, giving you a sneak peek of who’s knocking without compromising your safety or privacy. 

  • Security: A peephole allows you to identify visitors before opening the door, reducing the risk of unwanted encounters or potential threats.
  • Privacy: It eliminates the need to open the door to strangers, keeping your personal space undisturbed.
  • Control: You decide when and to whom you want to open your door, giving you a sense of control over your environment.

Tools and Materials You’ll Need

Gather Your Tools

Before you begin, ensure that you have the necessary tools and materials for the installation process. Here’s a list of what you’ll need:

  1. Tape measure
  2. Pencil
  3. Power drill
  4. Hole saw bit (usually 1/2 inch to 2/3 inch)
  5. Screwdriver
  6. Peep hole kit (consisting of a viewer, lens, and screws)
  7. Masking tape (optional, to prevent splintering)

Step-by-Step Installation Guide

Choose the Ideal Location

Selecting the right location for your peep hole is crucial. It should be at a height that allows both children and adults to comfortably use it. The viewer should also be positioned to provide a clear view of the area outside your door.

Measure and Mark

Using a tape measure and pencil, mark the center point of where you want to install the peep hole. This mark will serve as a guide for the hole saw bit during the drilling process.

Secure the Door

To prevent splintering and damage to the door’s surface, consider applying masking tape around the area you marked. This step is particularly important if your door is made of wood or has a delicate finish.

Drill the Hole

Carefully drill a hole using the hole saw bit at the marked center point. Start drilling slowly and steadily, maintaining a perpendicular angle to the door’s surface. Apply gentle pressure and avoid excessive force, which could lead to splintering.

See also  How to Install a Water Heater Expansion Tank

Insert the Viewer

Once the hole is drilled, insert the peep hole viewer from the exterior side of the door. Ensure that the lens is positioned correctly to provide a clear and unobstructed view.

Secure the Viewer

From the interior side of the door, attach the peep hole lens using the provided screws. Make sure the lens is securely in place to prevent any wobbling or misalignment.

Test and Adjust

After securing the lens, test the peep hole by looking through it from both sides of the door. Check if the view is clear and adjust the lens if necessary. Tighten any screws that may have come loose during the installation process.

Additional Tips and Considerations


Let’s talk about maintaining your peephole. After all, a peephole is only as good as its clarity and functionality. Here’s the lowdown— it’s simple, quick, and requires minimal tools. 


  • Regularly clean the lens with a soft cloth to remove dust and dirt.
  • Avoid using harsh chemicals or abrasive materials that could scratch or damage the lens.

Checking For Damage 

  1. Inspect the peephole regularly for any signs of wear and tear, such as cracks or discoloration.
  2. If you spot any damage, it’s probably best to replace the unit. Fortunately, swapping out a peephole is a breeze.

Dealing With Condensation 

Notice some fogging? This could be due to condensation, especially during colder months. Here’s a simple trick: 

1Remove the lens carefully.
2Wipe the inside with a dry cloth.
3Use a hairdryer on a low setting to gently dry the inside.
4Re-install the lens.

It’s as easy as that. Maintaining your peephole can be as simple as regular cleaning, damage inspections, and condensation control. So keep an eye on it, and it’ll keep an eye out for you!

Door Compatibility

Before purchasing a peep hole kit, ensure that your door’s thickness is compatible with the kit’s specifications. Some kits may come with adjustable fittings to accommodate various door thicknesses.

See also  How to Install a Heat Pump


Consider the lighting conditions outside your door. If the area is poorly lit, you might want to install a peep hole with a built-in light source to ensure a clear view, even in low light.

Privacy Cover

Some peep hole kits come with privacy covers that allow you to block the view from outside. This feature can be particularly useful if you want to maintain privacy when not using the peep hole.

What are some common mistakes to avoid when installing a peephole?

If you’re prepped and ready to enhance the security of your home by installing a peephole, kudos to you! But before you grab that drill, let’s chat about some common mishaps you’ll want to sidestep. Avoiding these will ensure a hassle-free installation and a perfectly functional peephole. 

  • Incorrect placement: One of the most frequent mistakes is installing the peephole either too high or too low. Remember, the peephole should be conveniently positioned for all users.
  • Inadequate drill bit size: Using a drill bit size that’s too large or too small can ruin your door and the peephole. Ensure that the drill bit size matches the peephole’s size.
  • Not considering door thickness: Peepholes come in different lengths to accommodate varying door thicknesses. Ignoring this can lead to a peephole that doesn’t fit properly.
  • Ignoring privacy cover: A peephole is all about security, yes? Not investing in a privacy cover can leave your home vulnerable to reverse peephole viewers.
  • Skipping the user manual: Yes, it might seem like a no-brainer task, but referring to the user manual can prevent many installation mishaps.


Installing a peep hole is a straightforward yet impactful way to enhance your home’s security and convenience. By following the step-by-step guide outlined in this article, you can confidently add this valuable feature to your door. The benefits of improved security, convenience, and deterrence make the installation process well worth the effort. Take the initiative to make your home safer and more secure by installing a peep hole today.

How useful was this post?

Click on a star to rate it!

Average rating 0 / 5. Vote count: 0

No votes so far! Be the first to rate this post.

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top