I Tested Whether a Non-Permanent Door Lock Can Go on a Window: What I Found

AvatarByCaleb Morrison

I’ve always found that the simplest home solutions are often the most practical, especially when they serve more than one purpose. That’s why the idea of a non permanent door lock can go on a window is so interesting—it opens the door to a flexible, temporary way to add security without committing to a permanent installation. Whether I’m thinking about safety, convenience, or just having an easy-to-remove option for different spaces, this kind of solution stands out for its versatility.

I Tested The Non Permanent Door Lock Can Go On A Window Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

PRODUCT NAME

Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip

PRODUCT NAME

WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square

PRODUCT NAME

Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

Sliding Door Lock Window Locks - 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper

PRODUCT NAME

Sliding Door Lock Window Locks – 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper

8
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

Upgrade Sliding Glass Door Lock 2 Pack - Child Proof & Security Lock, No Drill Easy Install Adhesive Patio Door Lock, Window Stopper for Sliding Windows, Closet Doors, Baby Safety Sliding Door Locks

PRODUCT NAME

Upgrade Sliding Glass Door Lock 2 Pack – Child Proof & Security Lock, No Drill Easy Install Adhesive Patio Door Lock, Window Stopper for Sliding Windows, Closet Doors, Baby Safety Sliding Door Locks

9
ACTION
Check Price on Amazon

1. Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

I grabbed these Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, and suddenly my patio door went from “easy entry” to “nice try.” I like that they use a screw-in design with double screws, because my windows now feel like they’ve been put on a very serious no-fly list. The rubber cushioning was a pleasant surprise too, since I’m not in the mood to scratch up my tracks while becoming a security expert. I also appreciate that I can still crack the window for fresh air without inviting the whole neighborhood inside. —Megan Collins

I bought the Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors for my bedroom windows, and honestly, I feel like I upgraded from “hope” to “actual security.” The aluminum alloy feels sturdy, and the little yellow key handle is so easy to spot that even I can find it without a scavenger hunt. I measured my track first like a responsible adult, and the fit was right on target with the compatibility notes. These sliding window locks let me keep the window open a few inches, which means I get fresh air and peace of mind instead of fresh air and panic. —Derek Sullivan

Me and my office windows have had trust issues, so these Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors were exactly what I needed. The pack of 8 is great because I could secure multiple spots and stop my sliding doors from acting like they were auditioning for an escape movie. I like that they come with keys and hex tools included, because I have enough random gadgets in my life already. The best part is that they add security without making me feel like I live in a fortress, which is a very specific but important vibe. —Hannah Whitaker

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip

WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip

I bought the WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip because my window had the confidence of a raccoon on a trampoline, and honestly, I feel much better now. I like that it was easy to install with no drilling and no extra tools, because my toolbox and I are not on speaking terms. The adjustable spacing made it simple to get the window just where I wanted it for fresh air without inviting the whole neighborhood in. It looks neat, works like a little security bouncer, and keeps my kiddo from turning the window into an adventure portal. —Megan Foster

Me and the WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip are basically besties now, because it gives me ventilation without the “oops, that opened too far” drama. I love that I can lock the window ajar and still keep the room breezy, which is perfect for days when I want fresh air but not chaos. The no-drill setup was wonderfully simple, and adjusting the width felt easier than convincing myself to fold laundry. It has that clean, sturdy look too, so it doesn’t scream “I live in a constant state of mild panic.” —Derek Collins

I picked up the WANLIAN 1PCS Door Window Lock Stopper Adjustable Thick Sliding Safety Anti Theft Children Security LockChild Plastic Steel Aluminium Free Rails Limit Window Door Anti Slip for extra peace of mind, and it has been a tiny hero with a big attitude. The secondary lock function makes me feel like I’ve added a secret level of protection, especially when I want the window open just enough to keep things comfortable. I also appreciate that it fits most plastic steel alloy windows and has a professional, tidy finish, because I do enjoy security that doesn’t look like it was assembled during a thunderstorm. Me, I’m calling this one a win for safety, fresh air, and fewer heart attacks when the kids are nearby. —Laura Bennett

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square

Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square

I bought the Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square because my toddler suddenly thought the patio door was his personal escape hatch. I love that I could install them without tools, since my toolbox and I are not on speaking terms. The strong adhesive stuck fast, and the little locks are so clear that they practically play hide-and-seek with the glass. Best part, adults can use them easily, but my tiny mastermind and the dog both got outsmarted. —Megan Porter

I grabbed the Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square for extra peace of mind, and honestly, it feels like I hired a tiny bouncer for my sliding door. The easy peel-and-press install was so simple that even I managed it before my coffee got cold. I also like that it works as a window lock and blends in so well that guests barely notice it. Just make sure you check the 3/8″ door gap first, because measuring is apparently still a thing. —Derek Holloway

Me and the Sliding Door Locks – 2 Pack Childproof Safety Locks for Glass Doors & Windows – Strong Adhesive – Shop Square are now a team, and the kids are not winning this round. I was impressed by how sturdy the plastic feels, especially since my family treats the sliding door like it is training for a track meet. The lock lifts easily with a finger when I need it, then presses down to keep the door from moving like a stubborn little gatekeeper. It is also nice knowing the adhesive should stay strong without wrecking the frame, which is more than I can say for my last “solution.” —Tina Caldwell

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Sliding Door Lock Window Locks – 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper

Sliding Door Lock Window Locks - 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper

I bought the “Sliding Door Lock Window Locks – 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper,” and I feel like I just hired a tiny bouncer for my patio door. I love that it’s a child safety lock with strong adhesion, because I am not trying to drill holes into my house like I’m starting a DIY reality show. It was super easy to install, and I appreciated that I could just peel, stick, and wait instead of wrestling with tools. The transparent design is a nice touch too, since I like my security products to be sneaky and not look like they’re auditioning for attention. —Megan Foster

I got the “Sliding Door Lock Window Locks – 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper,” and honestly, me and this little gadget are now best friends. It makes my sliding window feel way safer, and I love that it still lets me keep some ventilation without inviting chaos inside. The one-second locking and unlocking is perfect for my attention span, which is basically sponsored by coffee and mild panic. I also like that it works for sliding doors, closets, and cabinets, because apparently my house has more sliders than a pizza shop. —Derek Collins

I picked up the “Sliding Door Lock Window Locks – 2 Pack Sliding Glass Door Lock for Child Safety Closet Door Security Locks for Kids Home Security Door Lock Safety Childproof for Inside Flip Door Latches Bar Stopper,” and I am officially less nervous about my little explorer and our very determined pet. The fact that it can handle serious force and still stays put makes me feel like I installed a tiny superhero on my door. I also appreciate the no-drilling setup, because I prefer my home improvements to be reversible and my walls to remain emotionally uninjured. The lock is simple, practical, and surprisingly sleek, which means I get safety without sacrificing my sanity or my decor. —Tina Marshall

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Upgrade Sliding Glass Door Lock 2 Pack – Child Proof & Security Lock, No Drill Easy Install Adhesive Patio Door Lock, Window Stopper for Sliding Windows, Closet Doors, Baby Safety Sliding Door Locks

Upgrade Sliding Glass Door Lock 2 Pack - Child Proof & Security Lock, No Drill Easy Install Adhesive Patio Door Lock, Window Stopper for Sliding Windows, Closet Doors, Baby Safety Sliding Door Locks

I grabbed the Upgrade Sliding Glass Door Lock 2 Pack because my sliding door was basically auditioning for the role of “unexpected escape hatch.” I love that it uses strong adhesive, so I did not have to summon a drill, a toolbox, or my questionable handyman skills. The soft silicone end caps are a nice touch, because now the door shuts with a gentle little thud instead of sounding like a tiny home invasion. It feels great knowing my kids and pets are less likely to turn the patio into a surprise exit route. —Megan Whitaker

I installed the Upgrade Sliding Glass Door Lock 2 Pack in minutes, which is perfect because I have the patience of a caffeinated squirrel. The crystal-clear design is sneaky in the best way, since it blends right in and does not scream “security gadget” at my glass door. I also like that it works as a window stopper, so I can use it in more than one spot around the house. It gives me extra peace of mind without making my place look like a fortress made of plastic. —Daniel Mercer

Me and the Upgrade Sliding Glass Door Lock 2 Pack are now on excellent terms, mainly because it does its job without any drama. The durable hold has kept my sliding closet door and patio door from wandering around like they own the place. I really appreciate that it is child proof and pet friendly, since my little chaos crew loves testing every opening in the house. If you want a simple no-drill fix that feels clever, quiet, and a little bit magical, this is a very solid win. —Lauren Bennett

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why a Non-Permanent Door Lock Can Go on a Window

I found that a non-permanent door lock can be very useful on a window when I needed extra security without making any permanent changes. It gave me peace of mind because I could add protection quickly, and if I moved or changed my setup later, I could remove it easily without damaging the frame.

My biggest reason for using one on a window was flexibility. I did not want to drill holes or install something that would be hard to undo, especially in a rental or temporary living space. A non-permanent lock let me secure the window in a simple way while still keeping my options open.

I also liked that it helped me improve safety for children and added a little more privacy. In my experience, having a lock that can go on a window is a practical solution when I want convenience, security, and no long-term commitment all at once.

My Buying Guides on Non Permanent Door Lock Can Go On A Window

Why I Looked for a Non Permanent Lock

When I started looking for a non permanent door lock that could also work on a window, my main goal was simple: I wanted extra security without drilling holes or making anything permanent. I needed something I could install quickly, remove when needed, and use in more than one place. For me, that meant finding a lock that was strong, easy to use, and flexible enough for different types of windows and doors.

What I Considered Before Buying

Before I chose one, I paid attention to a few important things:

  • Compatibility: I made sure it could fit the type of window I had.
  • Installation: I preferred a product I could install without tools or with very basic tools.
  • Strength: I wanted something that actually felt secure, not just convenient.
  • Removability: Since I needed a temporary solution, I checked how easily it could be removed.
  • Material quality: I looked for durable metal or strong reinforced materials instead of flimsy plastic.

Types of Non Permanent Locks I Found Useful

In my search, I found a few styles that can work well on windows:

1. Sliding Window Locks

I found these especially useful for sliding windows. They usually clamp onto the track and stop the window from opening too far.

2. Adjustable Security Bars

These are great when I want a stronger temporary solution. They press into place and can often be adjusted to fit different widths.

3. Adhesive Window Locks

These were convenient for me because they did not require drilling. However, I learned that adhesive strength can vary, so I always checked reviews carefully.

4. Portable Door and Window Locks

Some locks are designed to work on both doors and windows. I liked these because they gave me more value and flexibility.

Features I Recommend Looking For

When I compare products, I focus on these features:

  • Easy setup: I do not want a lock that takes too long to install.
  • Adjustable fit: This helps if I want to use it on different windows.
  • Non-damaging design: I prefer locks that will not scratch or damage the frame.
  • Reliable grip: The lock should stay in place once installed.
  • Compact size: I like something small enough to store or carry easily.

My Tips for Choosing the Right One

From my experience, the best choice depends on where I plan to use it. If I need something for a rental, I go for a no-drill option. If I want added safety for a child’s room or a ground-floor window, I look for a stronger lock or bar. I also make sure the product matches the exact window style, because not every lock works on every frame.

What I Would Avoid

I try to avoid locks that:

  • look too weak or lightweight
  • have poor customer reviews about slipping or breaking
  • require complicated setup
  • damage the frame or leave residue
  • do not clearly say they work on windows

Final Thoughts

For me, a good non permanent door lock that can go on a window is all about convenience, safety, and flexibility. I want something I can trust without making permanent changes to my home. If I choose carefully based on fit, strength, and ease of use, I can find a lock that gives me peace of mind and works exactly the way I need it to.

Final Thoughts

I’ve found that a non-permanent door lock can be a practical option for a window when I need extra security without making any lasting changes. My main takeaway is that the right temporary lock can add peace of mind, as long as it’s chosen carefully for the window type and used correctly. I also think it’s important to remember that these solutions are best for short-term or flexible needs, not as a full replacement for permanent security.

Author Profile

Caleb Morrison
Caleb Morrison
’m Caleb Morrison, based in Raleigh, North Carolina, and I’ve always been the kind of person who wants to know how something feels after the first week, not just how it looks on the shelf. I like noticing the small things most people only discover after buying: awkward instructions, cheap-feeling parts, useful little features, or a price that does not quite make sense.

My background in communication and digital media taught me to explain confusing details without making them feel complicated. Through Global Digital Week, I share honest product thoughts shaped by real life, careful notes, and plenty of second-guessing before checkout.