What Are The Types Of Window Locks? Everything You Need To Know About Window Locks

types of window locks

A familiar scene in TV shows and movies involves an intruder crawling out a window that isn’t locked or is easy to open and stealing objects or causing harm to the occupants. Even if you haven’t been a victim yourself, you probably know someone who has. The safety of a home is crucial. Putting in place automated security systems is a great way to help protect your family, but remembering the basics can ensure that your home is secure and safe. While considering security options for your home, you have several possibilities for window locks.

Types Of Window Locks

Putting a key in a lock

Window locks of this type require a key to operate. Single-hung double-hung and sliding windows work well with it, as it is mounted on the window frame or sash. If you choose this type of window lock, be sure to keep track of the key.

Installing window latches

You’re probably familiar with window latches. Window latches are found on the top of window sashes and close by connecting the two pieces. Double and single-hung windows can be fitted with these. Latch mechanisms are easily operated by turning the handle on the latch.

Locks for sliding windows

An opening of a sliding window is prevented using these locks. There are two types of this lock: levers and thumbscrews. You turn it to lock or unlock the window in a lever-style sliding window lock. When the safety uses a thumbscrew, you twist the wingnut to prevent the window from opening. There are some sliding windows with keys as well.

Locks with vents

The window frame is equipped with a ventilating lock above the sash. The window is attached to a moveable pin that prevents it from fully opening when it is placed above the window. It can be fully opened by removing the pin.

Wedge-Hinge locks

When a double-hung window is closed, it cannot be opened by a hinged wedge lock. If installed directly above the sash, the lock can prevent a closed window from opening. The safety must be pushed inward for the window to open fully. The window will only be partially open if the security is placed higher on the window frame unless it is inward to extend it further.

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Locking pins

A locking pin is placed in one sash and the other to prevent intruders from opening a double-hung window. Chains are often used to attach the hook to the window frame.

Lag screws window lock

If you need double-hung windows, lag screws are a cheap option. After drilling holes in the window sash, the screws can be installed with recessed washers. A unique key is required for tightening the screws. The windows can be locked when partially ajar with this option.

Swivel Action window Locks

Self-locking catches prevent windows from opening with these locks. These work well with most double-hung windows and don’t require a key. Turning the snib from left to proper releases a window that has a swivel action lock.

Devices for controlling the opening of windows

Provide an excellent method of ensuring the safety of children. Devices that limit the opening of windows protect children from falling through windows by ensuring that windows won’t open too far. Window openings should be limited to four inches by a WOCD (Windows opening controlling devices). Several window types are available, including casing, single-hung, double-hung, and horizontal sliding windows. Before purchasing it, make sure that a window opening control device meets ASTM F2090-10 standards. Codes like this one are designed to ensure that children under five do not fall out of windows. A WOCD can only be disengaged by two independent actions, preventing accidental release.

If you disengage, it is unnecessary to reengage the WOCD to open the window entirely. Once closed, the WOCD will rejoin automatically. WOCDs (Windows opening controlling devices) that you purchase aftermarket should meet the standards and be installed properly. The purpose of screens is not to protect against a fall but to prevent insects and provide ventilation rather than prevent children from falling. Small children are at risk of falling when not wearing a WOCD.

Secure your home with smart locks

Electronic locks that require no keys are intelligent. You can instead open smart locks with your smartphone or a code. Using this technology, you can share your code with friends, family, and others who need access to your house. Most smart locks are found on front and back doors, but window sensors exist. You can monitor your home’s safety by knowing whether your windows are locked or unlocked, closed or open, thanks to sensors.

Grades of locks

Having learned about the different types of locks, it’s essential to understand the differences in quality. The Builders Hardware Manufacturers Association uses an American National Standards Institute-certified grading system to determine a lock’s strength.

Grade 1:

Secure locks are awarded the highest grade. The most expensive, they are also the safest.

Grade 2:

 Intermediate security, these locks are commonly used to secure homes.

Grade 3:

Basic security, these locks are generally used to secure homes. In addition to a more robust safety, these locks provide essential protection. This is also the least expensive option available.

How do sliding window locks function?

Due to their construction, these locks may only be used with sliding patio doors and windows. It is a long, sturdy lock positioned on the side track and keeps the window or door from opening. All you need to do to open a sliding window or door is remove the lock from the channel.


When purchasing new windows, inquire about the lock options. If you buy aftermarket locks, you risk selecting the wrong lock for your window type or installing it incorrectly. For the best protection of your home and family, you should consult a professional before purchasing aftermarket locks.


  • How do you describe a window lock?

With a latch. Locks for double-hung and single-hung windows are called window latches. The mechanism prevents either of the windows from being moved by connecting the two sashes of the window.

  • Is it necessary to lock windows?

If you have many windows, you may wonder whether they all need locks. As a rule of thumb, it’s always a good idea to install window locks on windows on the first floor or on windows large enough for a person to fit through. To protect these vital windows, locks must at least be installed.

  • Should windows be locked?

Many people wonder if they should lock their windows. Installing window locks on the first floor or on windows large enough for a person to fit through is always a good idea. At the very least, these window locks should be installed.