A Complete Guide to Window Lock Types

When it comes to home security, window lock types play a crucial role in protecting your residence. Different types of window security locks provide varying levels of safety, ease of use, and aesthetic appeal. In this guide, we’ll explore the most common types of window locks—whether you're looking for enhanced security or child safety solutions—and help you understand which ones might be installed in your home. This will assist you in filling out your Fortify Form after purchasing your Fortify Plan.

1. Latch/Fastener Lock

Latch locks, also known as fastener locks, are one of the most basic and widely used types of window locks. These locks typically feature a simple mechanism where the latch secures the window to the frame, preventing it from opening.

Key Features:

  • Simple, easy-to-use mechanism.
  • Commonly found on sash windows.
  • Not the most secure option but can be paired with other locks for added security.

Best For: General use, particularly for windows that aren’t primary access points.

2. Restrictor/Safety Lock

Restrictor locks, often referred to as safety window locks, are designed to limit how far a window can open. These locks are perfect for homes with young children, as they prevent windows from opening wide enough for a child to climb through.

Key Features:

  • Limits the window opening to a few inches.
  • Can be released for full opening when needed.
  • Ideal for homes with children or pets to prevent falls.

Best For: Child safety window locks, homes where additional safety precautions are required.

3. Sliding/Bolt Lock

Sliding window locks, also known as bolt locks, are ideal for windows that slide open horizontally. These locks often use a simple bolt or bar to prevent the window from sliding along its track.

Key Features:

  • Secures sliding windows by locking them in place.
  • Easy to install and use.
  • Can be used in combination with other locks for enhanced security.

Best For: Sliding windows, patio doors, or any window that moves horizontally.

4. Mechanical/Handle Lock

Mechanical window locks, often referred to as handle locks, are locks integrated into the window handle. When you close and lock the window, the handle automatically engages the lock, making it easy to secure.

Key Features:

  • Built into the window’s handle for ease of use.
  • Typically found on casement or tilt-and-turn windows.
  • Offers moderate security but can be combined with additional locks for stronger protection.

Best For: Windows that are frequently opened and closed, offering ease of use with built-in locking mechanisms.

5. Keyed Lock

Keyed window locks provide an extra layer of security, as they can only be unlocked with a key. These are a popular choice for people who want to prevent unauthorized opening of windows, particularly ground-floor or basement windows.

Key Features:

  • Requires a key to unlock the window.
  • Offers a higher level of security compared to standard latch locks.
  • Often used in combination with other locks for enhanced protection.

Best For: Ground-floor windows, windows that are vulnerable to break-ins, or homes needing additional security.

6. Electronic/Advanced Lock

Electronic window locks are part of advanced window lock systems that integrate with smart home technology. These locks can be controlled remotely via an app or connected to a home automation system, allowing you to lock or unlock windows from anywhere.

Key Features:

  • Can be controlled via smartphone apps or home automation systems.
  • Offers advanced features like remote locking, monitoring, and alerts.
  • Ideal for smart homes or homeowners seeking high-tech security solutions.

Best For: Smart homes, windows that need to be controlled remotely for convenience and security.

7. Window Does Not Open

In some cases, your window may be fixed and doesn’t open at all. While these windows don’t require locks, it’s important to note this in your Fortify Form as it impacts how your security system is configured.

Key Features:

  • No moving parts, offering natural security due to the inability to open.
  • Often found in areas where ventilation isn’t needed, such as large decorative windows.

Best For: Rooms where windows are solely for light or aesthetics, and there is no need for ventilation.