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Writer's pictureScott Carter

Our Guide to Sash Window Security: Tips for a Safer Home

Sash windows are known for their charm and functionality but also offer excellent security when they are adequately equipped. While they are very secure and provide a similar level of protection to other types of windows, there are measures you can take to enhance their security further. This blog will discuss practical strategies to optimise sash window security and what to avoid for maximum protection.



Understanding Sash Window Vulnerabilities


While sash windows are generally secure, certain features may leave them susceptible to break-ins. Common vulnerabilities include outdated hardware, such as a pivot catch or a finger screw catch.


A pivot catch is a small metal latch on the window frame that helps hold the sash in place, allowing it to pivot for ventilation. However, if the pivot catch becomes worn or loose over time, it may not secure the window tightly. This makes it easier for intruders to tamper with, especially if the window is located in a less visible part of your home, where simple tools could be used to force it open.


A finger screw catch is another common feature of sash windows, often used to hold the upper and lower sashes together. These catches are usually screwed into place and tightened by hand, allowing the window to be locked or loosened for ventilation. When these catches lose their grip, they no longer hold the sashes securely, creating a potential weak point in your sash window security. Intruders could use a tool to unscrew or force these catches, gaining access through the loosened sash.


To prevent vulnerabilities in both the pivot catch and finger screw catch, regular maintenance is essential. Ensure that these components are tightly secured and free from rust or damage. Regular use and exposure to the elements can affect the performance of the catches. If they show signs of wear or reduced functionality, upgrading to modern, tamper-proof versions or more secure alternatives like sash locks with integrated vital mechanisms is highly recommended.


As well as locks, investing in robust, high-quality hardware is essential for sash window security. Features such as tamper-resistant hinges and durable handles make it significantly harder for intruders to break in. Additionally, these components are designed to withstand wear and tear, ensuring long-term security.



Photo of locks on a sash window for security

Additional Sash Window Security Features


Enhancing the security of your sash windows goes beyond locks and hinges. By incorporating advanced materials and features, you can create a multi-layered defence system that protects your home more effectively.



Laminated Glass


Laminated glass is an excellent security feature for sash windows, offering one of the most robust defences against break-ins. Unlike standard glass, which shatters upon impact, laminated glass is constructed with a durable vinyl layer that holds the fragments together when broken. This added resistance makes it significantly more difficult for intruders to penetrate.


Beyond enhancing sash window security, laminated glass provides additional benefits. Its soundproofing qualities make it ideal for homes in busy or noisy environments, while its ability to filter harmful UV rays helps protect interiors from fading. This also improves energy efficiency, making laminated glass a practical and versatile choice for any home.



Double Glazing


Double glazing provides an extra layer of security by combining two panes of glass with a layer of gas in between. This construction not only boosts energy efficiency but also makes the window more resistant to force and impact, significantly increasing its security.


Additionally, the insulating layer between the panes helps regulate indoor temperature, reducing energy consumption and lowering utility bills. Double glazing also reduces the likelihood of condensation forming on the windows, which can weaken the window frame over time, ultimately compromising security. For maximum protection, combining laminated glass with double glazing offers optimal sash window security, blending robust resistance to break-ins with enhanced energy efficiency.



Steel Reinforcement


Many modern sash windows are built with steel-reinforced frames, which provide additional strength and durability. Steel reinforcement within the frame increases the window's resistance to forced entry, making it harder for intruders to pry or damage the window structure. The added strength makes it much harder for intruders to force the window open using tools like crowbars or other prying devices. Despite the internal reinforcement, the visual charm of traditional sash windows is preserved, ensuring your home’s aesthetic appeal remains intact.




Security Grilles and Bars: Physical Barriers for Extra Protection


For sash windows positioned in more vulnerable areas, such as ground-floor windows or those near bins, walls, or ledges that could aid intruders, security grilles and bars offer valuable protection. These sturdy physical barriers are highly effective at deterring break-ins while maintaining the aesthetic appeal of your sash windows.


Available in a range of styles and finishes, security grilles can seamlessly complement your home's architecture without being obtrusive. When considering installation, it's crucial to assess the placement of your sash windows, especially those near outdoor structures that could provide leverage. Prioritising these high-risk locations can significantly enhance sash window security.


Photo of a window with fancy metal bars for window security

Maintenance Tips for Optimal Sash Window Security


To ensure your sash windows provide the best security, proper maintenance is essential. Well-maintained windows are less vulnerable to damage and intrusion. For detailed guidance on maintaining your sash windows, check out our blog post Five Top Tips To Maintain Your Wood Sash Windows, which covers key areas like regular cleaning, lubrication, repainting, and more.

By following these maintenance tips, you can help your sash windows stay secure and functional for years to come.




Enhancing the security of your sash windows is crucial for both protecting your home and maintaining its classic charm. By upgrading to modern hardware and incorporating features like laminated glass and double glazing, you can significantly boost your windows' security.

Regular maintenance is vital to keep these upgrades effective. For expert repair, restoration, or further advice on optimising your sash window security, contact us today!


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