Take a look around some of the finest properties in the UK and you’ll find numerous
examples of sash windows.
Combining timeless elegance and style, these windows have been a classic feature of
homes across the country since the 1600s, with the Georgians, Edwardians and Victorians
fully embracing the style. You can also find plenty of examples in modern housebuilding
too.
Both traditional and modern sash windows can be fitted with modern security features to
make them safe and suitable for modern living, without needing to compromise on the
authentic heritage design.
In this article we’ll take a look at the key security features of sash windows, exploring
practical and effective upgrades to keep them safe, secure and stylish.
Modern Security Upgrades for Sash Windows
Reinforced Window Locks
These are a crucial element of your sash window security, providing discreet but effective
protection against forced entry. There are two main types to consider – sash stops/
restrictors and key-operated sash window fasteners.
- Sash window security stops / restrictors are a security and safety measure that
stop the window opening beyond a set point, providing safety for upper floors and
security for the ground floor. They allow you to open your sash window a small
amount for ventilation whilst keeping your property safe. - Sash window fasteners are key-operated locks installed at the meeting rail,
securing both sashes together and preventing tampering.
Reinforced locks offer a discreet and effective layer of security. These fittings are easy to
operate, require minimal maintenance and fit effortlessly into both heritage and modern
settings.
Toughened & Laminated Glass

Toughened and laminated glass can be used within a single or double-glazed unit.
Heat-treated to increase its strength, toughened glass is far more resistant to impact than
standard glass, and when broken, shatters into small fragments, reducing the risk of injury.
Laminated glass consists of multiple layers bonded with a tough interlayer. Even when
cracked, the glass remains intact, forming a barrier that’s difficult to penetrate. This makes
it ideal for ground-floor or accessible windows where security is paramount.
Double-glazed laminated glass is also more thermally and sound efficient than standard
counterparts, helping reduce heat loss and external noise without compromising on safety
or style.
Window Alarms & Sensors
Blending modern tech with the timeless elegance of sash windows, wireless alarms and
smart security integrations are available for that added peace of mind.
Using discreet sensors that don’t compromise the look of your windows, these systems can
detect unauthorised opening and alert you to any suspicious activity. Whether retrofitted to
existing sash windows or included as part of a full upgrade, this use of modern technology
preserves the charm of your windows whilst offering up-to-date security.
Sash window security on New Build properties

New build properties need to meet Part Q / PAS24 regulations for security. Part Q is the
mandatory legal requirement within Building Regulations that sets the minimum security
standards for new builds.
PAS24 is the Publicly Available Specification that defines the rigorous testing methods and
criteria products must pass to demonstrate compliance with Part Q security requirements.
Essentially, these two work together to ensure any new windows meet expected security
requirements, ensuring the safety of the building’s occupants, which includes:
- Laminated security glass on accessible floors: Multi-layered glass that stays intact
when broken, helping prevent forced entry and reducing the risk of glass shattering. - Part Q compliant high security hardware: Timbawood offers an extensive range of
finishes and styles for window hardware, using the highest quality suppliers. Find
out more here. - Specific frame sizes, section dimensions and glazing thickness: Frames must meet
minimum thickness and structural criteria, ensuring strength without compromising
traditional design.
Ensuring that all security elements of your sash window are compliant with Part Q provides
greater safety and security for your property, in line with legal standards and crucially
compliant with the criteria set by many insurers.
Knowing your sash window elements are Part Q compliant gives you the peace of mind
that they have been rigorously tested against high standards of safety, meeting all legal
requirements.
Conclusion
Sash windows are timeless, making them a hugely popular choice for anyone wanting to
add elegance and style to their property. With modern security measures that meet
industry and building standards, and discreet security options for heritage windows, there
are a range of options available that are safe, stylish and secure.
For any property with sash windows, upgrades to safety and security are a worthwhile
investment.
Timbawood – Experts in Sash Window Security
As a bespoke manufacturer, our experienced team at Timbawood can offer a range of
services to improve the security of your sash windows that will suit the requirements of
your property, keeping your property safe and protected for years to come.
Talk to one of our sash window specialists today for more information on tailored solutions
for your property.





