Security is one of the most important things to consider when replacing the windows in your home. While appearance and energy efficiency often receive plenty of attention, your windows also form an important part of the physical security of your property.
Modern uPVC windows are very different from many of the older plastic windows still fitted to UK homes. Improvements in frame construction, glazing, locking hardware, hinges and manufacturing standards mean today’s windows can be specified with security firmly in mind.
However, simply describing a window as “uPVC” doesn’t tell you how secure it is.
The security of a finished window depends on several components working together, along with the quality of the installation.
Here’s what homeowners should understand when comparing modern uPVC windows.
What Makes a uPVC Window Secure?
A secure window isn’t created by one particular component.
The frame, glazing, locking system, hinges, handles, reinforcement and installation can all contribute to the security of the finished window.
This is why it is important to consider the complete specification rather than concentrating solely on the brand of profile or type of glass.
At Haven Windows and Doors, our uPVC windows are professionally installed using established REHAU profile systems, with different styles and configurations available for homes throughout Central Scotland.
Modern Window Frames
The frame provides the structure around which the rest of the window is built.
Modern uPVC window profiles aren’t simply solid pieces of plastic. They are engineered profile systems containing internal chambers and areas designed to accommodate other components.
REHAU’s TOTAL70 system, for example, incorporates a reinforcement chamber that allows galvanised steel reinforcement to be added where required by the window specification.
Reinforcement can provide additional rigidity and strength to the window.
If you want to understand more about how the profile itself is constructed, read our guide to REHAU TOTAL70 windows.
Multi-Point Window Locks
Modern uPVC windows can use locking mechanisms that secure the opening sash at multiple points around the frame.
Rather than relying on one simple locking point, the mechanism can engage at several positions when the window is closed and locked.
The exact locking hardware used will depend on the window manufacturer, style and specification.
This is why you shouldn’t assume that every uPVC window uses exactly the same security hardware.
When comparing replacement windows, ask what locking system is included in the actual windows being quoted.
What Is PAS 24?
PAS 24 is an important term you may encounter when researching secure windows and doors.
It is a UK security standard used to assess the enhanced security performance of doors and windows.
Products are subjected to testing designed to assess their ability to resist methods of attack.
The important point for homeowners is that PAS 24 relates to the performance of the complete doorset or window rather than simply one individual component.
Haven installs windows manufactured using REHAU systems which, when correctly specified, can achieve PAS 24 enhanced security.
That provides homeowners with a recognised standard to look for when security is an important consideration.
What Is Secured by Design?
Another term you may encounter is Secured by Design.
Secured by Design is a police-backed initiative that works with manufacturers and recognised standards to improve the security of buildings and products.
It is different from simply saying that a window has a strong lock.
Products seeking relevant Secured by Design recognition must satisfy applicable security requirements.
When discussing replacement windows, ask your installer about the exact security specification being offered rather than assuming every configuration automatically carries the same approvals.
Does the Glass Affect Window Security?
Yes. The glazing unit is another important part of the complete window.
A modern window consists of much more than the visible frame, and different glazing specifications are available depending on the requirements of the property.
Glass can vary in thickness, construction and type.
Certain locations may also require safety glazing to comply with applicable building requirements.
The important thing from a security perspective is to consider the glazing as part of the complete window system.
A strong frame with inappropriate glazing wouldn’t provide the same overall specification as a window where the frame, glass and hardware have been selected to work together.
Are Window Handles Important?
The handle is the part of the locking system that homeowners interact with every day.
Depending on the window specification, lockable handles and different hardware options may be available.
However, the visible handle is only one part of the mechanism.
Much of the actual locking hardware is located around or inside the opening sash, which is why you cannot accurately judge the security of a window simply by looking at its handle.
The condition of the handle also matters on existing windows.
If a handle has become loose, damaged or difficult to operate, it is worth having the window inspected.
What About Window Hinges?
Hinges are another component that can easily be overlooked.
They allow the opening sash to move while keeping it correctly positioned within the frame.
As with locks and handles, hinge design and specification can vary between windows.
Older or damaged hinges can also affect how effectively a window closes against its seals.
If an existing window no longer sits correctly in the frame or is difficult to close, the cause should be investigated.
It doesn’t automatically mean the whole window needs replacing, but a window that cannot close correctly shouldn’t simply be ignored.
Installation Matters Too
Even a well-designed window needs to be installed correctly.
Accurate measurement, appropriate fixing, alignment and finishing all contribute to the performance of the completed installation.
A replacement window isn’t simply placed into the opening and sealed around the edges.
It needs to be correctly positioned and securely installed according to the requirements of the window and property.
Professional installation also helps ensure opening sections operate correctly and locking mechanisms engage as intended.
At Haven Windows and Doors, we professionally measure and install our range of windows throughout Central Scotland.
Are Older uPVC Windows Less Secure?
Not necessarily, simply because of their age.
The actual condition and specification of the window matter more than an arbitrary number of years.
However, older windows can develop problems.
Handles and locks may wear, hinges can deteriorate, glazing units can fail and frames can become damaged or distorted.
You may notice that a window has become difficult to close or that the locking mechanism no longer engages smoothly.
These are signs that the window should be assessed.
Some faults can be repaired by replacing individual components, while more extensive deterioration may make complete replacement worth considering.
Our guide to when you should replace your windows covers the common warning signs in more detail.
Should You Leave Windows Open for Ventilation?
Ventilation is important, but leaving accessible windows wide open can obviously affect the security of your home.
Modern homes need appropriate ventilation to help manage moisture and indoor air quality, but security and ventilation should be considered together.
Depending on the property and window specification, different ventilation arrangements may be available.
The best solution depends on the room, property and applicable ventilation requirements.
What Window Style Is Most Secure?
There isn’t one window style that is automatically the most secure in every situation.
Casement, tilt and turn, flush casement, sliding sash and other window designs can all have different hardware and security specifications.
Instead of choosing solely by style, look at the security performance of the actual window configuration being offered.
Haven supplies several window styles, including casement, tilt and turn, sliding sash, bay, bow and flush casement windows.
The right choice will depend on the appearance of your property, how you want the window to operate, ventilation requirements and the specification you need.
Windows Are Only One Part of Home Security
Windows are important, but they aren’t the only potential access point into a property.
External doors should receive the same consideration.
Frames, locks, glazing, cylinders, hinges and installation can all affect the security performance of a door.
If you’re replacing both windows and doors, it makes sense to consider the property as a whole rather than upgrading one area while overlooking another.
You can explore Haven’s range of uPVC, composite and aluminium doors alongside our window options.
What Should You Ask Before Buying New Windows?
Don’t be afraid to ask what you’re actually getting.
Ask about the security standard of the complete window, the locking hardware, glazing specification and whether reinforcement is incorporated where required.
You should also understand who will be installing the windows and what guarantee is provided.
Security claims should relate to the actual product and specification being supplied rather than vague statements about uPVC windows in general.
Choosing Secure uPVC Windows for Your Home
Modern uPVC windows can provide a strong combination of security, thermal performance, low maintenance and design flexibility when correctly specified and professionally installed.
The important thing is to look beyond the frame material alone.
A secure window is a complete system involving the profile, reinforcement where required, glazing, locks, hinges, handles and installation.
At Haven Windows and Doors, we install high-quality windows and doors across Central Scotland using trusted systems and professional installation.
If you’re considering replacing your existing windows, get in touch with Haven Windows and Doors to arrange a free, no-obligation survey and discuss the options available for your home.
