Aug 07, 2025
Friction hinges might be small in scale, but in modern window systems, they carry more technical weight than ever. Here’s how to avoid making common mistakes in hinge specification and system installation.
For fabricators working to tight timelines and even tighter margins, it's easy to overlook critical factors that impact long-term performance and compliance. From Part B to Part F, your choice of hinge doesn’t operate in isolation; it defines how well your whole window system performs.
Titon Adventure friction hinge
What is a friction hinge?
A friction hinge is a precision-engineered mechanical device used in side- or top-hung windows to control sash movement while maintaining the desired position without the need for additional support. It incorporates an adjustable resistance mechanism to allow smooth operation, positional stability, and secure closure.
But a friction hinge shouldn’t be considered in isolation or as a passive component in a window system; instead, it should be seen and treated as a performance enabler. When specified correctly, it’s part of connected fabrication that supports structural stability, regulatory compliance, as well as occupant safety and comfort.
Here are five issues we frequently see on projects, and what you can do to avoid them
5 common friction hinge specification and installation mistakes
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❌ Don’t... |
✅ Do... |
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Use a “close enough” hinge on oversized or heavy sashes Underspecifying can cause dropped sashes or uncontrolled closure. |
Match hinges precisely to sash geometry and weight Especially critical for triple-glazed or wide sashes. Top-hung types must be matched to load. |
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Assume vents alone guarantee acoustic performance Hinges that misalign or allow air leakage can weaken acoustic ratings. |
Use hinges that align precisely and seal properly Ensures that acoustic-rated vents perform to specification. |
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Use a standard hinge where an egress hinge is needed Failing to specify correctly can breach Part B or restrict emergency escape. |
Specify Titon-tested egress hinges Ensure suitability for fire escape and safety-compliant applications. |
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Skip post-installation adjustment Uncalibrated hinges may allow sashes to slam shut or drift open in light wind. |
Adjust hinge resistance post-install Set correct friction to hold sash position and prevent wind damage. |
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Use unverified hinges in security-rated windows Incompatible components risk PAS 24 failure. |
Use hinges tested as part of PAS 24 window systems Ensure compatibility with espagnolettes and enhanced security devices. |
5 common friction hinge mistakes: a deeper look
1. Misjudging the relationship between sash load and hinge type
It’s surprisingly common to see friction hinges installed on sashes that exceed the hinge’s intended load-bearing range, especially on wider, triple-glazed, or non-standard windows. This isn’t just a durability concern — it can lead to poor operation, dropped sashes, and unwanted callbacks.
Hinges need to be matched precisely to the sash geometry and window use case. A one-size-fits-all approach doesn’t work and risks undermining both thermal performance and structural integrity under Part A.
2. Overlooking the impact of hinges on acoustic performance
With the rise of developments in busy urban zones and near transport corridors, acoustic performance has become a front-line concern. While the focus is often on the vents themselves, the hinge plays a surprisingly important role in maintaining acoustic integrity.
Poor hinge alignment or inconsistent friction can result in unintentional gaps, weakening the overall attenuation effect. Whether you’re specifying basic vents or high-spec combinations, bear in mind that even the best vent won’t perform as expected if the window doesn’t close evenly or stay sealed under pressure.
3. Neglecting safety and restriction requirements in high-risk environments
In sectors like education and multi-residential housing, hinges often need to serve more than just a mechanical function — they must also contribute to occupant safety. Using a standard hinge where a restrictor or egress hinge is required can breach regulatory obligations under Part B or compromise child safety.
4. Assuming post-installation adjustment is optional
Once installed, hinges are rarely touched again but this shouldn’t be the case. Titon provides comprehensive maintenance guides to help maximise the life of Titon friction hinges.
5. Overlooking the hinge’s role in PAS 24 security performance
Friction hinges are not just about usability — they’re integral to your window’s security performance. Under PAS 24 testing, windows must withstand a series of physical attacks, including mechanical loading and manipulation.
Even well-built hinges can fail PAS 24 tests if they aren't installed as part of a fully certified system. For this reason, it’s essential to specify friction hinges that have been tested and validated as part of a complete PAS 24-compliant window system — not just standalone components.
Insecure fixings, poor alignment, or the use of low-spec fasteners can all lead to hinge failure under load. Similarly, the choice of espagnolette must support reinforced locking points to ensure system integrity.
A system-led mindset: where hinges, vents, and compliance meet
The quality of the friction hinges you use shouldn’t be an afterthought — it should be specified as part of a carefully balanced system. The way a window opens, seals, restricts, or resists external noise is the combined result of profile design, vent choice, hinge specification, and espagnolette selection. Each of these elements plays a critical role in ensuring smooth operation, effective sealing, and reliable security.
Whether you're developing a new product line or reviewing your PAS 24 strategy, Titon’s technical team can help. Get tailored advice and fully tested hardware packages — including friction hinges, espagnolette options, and vents — all designed to perform as one.
👉 Contact us today to start the conversation.