On paper, mixing and matching different window hardware from various suppliers might seem like a smart idea. You get to choose components you like, save money and spread risk. But in practice, this approach can create more problems than it solves.Mismatched hardware doesn’t just cause a few headaches — it can quietly add serious costs to your project, from the workshop floor to the building inspector’s checklist. Let’s break down what really happens when window and door hardware components aren’t working ‘as one’:
1. What can go wrong when hardware is specified and sourced from multiple suppliers?
Issues don’t always show up in the spec. They tend to reveal themselves at the worst possible time — during fabrication, on-site, or post-install.
If you’ve specified different pieces of hardware from different manufacturers, you’re opening the door to a number of compatibility issues. Here’s what that can look like:
- Things don’t line up
Handles clash with restrictors. Vents interfere with sash movement. Hinges sit too proud. Suddenly, someone’s drilling new holes or modifying frames on-site to make things work.
- Ventilation performance is hit
A high-spec window can still fail Part F if the trickle vent doesn’t deliver the required airflow — or if another component is unintentionally restricting it.
- You run into testing failures
When locks and hinges haven’t been tested together, there's a real risk of failing PAS 24 or structural compliance under Part A.
These aren’t just minor technical problems. They can translate into project delays, extra labour, and non-compliant handovers.
2. The hidden costs of incompatibility
What feels like flexibility at the spec stage can quickly turn into costly complications on-site.
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Time Lost on Site
Unexpected clashes during installation mean lost hours. Your team ends up making adjustments on the fly, or worse, removing and refitting components.
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More admin, less progress
Dealing with multiple suppliers for parts, orders, and invoices eats into your time. Chasing delivery dates or checking spec sheets pulls focus away from getting jobs done.
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Inconsistent quality
Every supplier has their own standards. That means you're never fully sure how well your locks, hinges, vents, or restrictors will perform together — or how long they’ll last.
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No clear line of accountability
If there’s an issue post-install, the blame game begins. You’re stuck figuring out which part failed — and which supplier owns the problem. Meanwhile, your customer is left waiting.
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Support becomes a maze
Need help? You might end up ringing three different technical departments. That’s fine if you’ve got the time — but most of us don’t.
These costs rarely show up in the quote — but they hit hard when your schedule’s slipping or your team is being called back to fix a door that should’ve been signed off.
3. How integrated window hardware solves the problem
The smartest way to avoid the pitfalls of mismatched hardware is to choose a complete system from a single supplier — one with a track record for performance, testing, and compliance.
When all your components — vents, hinges, locks, restrictors — are designed to work together, everything just fits. You're not worrying about tolerance mismatches, airflow calculations, or whether the handle clashes with the restrictor. It’s already been considered.
At Titon, we offer complete, integrated window hardware solutions — like our SF Xtra Sound Attenuator, combined with Select S13 hinges and PAS 24-rated locks.
Hardware kits, like these, when specified from a single, trusted supplier, should be:
- Pre-tested for compliance, where necessary, including Part F, Part A, and PAS 24
- Designed for compatibility, so components don’t interfere with each other
- Backed by one technical team, which makes troubleshooting fast and straightforward
- Covered under a single warranty, which simplifies responsibility if anything goes wrong
All this helps you avoid the finger-pointing and the admin chase. Just one point of contact — one name on the delivery note, one number to call for advice.
4. Benefits for fabricators and installers
Specifying hardware from one supplier isn’t just about peace of mind — it’s about working smarter.
- Simpler fabrication – no custom fixings or guesswork
- Fewer SKUs to manage – streamlined ordering and stock control
- Faster installs – no on-site fixes or unexpected clashes
- Trusted performance – tested systems meet regulations
- One point of contact – support, advice, and warranty in one place
Simpler specs. Stronger results.
You’ve got enough to think about without juggling hardware from multiple suppliers and hoping it all fits. When you spec integrated window hardware, you’re not just ticking a box — you’re taking control of performance, compliance, and your bottom line.
At Titon, we help you get it right the first time — with solutions that are designed to work together, supported by people who understand what’s at stake. For expert advice or product recommendations, get in touch with our sales team now.