Composite door glazing cassettes: A complete guide to styles and security
When it comes to composite doors, every detail matters. From the colour of the frame to the choice of hardware, UK homeowners expect a door that delivers on style, performance and peace of mind. One feature that often goes unnoticed – but plays a big role in both aesthetics and security – is the composite door glazing cassette.
In this guide, we’ll explain exactly what glazing cassettes are, the different styles available, and how they help protect your home. Whether you’re updating your entrance or starting from scratch, this information will help you make a confident, informed choice.
What is a composite door glazing cassette?
A glazing cassette is the frame system that securely holds a piece of decorative or clear glass within your composite door. It sits flush with the door surface and can be matched in colour and style to the rest of the design.
At Entrance Composite Door Solutions, we use high-performance glazing cassette systems that offer a clean finish, tight seal and long-lasting durability.
Why does the glazing cassette matter?
The glazing cassette plays two key roles: it supports your chosen glass design and reinforces the structural integrity of your door. A poorly fitted or outdated cassette can compromise the security and weather resistance of your entrance.
Our composite door glazing cassettes are manufactured using the TriSYS® system – a proven solution known for its strength, style flexibility and easy installation. These cassette systems are screwless from the outside and fully replaceable, giving homeowners lasting confidence.
Types of glazing cassette systems we offer
We currently supply TriSYS® and Decorative Glazing Systems (DGS) cassette types across our traditional and contemporary ranges. Both options are:
- PAS 24 compliant for security
- Designed for stability in all weather conditions
- Compatible with triple and double glazed units
- Available in black, white and colour-matched finishes
Our frames are thermally stable and won’t warp or fade like timber or lower-quality uPVC over time.
Glass design meets modern performance
The glazing cassette doesn’t just frame your glass – it brings it to life. Whether you’re choosing traditional bevelled glass, frosted privacy panels or contemporary zinc designs, the cassette ensures your glass design remains the visual focal point.
Want to make a statement? Our decorative glazing options pair beautifully with woodgrain and smooth finishes across our composite door styles. If you’re after something minimalist, clear and satin glass inserts deliver subtle detail with maximum light flow.
How secure are composite door glazing cassettes?
Very secure. Our cassette systems are built to resist attack and deter forced entry.
All our doors are fitted with glazed panels that undergo rigorous testing to meet PAS 24 standards. This means the door glazing cassette and glass are engineered to withstand impact, manipulation and sustained pressure.
By using bonded cassettes with high-strength adhesive and concealed fittings, we eliminate vulnerable points and ensure long-term performance.
Which glazing cassette style suits your door?
We offer a variety of styles to match your door type:
- Traditional doors (like the York or Stratford) work beautifully with bevelled or leaded glass and woodgrain-effect cassettes
- Modern doors (like the Alnwick or Lincoln) shine with minimalist frames and etched, satin or zinc-effect glazing
- All cassettes can be colour-matched to your chosen door finish for a seamless look.
Need help deciding? Our Door Designer lets you visualise glazing options in real time.
Can glazing cassettes be replaced?
Yes, they can. Our TriSYS® glazing cassette systems are designed for easy installation and removal. If you ever need to update your glass or change the look of your entrance, the cassette can be replaced without removing the full door.
This also helps futureproof your investment – offering flexibility as your tastes evolve or your home décor changes.
Do composite door glazing cassettes improve energy efficiency?
Absolutely. Combined with triple or double glazing, our glazing cassette systems help create a highly insulated barrier that keeps heat in and draughts out.
This not only contributes to lower energy bills but supports a more comfortable home environment year-round. Our doors are compatible with thermally efficient uPVC window frames, ensuring full house energy performance.
Why choose Entrance Composite Door Solutions?
We’re a family-run business with over 40 years of experience in creating secure, stylish entrances for UK homeowners. We understand that every detail matters – especially when it comes to security and long-term value.
All our composite door glazing cassettes are backed by:
- PAS 24-accredited door sets
- A 25-year structural guarantee
- 10-year surface and hardware warranties
- UK-wide installer support with over 300 trusted partners
We don’t cut corners on specification, finish or reliability. With Entrance Composite Door Solutions, you get a door system built to look great and perform brilliantly for years to come.
Ready to design your new door?
Our free, interactive Door Designer puts you in control – choose your composite door, select your glazing cassette, pick your colour and visualise the final result instantly.
For more advice on choosing the right door glazing cassettes for your home, get in touch with our expert team or find a local installer near you.
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