Hinged Casement Secondary Glazing
The most secure system in our range — perfect for fire-escape windows, awkward openings and properties where security matters most.
Built for security and access
Our hinged casement units open like a door, giving you full unobstructed access to the original window for cleaning, ventilation and emergency egress. Optional multi-point locks and key-locking handles are available on every unit.
- Left- or right-hand hinge
- Optional key-locking handle
- Approved for fire-escape openings
- Full unobstructed access to primary window
Heavy-duty and slim-line profiles
Choose the standard heavy-duty profile for demanding commercial or exposed installations, or our Vision HD slim-line profile for a discreet finish in period homes. Vision HD accepts sealed double-glazed units up to 28mm — the deepest DGU capacity in the market.
- Vision HD accepts up to 28mm DGU
- Slim sightlines for period property
- Heavy-duty option for commercial
- 200+ RAL colours available
Where hinged casement works best
Ideal for casement primary windows, fire-escape rooms, single small openings and any window that isn't practical for a sliding or lift-out solution. Commonly used in bedrooms, stairwells and commercial front-of-house.
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South Yorkshire's specialists in secondary glazing — survey, measure, manufacture and install.