Centre keeps locking
Both sashes lock independently to the frame at multiple points, with the meeting stile incorporating shootbolt locking to prevent forced separation.
Windows
French Casement Windows
Two full-height sashes that open outward from the centre with no central vertical bar, maximum light and a beautiful unobstructed view.
- 70mm multi-chamber frame
- A+ energy rated
- U-value 1.3 W/m²K (double) or 0.9 W/m²K (triple)
- Full 90° opening, no central bar
10YEARGUARANTEE
Assure certifiedNo subcontractorsFinance availablePersonalise Your Window
Colours & Finishes
Frame Colour: Smooth White
Standard colours
Extended lead time colours
Dual colour available, different interior and exterior finishes on request.
Hardware Finish: White
Handles, letterplates, and accessories available in matching finishes.
Made to measure. Confirm your colour and hardware choice during your free survey.
Free Survey
Ready to shortlist this product properly?
If this looks like the right fit, we can survey the opening, confirm the specification, and price it properly for your home with no obligation.
Free surveyFixed quoteDirect CII installation team
French casement windows open both sashes outward from the centre, eliminating the central vertical mullion that would otherwise divide the opening. The result is an uninterrupted view, a wider opening, and the maximum connection between your room and the outside. CII Double Glazing supplies and installs French casement windows across Romford and Essex using 70mm EnergyPlus profiles, achieving A+ energy ratings with U-values from 1.3 W/m²K with double glazing, or 0.9 W/m²K with triple glazing. Our directly-employed team handles everything from survey to sign-off.
Key Specifications
10-year profile guarantee. No warping, splitting, or discolouration
10-year mechanical guarantee on all locking hardware
£7,500 break-in protection promise
Independent master and slave sash locking
Optional fire egress hinge for Building Regulations compliance
100% lead-free, recyclable uPVC. BSI Kitemark certified
Engineering Detail
What makes our French casements different
Easy-clean hinge system
The friction stay hinge allows the sash to slide clear of the frame for easy access to external glass from inside the room.
Flying mullion design
No fixed central bar. The flying mullion attaches to the master sash and swings away when both sashes are open, giving a completely unobstructed opening.
Frame profile engineering
70mm EnergyPlus multi-chambered profiles with welded corners for structural rigidity, achieving A+ energy ratings across the range.
How It Works
From Survey to Sign-off
Step 1
Survey
We visit, measure, and advise on the right configuration for your property.
Step 2
Install
Our directly employed team installs with clean, tidy workmanship.
Step 3
Sign-off
Final checks, handover, and Assure certification where required.
Next Step
Want a fixed quote from a real survey?
We will measure up, talk through finishes and installation details, and give you a clear quote based on the actual opening rather than a generic estimate.
Free surveyFixed quoteDirect CII installation team
Checkatrade
“Fantastic experience from initial survey to completion. The team were professional, tidy, and the attention to detail on the finish was fantastic. Couldn't be happier with our new windows.”
Checkatrade
“Used CII for our entire house of windows. Brilliant from start to finish. Knowledgeable, reliable, and very professional. The quality of the product and installation is second to none.”
Questions Answered
