The Envisage flush casement is designed along simple lines, intended to replicate the earliest glazed timber windows from centuries past.

Characterised by a simple clarity of design and geometry, the casement’s opening lights do not sit proud of the outer frame. Envisage Windows brings the traditional timbered style of the late middle ages in line with rigour of the 21st century, offering exceptional security, performance, and insulation.

Because it maintains the original proportions used by carpenters for hundreds of years, the flush casement can be easily adapted to accommodate a wide variety of period and contemporary hardware or colours, which means that it can give you the finish that suits you best. An adaptable design means casement windows will suit any home, whether it’s a new build, or a heritage property.

Oak Envisage Flush Windows

The little details matter, so select your hardware with care…

You can only truly declare a window design to be complete when it has been accessorised with the most appropriate hardware. We have a great range of traditional and contemporary handles and stays, which will complement any property type.

Oak Envisage Flush Windows
Grey Envisage Flush Windows


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About our Envisage Flush Windows

The windows integrated into your house need to protect the building from intrusion and the people living within it. Envisage will do both of those things as we incorporate a multi-point locking mechanism into each window.

If you are unfamiliar with the Envisage Flush Window, just click on the different hotspots to find out more about each of its main features.

Envisage Flush Window

Envisage Locking

Featuring our robust shootbolt envisage locking system, you can rest assured you Envisage window will keep you home and family protected from the threat of break-ins.

Envisage Glass

Draughts and cold spots are a thing of the past. We’ve used smart design and high-performance next generation glass to guarantee your warmth and comfort. So, all you need to worry about is which style and colour to choose.

Envisage Frame

Appealing to the perfectionist in you, the perfectly balanced symmetrical panes make for a clean, flush and minimalist finish. Multiple astragal bars allow you to create a design that’s ideally suited for traditional properties.

Envisage Hinge

Easy-clean Friction Stay Hinges with smooth operation and anti-crowbar technology to prevent would-be intruders from accessing your home.

Envisage Handles

Whether you’re matching handles to a modern new-build or a traditional cottage property, you’ll find the Envisage hardware range is well positioned to meet even the most unique of needs.

Reduce those fuel costs and save money…

Our Envisage Flush Windows incorporate the very latest window technology, which will help with temperature regulation, keeping you warm and cosy indoors. Although you can’t see it, there is a clever coating that traps the heat from your boiler and also harnesses the warmth of the sun.

Envisage Flush Windows
Envisage Flush Windows
Envisage Flush Windows


It’s possibly doing them a disservice calling the coloured finish, glazing and hardware ‘small details’ as they play a huge role in the appearance and functionality of the window. Discuss the many options with a James Oliver advisor.

Much of the performance of Envisage stems from the glazed insert...

As you would expect of a high-performance window, like Envisage, the glazed unit within the UPVC frame can offer an extremely low U-value – potentially as low as 1.2W/m2K. An inert gas is also inserted into the sealed unit, and the window has a warm-edge spacer bar to create a thermal barrier between the inside and outside. It won’t matter what the weather is doing outside because Envisage will keep the inside brilliantly ventilated. For advice on glazing options, speak to a James Oliver consultant.

Furnishing an Envisage window is a fun part of the buying process...

You will, of course, need to choose a coloured finish for a set of Envisage windows, while also instructing our team of the furniture you want affixed to the design. Our handles and stays massively contribute to the overall functionality of Envisage, and we’ve made sure that they imitate the styling of traditional flush casement window hardware.