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A timeless style with a completely flat exterior, the Decalu88 is highly flexible option and suitable for a wide range of applications.
Designed for and with, UK fabricators and installers.
Home / Products / Windows / Decalu88 Flush Casement / Decalu88 Flush Casement
Our new casement window. Your growth.
Developed over more than 18-months the Decalu88 Flush Casement is the aluminium window that you asked for.
Headline u-values of as low as 0.8w/m2k, redefine expectations of energy efficiency in an aluminium window system.
Stunning sightlines create a contemporary, minimalist and sophisticated, architectural aesthetic, defined by a flush finish between the sash and the frame.
Modular, pre-gasketed and marine-grade powder coated and dual colour as standard, the Decalu88 Flush Casement is pump-primed to make you money.
The Decalu88 Flush casement
Slim 88mm aluminium system with equal sightlines
Flush internally and externally
Patented thermal break
Minimum/max. glazing 12-52mm units
U-values of as low as 0.8w/m2k triple glazed – Future Homes ready
U-value of 1.2w/m2k with a centre pane u-value of 1.0w/m2k – newbuild double-glazed!
U-value of 1.4w/m2k with a unit with a ‘standard’ centre pane u-value of 1.2w/m2k.
Modular: common outer-frame vent and bead, lowering stock-holding
The Decalu88 Flush Casement: U-values as low as 0.8w/m2k triple glazed and 1.2w/m2k
Decalu88Flush sets a new standard for energy efficiency in aluminium window systems.
This includes headline u-values of as low as 0.8w/m2k triple glazed – that’s a Passive House, equivalent level of performance.
The even bigger wins for fabricators and installers are in the still impressive ranges of performance that the Decalu88 Flush Casement achieves double-glazed.
With a high performance patented thermal break, Decalu88 Flush gets down to u-values of as low as 1.2w/m2k with a centre pane u-value of 1.0w/m2k.
That’s a newbuild level of performance without having to go to a triple-glazed unit!
The patented thermal break used in the Decalu88 Flush Casement means that it makes meeting Part L energy regs for home improvement a walk in the park.
There’s no need to move to a more expensive glass specification, you can achieve a Part L compliant home improvement u-value of 1.4w/m2k with a unit with a ‘standard’ centre pane u-value of 1.2w/m2k.
Installers are more competitive and fabricators win more business!
Take the tour
How low can you go?
Many aluminium systems have struggled to meet the latest round of regulatory requirements for thermal efficiency under the revisions of Part L in June 2022.
But more change is coming around the corner! The expectation is that 2025 will deliver a further uplift in performance. Newbuild requirements could be as low as 0.8w/m2k under the new Future Homes Standard.
If you’re systems company struggled with Part L, it’s time to get in touch.
The Decalu88 Flush Casement has been developed by our UK design team and in partnership with our customers (and one or two key prospects).
As all great innovations should be, The Decalu88 Flush Casement is the product of a journey. The developmental project ‘Iteration49’ was named after the number of design changes and refinements we have made – yep, all 49 of them!
The late nights, the weeks, the months (the occasional dead ends), have fed into the product that we have today – and most importantly – one which will continue to deliver opportunity long into the future.
New window and door systems are great – we love them. But they can often come with wealth of frustrations attached as those small, niggly fabrication irritations are discovered.
That’s another reason why like a fine wine, Iteration49 has taken a while to mature into a great new aluminium system. It’s been put to the test in real manufacturing environments throughout its development, so there are no surprises.
In this case ‘new’ means ‘good’, not ‘get ready for a manufacturing headache.’
Don’t think for a moment that we’ve forgotten about installers. We haven’t. We know it’s not only about delivering products which are great to make, they have to be good to fit – and deliver on design.
Iteration49 is crammed full of installation efficiencies but also end-user appeal. We guarantee aesthetic appeal, but also next generation performance.
This includes setting the new standard for energy efficiency in an aluminium system with up to Passiv Haus equivalent levels of performance.
The Decalu88 Flush Casement has been developed by our UK design team and in partnership with our customers (and one or two key prospects).
As all great innovations should be, The Decalu88 Flush Casement is the product of a journey. The developmental project ‘Iteration49’ was named after the number of design changes and refinements we have made – yep, all 49 of them!
The late nights, the weeks, the months (the occasional dead ends), have fed into the product that we have today – and most importantly – one which will continue to deliver opportunity long into the future.
New window and door systems are great – we love them. But they can often come with wealth of frustrations attached as those small, niggly fabrication irritations are discovered.
That’s another reason why like a fine wine, Iteration49 has taken a while to mature into a great new aluminium system. It’s been put to the test in real manufacturing environments throughout its development, so there are no surprises.
In this case ‘new’ means ‘good’, not ‘get ready for a manufacturing headache.’
Don’t think for a moment that we’ve forgotten about installers. We haven’t. We know it’s not only about delivering products which are great to make, they have to be good to fit – and deliver on design.
Iteration49 is crammed full of installation efficiencies but also end-user appeal. We guarantee aesthetic appeal, but also next generation performance.
This includes setting the new standard for energy efficiency in an aluminium system with up to Passiv Haus equivalent levels of performance.
Elegant and understated
A timeless style with a completely flat exterior, the Decalu88 is highly flexible option and suitable for a wide range of applications.
Minimalist high-end architecture
The Decalu88 New Steel Window is defined by a contemporary high-end architectural aesthetic making it ideal for modern statement installations.
Minimalist high-end architecture
The ultimate in minimalist design, the opening window sash is completely hidden behind the frame in this modernist window designed to maximise light.
Modern and elegant design
This commercial window solution is available with automatic opening, making ideal for specifications including smoke venting.
Sculptured detailing and exceptional design flexibility
The Decalu94 is a more traditional window option featuring classic detailing for period installations.
High rise and ultra-energy efficient solution
This pivoting window rotates 160° for easy cleaning and maintenance, making it ideally suitable to applications where access is an issue.
Warehouse and industrial loft style
Inspired by the industrial trend, this window is perfect for contemporary statement builds.
A combination of sustainability, design and comfort
Stanier Road, Porte Marsh Calne, Wiltshire SN11 9PX
UK