Luxury detached house featuring grey windows and modern from door with side panels

Premium Specification windows

Flush, aluminium casement windows are ideal if you’re looking for a strong and durable window solution that’s pleasing to the eye, constructed from light material, and boasts a slim frame design.

Our Scenic range of casement windows is the slimmest, most secure, and thermally efficient aluminium window on the market. We offer a huge range of design options, including ultra-slim designs, a flush outer frame, Secured by Design accreditation, a window energy rating of up to A++, and an overall U value as low as 1.0 W/m2k!


Aluminium casement windows give homes a distinct look of quality, providing a stunning fit for both traditional and modern homes alike. The practicality of our window casement design ensures they can withstand the elements and the test of time with little maintenance needed.

Incredibly slim sightlines.

Flush outer frame & flat sash windows for a stylish, modern appearance.

Suitably fitting for any style of property.

Minimal maintenance required.


  • An enhanced window system designed to comply with current and future building regulations
  • Flush and square profiles can be combined to create a modern, contemporary-looking window
  • Strong aluminium profiles can house a glazed unit weighing up to 50 kg
  • Various angled bay poles, corner posts, and structural bay poles are available on request
  • Overall U values as low as 1.0W/m2k
  • Secured by Design accreditation for extra peace of mind
  • Fire escape windows available on request
  • Easily combined with other curtain walling and modern front doors for an impressive and continuous style

Picture Perfect Windows

Expertly manufactured using the very latest in thermal break technology, our Scenic window is the most innovative and highly engineered casement-style window within our portfolio.

Made to deliver slim sightlines, clean lines, and superb thermal performance, our large casement windows are available with a variety of customisable outer frame and sash options, including a deeper outer frame for replacement installations or installation into rendered properties.

Our slim outer frame style is always available, as is our new flush outer frame, which gives a fantastic external aesthetic. We also have our new steel look style angled sash for those wishing to replicate a fashionable industrial-style window.

Our master-crafted handles sit within the window’s glazing bead and not the sash itself.

Flush outer frame and angled sashes can be combined to create a fashionable modern style.

Multiple flush casement windows can be combined to create spacious bay windows.

Built to surpass Doc L 2022 energy efficiency legislation for maximum thermal efficiency.

Want to know more about our casement windows?

Below are some of our most frequently asked questions relating to our casement windows.

Be sure to get in touch if you’re question isn’t listed here.

Equal sightlines throughout
The slim sightlines within our Scenic casement windows allows us to use the same sash profile whether the window opens or not, this means that there are equal sightlines throughout, which creates great looking windows.
Equal sightlines throughout + -
Heritage style stepped sash available
If you're looking for a more traditional appearance, or trying to recreate the popular steel look, then our Heritage style sash is the perfect solution. The specifications are exactly the same but rather than using a modern flush sash you can choose to have a step within the profile, which creates a more traditional appearance.
Heritage style stepped sash available + -
Flush sash & outer frame
Another notable feature of our casement windows is that the outer frame sits flush with the window sash. This adds to the sleek look of the window and because we have various depths of outer frames available means that we can bury the frame behind render and cladding, and add tricke-vents without the need for unsightly extension profiles.
Flush sash & outer frame + -
Secured by Design window system
Our Scenic windows are fully Secured by Design certified, this gives you the peace of mind that not only do your windows look great and keep your home warm, they will also keep your property safe and secure.
Secured by Design window system + -
All can be viewed & discussed in our showrooms
The best way to explore these features and feel the quality of these products is to see them first hand. All our showrooms display our full range of casement window products and are knowledgeable staff will be happy to explain all of these features and the benefits that they can bring to your home.
All can be viewed & discussed in our showrooms + -

Casement Windows FAQ's

What is a casement window?

Casement windows are the most popular in the UK thanks to their versatile design.

A casement window is defined as any type of window that’s connected to its frame by hinges at the side.

In broad terms casement means windows that open out whether they’re side hung or top hung windows.

Can I have different colours inside and out?

Yes, dual colours are available on our aluminium window range, though this does push out our lead time considerably, so if you have your heart set on a dual-colour finish, then contact our sales team as soon as possible.


Do you offer triple glazing?

Yes, we offer a range of glazing solutions. We offer high-performance, toughened low E double glazing as standard, but we’re happy to offer triple glazing if preferred.

Can you have blinds in the windows?

Yes, integral blinds are available throughout our window range and are available in two manual options, plus a solar-powered option complete with swipe touch and remote control systems.



  • A window energy rating of A++
  • A typical U value of 1.4 W/m2K and as low as 1.0 W/m2k
  • An air class 4 of 600 Pa
  • A water class E of 1200 Pa
  • A wind class C4 of 1600 Pa
  • Full document L compliance
  • Full Secured by Design accreditation
  • Enhanced Security Performance PAS 24:2016
  • Single or dual colour finish options with a marine quality polyester powder coat as standard


  • A frame depth of 68 mm
  • Glass thickness of 28 mm to 43 mm – suitable for triple glazing


  • Side hung vent max o/a width of 750 mm
  • Side hung vent max o/a height of 1500 mm
  • Top hung vent max o/a width of 1200 mm
  • Top hung vent max o/a height of 1500 mm


  • 420 mm – excluding windowsills and extension profiles

Get the full specifications

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colour choices for the front door


Whatever colour finish you desire for your aluminium casement windows, you’ll almost certainly be able to find it within our 3 core ranges.

We even offer an additional 200 RAL colours, complete with textured and metallic finishes. Our powder-coated, baked-on paint provides a durable finish that is guaranteed to last for 10 years.




Standard range

Want a fast turnaround and a premium look? We keep large stocks of our three most RAL popular colours.

9016 Traffic White

9005 Jet Black

7016 Anthracite Grey

Essence range

Developed by our design experts, our unique range of seven metallic colours has proved to be our most popular special finishes. They’re so exclusive they’re not even available within our standard RAL range.

Thunder Grey

Magma Grey

Stove Black

Smoke Grey




Elite range

Our final selection of special colours offers enhanced durability and a premium textured metallic finish for added sophistication.

Emerald green

Agate green

Stone Grey

Trojan Bronze

Space Grey

Ivory Cream

Umber Brown

Pearl White

Midnight Blue

Vintage Cream







We offer up to 200 RAL colours to choose from, including slight discounts for RAL 9007, RAL 7021, and RAL 7032, due to their popularity.

9007 Silver Grey

7021 Black Grey

7032 Pebble Grey


Our secure flush casement windows use toughened glass, no matter the window size.  All our casement windows have been internally glazed to provide a more secure project, and our expert surveyors are on hand to advise on containment, building regulations, and fire escape positioning.

Certass CQ Assured Scheme

Express are members of the Certass Certified Quality Assured scheme, which is a quality assurance scheme for reputable and trustworthy Companies, designed to give consumers additional confidence when working with Companies for renovation, maintenance, and improvement projects.

The Certass CQ scheme isn’t a building regulations document but offers peace of mind for the customer that their works have been installed correctly and to the relevant industry standards.

As part of the scheme, our installations are independently audited by Certass every month, and a certificate of conformity is sent to our customers upon the completion of our work. Included in the CQ scheme is a 10-year insurance-backed guarantee and a 120-day deposit protection policy for your peace of mind.

If you would like your installation to be included in the CQ scheme and receive a personalised certificate of workmanship quality please ask your sales rep.


  • The certification includes works where the removal and reinstallation of windows and doors are completed and installed by Express
  • The scheme covers replacement installations but does not include extensions and new build projects
  • The scheme covers our replacement works across England and Wales

If you would like your installation to be included in the CQ scheme and receive a personalised certificate of workmanship quality, please get in touch with your sales rep.

Featured Projects

Take your time to view some of our completed work. We’ve made sure to include projects benefiting from our modern casement windows:

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