Casement Windows Supply
The addition of casement windows to your selection will appeal to a wider audience of potential customers because of their thermal efficiency, widespread use, and versatility.
Get in touch with us about the casement windows we have available.

01
Thermal Efficiency
Our casement windows offer U-values as low as 0.9 W/m2K, with WERs between C – A++.
02
Weather Tested
Each casement window comes with a high performance gasket, to reduce water ingress. Additionally, all of our casement windows have been weather tested to standard.
Air Permeability Class 4
Water Tightness 7A
Wind Resistance A5 2000
03
Maximum Sizes
We provide casement windows in sizes as large as:
Side Hung: 900mm X 1400mm (W x H)
Top Hung: 1200mm X 1500mm
Mutli-light Steel Transom/Mullion Reinforcement: 2400mm X 2400mm
04
Security
Our casement windows are Kitemark, and PAS 24 approved. The 2500 and 2800 PVCu casement window systems are Secured by Design.
05
Framing
Our casement windows come with one of two outer frame sizes (52mm, 70mm). You can also choose between one of three transom/mullion sizes (68mm, 88mm, 110mm).
06
Glazing Styles
We offer glazing options between 5mm and 42mm. Furthermore, you can choose one of four glazing bead styles and the option for Georgian bars.
07
Acoustic Insulation
Our windows can also provide a measure of acoustic insulation, depending on the profile. We provide three different levels of acoustic performance.
Rw (C ; Ctr) 35 (-2 ; -5) dB
Rw (C ; Ctr) 38 (-1 ; -4) dB
Rw (C ; Ctr) 42 (-2 ; -3) dB
Sustainability: A New Definition
PVCu now has the thermal efficiency of aluminium and can be recycled thanks to advances in recycling plants and other environmentally friendly practices over the past decade.
It is still possible to aim for sustainability in our products even when working on historic restorations.
Keep in mind that sustainable and thermally efficient products can be offered even when adhering to local authority guidelines.
If you have any questions about how to make the most of one of our cutting-edge products, please don’t hesitate to get in touch with us.

Technical & Testing Coverage on Products
In addition to complying with legal requirements, FastFrame also rigorously tests all of its products to ensure they are up to our own high standards.
When we manufacture casement windows, we give them the utmost attention to detail in every respect, from the standpoint of both security and weather resistance.
Read on to learn about the evaluations we conducted on our casement windows.
Choosing FastFrame
FastFrame is a frontrunner in PVCu product manufacturing and fabrication, offering the same benefits as aluminium at a lower cost.
We cut everything in-house and offer Linktrusion, making us a competitive option. FastFrame is the first UK fabricator to provide the popular European process of Linktrusion.
We’ve built dependable, long-term partnerships with our clientele because they know they can rely on our in-depth product expertise.
Get in touch with us today if you are an architect, builder, or general contractor to learn more about our specialised quoting services.
Deceuninck Casement Windows


Traditional Shades and Wooden Accents
No one offers a wider selection or higher quality of colours than we do. Black, white, and anthracite grey are just some of the standard colours for casement windows available.
Unique colours, such as Agate Grey, English Oak, and Rosewood, should not be overlooked. For your next supply of historic casement windows, just contact our Nottingham staff.









Our Latest Projects
Check out what we’ve been up to recently. As a company, we take great pleasure in displaying our wares. Check out how other products, like our casement windows, turn out in the real world.
To learn more, builders, architects, and general contractors in the Nottingham area are encouraged to contact us immediately.
WANT TO SEE MORE?
Get in Touch
If you are looking for trade supply or commercial supply of casement windows, contact our Nottingham staff right away.

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View Downloads
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Frequently Asked Questions
Do you install?
No. FastFrame is a supply only company specialising in trade and commercial work.
What profiles do you offer?
If you’re looking for traditional casement windows, we provide the Heritage 2500 Chamfered and the Heritage 2800 Sculptured windows. Let us know if you’re looking for fully reversible windows.
Do you offer aluminium windows?
We do. Find more of our aluminium profiles, like our Decalu110 steel windows, Decalu88 windows, and the Decalu94 windows.
What is Linktrusion?
Standard PVC window frames have galvanised steel within the frame for reinforcement in PVCu construction. While we still use galvanised steel for certain profiles, it’s no longer a requirement.
PVC window frame profiles use Linktrusion® in one of two ways: either as a recycled PVC foam core with steel wires and a PVC skin or as continuous glass fibres embedded in the profile, each of which includes over 200,000 metres of glass fibres per linear metre.