Aluminium Windows
Available From £295 (Unglazed, +VAT)
Universal Aluminium Cills
Our range of universal aluminium cills with pre-drilled screw ports are compatible with most other door and window systems, as well as with our ALUNA window system. They are effective in directing water away from brickwork and also offer an additional design element to the aesthetics of the window.
Our aluminium cill is more robust than PVC alternatives and comes complete with plastic push-in colour matched end caps, in our standard stock colours, for a secure and sleek finish.
Cill sizes are 90mm, 150mm, 190mm and 230mm.
Available in Black, White, Anthracite Grey, textured Mill finish, and dual colours of White/Anthracite Grey and Black/White and can also be powder-coated in any RAL colour.

Technical Performance
Dimensions
Profile Feature | Technical Details |
---|---|
Frame-to-Sash Sightlines | 82mm, 70mm |
Max. Sash Height | 1500mm |
Max. Sash Width | 1500mm (Top Hung) 900mm (Side Hung) |
Max. Sash Weight | 50kg (Top Hung) 40kg (Side Hung) |
Max. Glazing Thickness | 28-44mm |
Types of Glazing | External/Reverse Adapter/Dummy Sash |
Frame Depth | 81mm Flush / 73mm Standard |
Sash Depth | 73mm |
Performances
Profile Feature | Technical Details |
---|---|
Thermal Efficiency | Window Energy Rating (WER) of A, which complies to Part L. |
Weather Tightness | Air permeability Class 4 (600 Pa) EN1 026:2000, EN 12207:1999 |
Water Tightness |
Side-hung: Class 8A (450 Pa) Top-hung: Class E1500 (1500 Pa) EN 1027:2000, EN 12208:1999 |
Wind Load Resistance |
Side-hung: Class C5 (2000 Pa;1/300) Top-hung: Class CE2400 (2400 Pa; 1/300) EN 12211:2000, EN 12210:1999 |
Security | PAS24: 2022 (class W) |

Glazing
All configurations of the ALUNA window system can be finished in several glazing options to create a style that suits any property. Choose from:
- Double Glazed
- Triple Glazed
- Integral Blinds
- Heritage Look Astragal Bars
- Solid Panel Inserts
Configurations
Some of the most popular applications that can be made from the Aluna window system are listed below but there are many more besides. Please refer to the configuration diagram.
- Can be used as a side light with openers and easily couples to our Aluna bifold door system.
- Side hung opener next to a fixed frame.
- French casement window with double side hung openers.
- Standard casement window – top opener over a fixed frame.
- Crucifix 4-pane window with 2 top openers over 2 fixed frames.


Profile
The ALUNA window is available as a contemporary flush sash in our highly desirable super slim sash to complement the slim profile of modern bifold and patio doors.
With its elegant, contemporary design, the ALUNA window perfectly complements our other ALUNA systems, bringing you a cohesive range of products to complement one another.
Interested in getting a quote on a Sliding Door System from Sign Windows? Feel free to give us a call today, our team will be happy to assist you.
Our Work
Here are just some of the work that we have carried out for our customer