• Free delivery on orders of stocked items over £600 Free Delivery
  • Next day delivery on stocked items ordered by noon Next day delivery
  • Fully recycleable products & materials Fully recycleable
  • Technical Support Technical Support

Windowsills

Aluminium Windowsills from Skyline

Alumasc Skyline Aluminium Cills are offered in 3-metre lengths, complete with options for external and internal corners, union clips, end caps, and closer trims. You can place an order with either 3 or 4 bends; simply provide us with your drawing that specifies the precise measurements for before, between, and after the bends.


A choice of  of 26 matt powder-coated colours are available at the prces lsited  - for those interested in a mill (uncoated) finish or bespoke RAL or BS colours, please get in touch.

Please note that the size mentioned refers to the girth, which includes all bends, rather than the finished width of the cill.

Two girth ranges are available: 0-200mm and 201-300mm.

The images provided are for illustration purposes only, as the profile is tailored to your specific measurements and supplied in 3m lengths.

Upon placing your order, we will request a sketch to confirm your exact measurements. Within 5 working days, we will send you a design drawing for your approval before fabrication by Skyline. The typical lead time, once the drawings are approved, is 15 working days.

Skyline aluminium windowsills are designed to deliver exceptional detailing that caters to a variety of designs and budgets. Recognised as a leading brand among architects, specifiers, contractors, and developers, Skyline stands out for its quality and innovation.

* PLEASE NOTE: A Free delivery threshold of £1,250 applies to these made-to-order products

PLEASE also NOTE: These items are 'made-to-order' and as such are non-refundable

Set Descending Direction
per page
  1. 0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 3 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 3 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £115.58 Sale Price £92.46
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  2. 0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 3 Bend - One of 26 Standard RAL Colours TBC
    0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 3 Bend - One of 26 Standard RAL Colours TBC
    Was £14.39 Sale Price £11.51
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  3. 201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 3 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 3 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £154.22 Sale Price £123.38
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  4. 201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 3 Bend - One of 26 Standard RAL Colours TBC
    201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 3 Bend - One of 26 Standard RAL Colours TBC
    Was £15.37 Sale Price £12.30
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  5. 0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 4 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 4 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £120.78 Sale Price £96.62
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  6. 0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 4 Bend - One of 26 Standard RAL Colours TBC
    0-200mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 4 Bend - One of 26 Standard RAL Colours TBC
    Was £16.08 Sale Price £12.86
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  7. 201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 4 Bend, - 3mtr Length - One of 26 Standard RAL Colours TBC
    201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill - 4 Bend, - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £159.18 Sale Price £127.34
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  8. 201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 4 Bend - One of 26 Standard RAL Colours TBC
    201-300mm Girth (Cill Depth + All Bends) Skyline Aluminium Windowsill Union Clip - 4 Bend - One of 26 Standard RAL Colours TBC
    Was £17.03 Sale Price £13.62
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  9. 0-100mm Girth Skyline Aluminium Windowsill Closer - 1 Bend -3mtr Length - One of 26 Standard RAL Colours TBC
    0-100mm Girth Skyline Aluminium Closer - 1 Bend -3mtr Length - One of 26 Standard RAL Colours TBC
    Was £64.00 Sale Price £51.20
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  10. 101-200mm Girth Skyline Aluminium Windowsill Closer - 1 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    101-200mm Girth Skyline Aluminium Closer - 1 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £98.67 Sale Price £78.94
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  11. 0-100mm Girth Skyline Aluminium Windowsill Closer - 2 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    0-100mm Girth Skyline Aluminium Closer - 2 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £64.17 Sale Price £51.34
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  12. 101-200mm Girth Skyline Aluminium Windowsill Closer - 2 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    101-200mm Girth Skyline Aluminium Closer - 2 Bend - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £102.10 Sale Price £81.68
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  13. 75x2x30mm Skyline Aluminium Windowsill Channel - 3mtr Length - One of 26 Standard RAL Colours TBC
    75x2x30mm Skyline Aluminium Windowsill Channel - 3mtr Length - One of 26 Standard RAL Colours TBC
    Was £61.48 Sale Price £49.18
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  14. 75x2x30mm Skyline Aluminium Windowsill Channel - 3mtr Length - One of 26 Standard RAL Colours TBC
    Right-Hand Internal Stopend for Skyline Aluminium Windowsill - One of 26 Standard RAL Colours TBC
    Was £15.37 Sale Price £12.30
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
  15. 75x2x30mm Skyline Aluminium Windowsill Channel - 3mtr Length - One of 26 Standard RAL Colours TBC
    Left-Hand Internal Stopend for Skyline Aluminium Windowsill - One of 26 Standard RAL Colours TBC
    Was £15.37 Sale Price £12.30
    You Save 20%
    Estimated Delivery date is 16/12/2024
    Add to Compare Info
View as Grid List

15 Items