Aluminium Window Cills – Custom Made & Powder Coated
Aluminium Window Cills – Custom Made & Powder Coated
At Cills.ie, we provide precision-engineered aluminium window cills across Ireland. All our cills are made-to-measure, powder-coated in any RAL colour, and designed to last. Whether for new builds, retrofits, or external insulation projects, our aluminium cills deliver durability, accuracy, and a professional finish.
At Cills.ie, we provide precision-engineered aluminium window cills across Ireland. All our cills are made-to-measure, powder-coated in any RAL colour, and designed to last. Whether for new builds, retrofits, or external insulation projects, our aluminium cills deliver durability, accuracy, and a professional finish.
What is a Window Cill?
A window cill (or sill) is the horizontal ledge at the base of a window. Its main function is to direct rainwater away from the wall, protecting the building from dampness and water damage.
A window cill (or sill) is the horizontal ledge at the base of a window. Its main function is to direct rainwater away from the wall, protecting the building from dampness and water damage.
A window cill (or sill) is the horizontal ledge at the base of a window. Its main function is to direct rainwater away from the wall, protecting the building from dampness and water damage.
Traditionally, cills were made from stone, timber, or concrete. However, aluminium window cills are now the preferred choice for modern construction and retrofit projects because they are lightweight, durable, and weather-resistant. They can also be powder-coated in any RAL colour, ensuring they match perfectly with your windows, render, or façade.
Aluminium Window Cill - RAL Preview
Benefits of Aluminium Window Cills
Durability – rust-proof, weather-resistant, and built to last.
Custom Fit – all cills are made-to-measure, including bay and complex designs.
Powder-Coated Finish – full RAL colour range available for a perfect match.
Low Maintenance – no sealing, painting, or upkeep needed.
Lightweight – easier to handle and install compared to stone or concrete.
Custom Powder-Coated Colours for Every Aluminium Profile
Custom Powder-Coated Colours for Every Aluminium Profile
Match any facade with RAL-certified powder coating. Our aluminium window cills, flashings, cappings, and trims are made-to-measure and finished in your exact colour - ideal for retrofit/EWI projects in Ireland and modern new builds. Preview shades in real time and order digitally for fast delivery.
Match any facade with RAL-certified powder coating. Our aluminium window cills, flashings, cappings, and trims are made-to-measure and finished in your exact colour - ideal for retrofit/EWI projects in Ireland and modern new builds. Preview shades in real time and order digitally for fast delivery.
RAL 7016
Slate Grey
RAL 7016
Slate Grey
RAL 7016
Slate Grey
RAL 7015
Archraclte Grey
RAL 7015
Archraclte Grey
RAL 7015
Archraclte Grey
RAL 7032
Pebble Grey
RAL 7032
Pebble Grey
RAL 7032
Pebble Grey
RAL 7044
Sild Grey
RAL 7044
Sild Grey
RAL 7044
Sild Grey
RAL 8028
Terra Brown
RAL 8028
Terra Brown
RAL 8028
Terra Brown
RAL 9003
Signal White
RAL 9003
Signal White
RAL 9003
Signal White
RAL 1000
Jet Black
RAL 1000
Jet Black
RAL 1000
Jet Black
RAL 1001
Green Beige
RAL 1001
Green Beige
RAL 1001
Green Beige
RAL 1002
Beige
RAL 1002
Beige
RAL 1002
Beige
RAL 1003
Sand Yellow
RAL 1003
Sand Yellow
RAL 1003
Sand Yellow
RAL 1004
Signal Yellow
RAL 1004
Signal Yellow
RAL 1004
Signal Yellow
RAL 1005
Honey Yellow
RAL 1005
Honey Yellow
RAL 1005
Honey Yellow
RAL 1006
Maize Yellow
RAL 1006
Maize Yellow
RAL 1006
Maize Yellow
RAL 1007
Daffodil Yellow
RAL 1007
Daffodil Yellow
RAL 1007
Daffodil Yellow
RAL 1008
Brown
RAL 1008
Brown
RAL 1008
Brown
RAL 1009
Yellow
RAL 1009
Yellow
RAL 1009
Yellow
RAL 1010
Cream
RAL 1010
Cream
RAL 1010
Cream
RAL 1011
Beige
RAL 1011
Beige
RAL 1011
Beige
RAL 1012
Light Beige
RAL 1012
Light Beige
RAL 1012
Light Beige
RAL 1013
Dark
RAL 1013
Dark
RAL 1013
Dark
RAL 1014
Maroon
RAL 1014
Maroon
RAL 1014
Maroon
Why choose
Cills.ie?
Any RAL colour: hundreds of architectural finished with UV-stable, durable coating.
Perfect matching: on-side measuring devices capture the exact RAL shade for windows and facades.
Made-to-measure aluminium: precision fabrication for cills, bay/angled cills, parapet cappings & weatherproof flashings.
Retrofit-ready: designed for SEAI external wall insulation systems with clean, watertight detailing.
Order in minutes: measure, preview colour, and track manufacturing & delivery inside the app.
Our Projects
Our Projects
Match any facade with RAL-certified powder coating. Our aluminium window cills, flashings, cappings, and trims are made-to-measure and finished in your exact colour.
Match any facade with RAL-certified powder coating. Our aluminium window cills, flashings, cappings, and trims are made-to-measure and finished in your exact colour.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
External Wall Insulation Retrofit, Dublin
Retrofit contractor avoided thermal bridging, passed SEAI inspection, and completed the project on schedule. The powder-coated finish matched perfectly with the windows and façade.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Bay Window Installation, Cork
Using our app, the builder measured and ordered a bay cill with angles in minutes. Manufactured and delivered within the week, ensuring a perfect fit for a tricky corner window detail.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
Commercial Fit-Out, Galway
Architects achieved a sharp, modern look with seamless aluminium detailing. The parapet walls were protected with powder-coated cappings, ensuring long-term durability against weather.
Frequently Asked
Questions
Have another question? Please contact
our team!
What is an aluminium window cill?
An aluminium window cill is the horizontal ledge beneath a window that protects the wall by directing water away. Unlike stone or PVC, aluminium is lightweight, durable, and long-lasting.
What is an aluminium window cill?
An aluminium window cill is the horizontal ledge beneath a window that protects the wall by directing water away. Unlike stone or PVC, aluminium is lightweight, durable, and long-lasting.
What is an aluminium window cill?
An aluminium window cill is the horizontal ledge beneath a window that protects the wall by directing water away. Unlike stone or PVC, aluminium is lightweight, durable, and long-lasting.
Can I order custom-made aluminium cills?
Can I order custom-made aluminium cills?
Can I order custom-made aluminium cills?
What colours are available?
What colours are available?
What colours are available?
Are aluminium cills suitable for retrofit projects?
Are aluminium cills suitable for retrofit projects?
Are aluminium cills suitable for retrofit projects?
How do I measure for window cills?
How do I measure for window cills?
How do I measure for window cills?
How long does delivery take?
How long does delivery take?
How long does delivery take?
Start Ordering Aluminium Window Cills Today
Cills.ie makes it easy to measure, customise, and order aluminium cills, flashings, trims, and cappings — all online, with engineer support included.
