What is architectural aluminium cills & capping?

Architectural aluminium cills and capping are custom-folded weatherproofing elements fabricated from sheet aluminium (usually 1.5mm to 3mm thick) to protect building envelopes. They include window cills, wall coping, parapet capping, and weather flashings, powder-coated to ensure durability.

Why are aluminium cills preferred for external wall insulation (EWI)?

When installing external wall insulation (EWI), the wall thickness increases by 100mm-150mm. Existing concrete window sills are no longer wide enough to shed water. Custom aluminium cills are folded to fit over the old sills, preventing water ingress and cold bridging.

How much do custom aluminium window cills cost in Ireland?

Custom folded aluminium window cills typically cost between €18 and €30 per linear metre. The price depends on the sheet thickness (usually 1.5mm or 2mm), the girth (the total width of the metal before folding), and the powder-coating finish.

What is the difference between aluminium capping and aluminium coping?

Aluminium capping typically refers to a protective metal cover fitted over parapet walls, chimneys, or columns. Aluminium coping (or wall coping) is specifically designed to cap boundary or parapet walls, featuring a slight slope and drip edge to shed water away from the wall render.

How do I measure my windows for custom aluminium cills?

Measure the total width of the window opening, adding 50mm to 100mm for wall overrides (upstands). Measure the depth from the window frame to the outer edge of the new insulation render, adding a 30mm-40mm drip nose override.

Can aluminium cills be fitted over existing concrete sills?

Yes. Custom aluminium cills are designed specifically to slide over and wrap existing concrete sills. They are secured to the window frame, bedded on low-expansion foam, and sealed with polyurethane mastic to prevent water leaks.

What are the benefits of powder-coated aluminium coping and capping?

Powder-coating provides a tough, weather-resistant finish that won't rust, peel, or fade. It uses the Qualicoat standard and can be color-matched to any RAL color code (such as Anthracite Grey RAL 7016) to match modern window frames or render colors.

What is the turnaround time for custom aluminium fabrication in Dublin?

Most local workshops (such as Cills.ie) fold and powder-coat aluminium cills, cappings, and copings in 3 to 5 working days. Mill-finished (unpainted) profiles can often be fabricated within 24 to 48 hours for urgent trade collections.

Aluminium Cills & Aluminium Capping in Ireland

Are you searching for local specialists in Ireland for custom aluminium cills and aluminium capping? Proper weatherproofing is essential for modern construction and external wall insulation (EWI) retrofits. At BuildTrade.ie, we connect you with vetted, fully insured, and highly experienced architectural metal pressings experts who manufacture high-quality, made-to-measure aluminium window cill systems, aluminium wall coping, aluminium parapet capping, and weather flashings in Ireland. Our local workshops fold and powder-coat systems to match any window frame or render color with zero-tolerance accuracy. Whether you need custom parapet wall cappings to seal a flat roof or graphite-matched cills to cover insulation depth, compare quotes from trusted local fabricators in Ireland today and secure direct trade pricing.

Made in Ireland

Local Workshop

3 - 5 Days

Typical Turnaround

Powder Coated

RAL Color Matching

Zero Tolerance

Precision Folded

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What is Aluminium Cills & Capping?

Aluminium cills and capping systems are custom-folded architectural metal components used to weatherproof building envelopes, specifically protecting window openings (window cills) and parapet walls (wall coping/cappings) from water ingress.

How Much Does Aluminium Cills & Capping Cost in Ireland?

Here are typical price ranges and baseline estimates for aluminium cills & capping in Ireland.

Aluminium Component	Estimated Cost per Metre	Standard Width / Girth	Finish Type	Turnaround
Custom Aluminium Window Sill	€18 - €28	150mm - 250mm Girth	Qualicoat Powder	3 - 5 Days
Aluminium Wall Coping / Parapet Capping	€22 - €32	200mm - 350mm Girth	Qualicoat Powder	3 - 5 Days
EWI Insulation Base Track	€8 - €14	100mm - 150mm Width	Mill Finished	Next Day
Drip Edge Weather Flashing	€12 - €18	100mm - 180mm Girth	Qualicoat Powder	3 - 5 Days

* Prices exclude VAT. Custom colors (any RAL code) and specialized end-caps will affect final pricing.

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External Wall Insulation Home Retrofit General Builders ICF Construction

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