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Dublin-based aluminium fabricators. Measuring, manufacturing and fitting.
Used, approved, and certified by industry leading professionals and clients alike.
Cills.ie is a Dublin-based aluminium fabrication company supplying contractors, builders and developers across Ireland with precision-made aluminium window sills, aluminium parapet cappings, fascias, soffits, rainwater goods, and bespoke architectural aluminium fabrications. Every product is manufactured to your exact measurements in our workshop in Inchicore, Dublin 10 and delivered nationwide.
We exist because measurement errors cost contractors real money. A wrong aluminium sill means a reorder, a delay, a wasted day waiting on materials while a job stalls. Cills.ie was built to eliminate that problem entirely — with a smarter ordering system, a dedicated manufacturing team, and a fitting service that covers the whole process from site to finish.
Most aluminium suppliers hand you a product and leave you to figure out the rest. Cills.ie offers three fully integrated services under one roof: measuring, manufacturing, and fitting. You can use one, two, or all three depending on your job. Whether you need a full supply-and-fit of aluminium window sills on a new build or a one-off parapet capping for a retrofit, we handle it.
The Cills.ie app changes how contractors order aluminium sills on site. Open the app, follow the step-by-step measurement guide, and watch your exact cill profile update live in 3D as you input your dimensions. No sketches, no phone calls, no emailed photos of a tape measure against a window reveal. You see the product before you order it. If the shape is wrong, you fix it before it goes into production — not after it arrives on site.
The app handles complex shapes too. Bay cills, splayed returns, double-check throats, non-standard angles — configurations that would normally require back-and-forth with a fabricator can be configured and ordered in minutes. Once it is made, it is made. The app makes sure you get it right first time.
We produce the full range of external architectural aluminium products. Our standard range covers the most common specifications used in Irish construction, and our bespoke fabrication service handles anything outside that range.
Aluminium window sills and parapet cappings are critical finishing elements on External Wall Insulation (EWI) and retrofit projects. The sill has to sit correctly over the new insulation build-up, shed water cleanly, and protect the insulation edge. Get the profile wrong and you risk water ingress, insulation damage, and a callback.
Cills.ie manufactures aluminium sills specifically suited to EWI installations — with the correct drip edge, throat depth, and upstand dimensions to match the insulation thickness on your job. Our team understands the tolerances involved and fabricates accordingly. We also supply aluminium parapet cappings for flat roof parapets, balcony edges, and exposed wall tops where weatherproofing is critical.
For new build projects, we work with developers and main contractors to supply and fit aluminium window sills, fascias, soffits and rainwater goods across full housing schemes and apartment blocks. We can schedule delivery in phases to match your programme.
Aluminium is a precision material. Once it is cut and formed, it cannot be adjusted on site. A sill that is 10mm too narrow, a capping with the wrong drip edge, a fascia cut to the wrong angle — these are not fixable problems. They are reorder problems. And reorders cost time, money and credibility on site.
Cills.ie exists to make sure that does not happen. Our measurement system, our manufacturing process, and our fitting service are all designed around one outcome: the right aluminium product, installed correctly, first time.
Watch this step-by-step video guide showing how to measure and order custom aluminium sills from your phone using Cills.ie:
Based in Inchicore, Dublin 10. Office: +353 1 223 8774. Nationwide delivery across Ireland. Visit cills.ie to measure and order online.
A showcase of recent premium installations completed by CILLS Limited Aluminium Fabrication.
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Real reviews from satisfied clients.
"We use CILLS for our external insulation and it has helped grow our small company. The system is excellent, everything is online and orders are processed very fast. Since using CILLS for our retrofit jobs, we have had no recalls or mistakes, which we experienced with other suppliers before. Anyone doing external insulation should use this app. It is completely free and very easy to use. Daniel is very helpful and knows exactly what he is doing. Highly recommended. "
Neal M
Dublin