Products // PROD_04
Bay & Complex Cills | Made-to-Measure Aluminium Sills
Multi-segment bay window cills for irregular, angled and corner openings. Single seamless piece. No joints. No leaks. Designed segment by segment on Cills.ie.
Overview
Precision Engineered Aluminium Cills
Bay window openings and wrap-around facades are notorious sources of leaks if the cills are jointed poorly on site. We solve this by fabricating complex multi-segmented bay cills as unified, seamless assemblies or with factory-welded joints. Using site measurements configured step-by-step on Cills.ie, we pre-assemble and check each segment before powder-coating. The result is a drop-in installation that matches the exact geometry of your bay window.
This product is configured and priced dynamically. To order this exact detail to your millimetre measurements, please download the Cills app or visit Cills.ie.
Technical Specs
Irish Fabrication & Coating Standards
- 01
Geometry
90-degree corners, 135-degree bays, splayed bays, and custom angles
- 02
Welding
TIG-welded joints, dressed flat for a smooth paint finish
- 03
Aesthetics
Monolithic appearance with consistent drip-edge lines
- 04
Integrations
Stop-ends and thermal breaks custom positioned per segment
- 05
Validation
3D preview in Cills.ie configurator ensures correct angles before cutting
// Product Feedback
What Contractors Say About Bay & Complex Cills
Trade-tested reviews for our bay & complex cills specifications.
"Superb quality bay & complex cills! The Cills app made it easy to specify exact reveal dimensions on site. We saved hours in measuring and fitting."
"Fabricated precisely to our specifications. Ideal thickness for deep insulation reveals and EWI terminations. Delivered to our site within 4 days."
"Excellent finish and total consistency. Fits behind the window frame perfectly with zero rattle or bowing under thermal expansion. Highly recommend for any commercial build."
// Product FAQ
Frequently Asked Questions
Can you fabricate a multi-angle bay window cill in one piece?
Yes, we weld and dress the angled joints in the workshop, allowing you to drop a single pre-formed assembly into the bay opening.
How do I measure the angles of a bay window?
You can use a digital protractor or configure the template angles on Cills.ie to preview and confirm dimensions before cutting.
Are the welded joints on bay cills visible after powder coating?
No, our welders dress the joints flush so that they are completely invisible once powder-coated.
// Complete System
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View Specifications →Custom Profiles
Non-standard profiles for specific architectural requirements. Thermal breaks, stop ends, EWI termination details. Contact us before ordering to discuss.
View Specifications →// Get the App
The App That Ends Reorders.
Measure on site. Watch your product build in 3D. Order in minutes. Available free on iOS and Android.
// Core Principle
Cills.ie — Measure. Make. Fit.
// Ready to Order
Order in the App
In Minutes
Configure your made-to-measure bay & complex cills in 3D. Delivered nationwide in 3 to 5 days.