Products
Trade Aluminium Window Sills & Cappings | Made-to-Measure
We manufacture aluminium cills, flashings, and trims directly from your app inputs. Explore the specifications below, download the app, and order in minutes.
Window Cills & Sills
Made-to-measure standard and deep profile aluminium window cills.
The Problem Solved: Prevents water ingress and reveal damage caused by incorrect concrete sill fits or poor on-site adjustments.
How to Order in App: Select profile, input reveal dimensions in the Cills app, check the 3D model, and confirm.
Order in the Cills App →- Material: Heavy-duty 2mm marine-grade aluminium
- Colour: Powder-coated in any RAL colour
- Delivery: Nationwide in 3 to 5 days
- Compatibility: Designed for SEAI external insulation, ICF blockwork, new builds, and retrofits
Aluminium Flashings
Custom profile weatherproofing flashings.
The Problem Solved: Seals gaps at insulation reveals and roof-to-wall junctions to stop moisture penetration.
How to Order in App: Input your specific L, Z, or custom bend dimensions into the app configurator and see it render in 3D.
Order in the Cills App →- Material: 2mm marine-grade aluminium
- Colour: Powder-coated in any RAL colour
- Delivery: Nationwide in 3 to 5 days
- Compatibility: EWI insulation terminations, parapets, roof boundaries, and weatherproofing zones
Cappings & Trims
Snap-on parapet wall cappings and architectural boundary trims.
The Problem Solved: Protects flat parapet walls from rain ingress while allowing for natural thermal expansion without leaks.
How to Order in App: Choose secret-fix or snap-on options in the app, confirm reveal widths, and place the order.
Order in the Cills App →- Material: 2mm to 3mm marine-grade aluminium
- Colour: Match window frames or cladding perfectly
- Delivery: Nationwide in 3 to 5 days
- Compatibility: Parapet walls, secret-fix boundaries, cladding joint systems
Bay & Complex Cills
Multi-segment bay window cills fabricated as a single seamless piece.
The Problem Solved: Eliminates joints and seam leaks on angled bay window openings.
How to Order in App: Enter your bay angles step-by-step in the app to configure a monolithic single-piece cill.
Order in the Cills App →- Material: 2mm marine-grade aluminium
- Colour: Powder-coated in any RAL colour
- Delivery: Nationwide in 3 to 5 days
- Compatibility: 90-degree corners, 135-degree bay windows, splayed bays, and custom reveal angles
RAL Powder Coating
Architectural-grade powder-coat finish matching any facade system.
The Problem Solved: Prevents paint peeling and ensures exact colour matching to window frames.
How to Order in App: Select your gloss level and input the RAL colour code during app configuration.
Order in the Cills App →- Material: Polyester Powder Coating (PPC) oven-cured at 200°C
- Colour: Complete RAL range (Anthracite 7016, Black 9005, White 9010, etc.)
- Delivery: Nationwide in 3 to 5 days (applied directly to ordered cills)
- Compatibility: Qualicoat Class 1 & 2 architectural standard
Custom Profiles
Bespoke non-standard profiles for architectural specifications.
The Problem Solved: Resolves complex building junctions and thermal bridging issues where standard cills cannot fit.
How to Order in App: Input custom variables or submit architectural drawings through the app's custom channel.
Order in the Cills App →- Material: 2mm to 3mm marine-grade aluminium
- Colour: Powder-coated in any RAL colour
- Delivery: Nationwide in 3 to 5 days
- Compatibility: Custom thermal break installations, ICF walls, column casing designs
// 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.
// Frequently Asked Questions
Common Inquiries
What aluminium products can I order on Cills.ie?
You can order a complete range of custom aluminium products on Cills.ie including window cills, cappings and trims, weatherproofing flashings, bay window cills, and custom profiles. All products are configured in the app to your exact millimetre measurements.
Can I get bay window cills made to measure in Ireland?
Yes, you can order bay window cills made to measure. The Cills app allows you to configure multi-segment bay angles step-by-step, resulting in a single seamless factory-welded piece that eliminates joint leaks entirely.
What RAL colours are available for aluminium cills?
All custom aluminium products can be powder-coated in any RAL colour (including RAL 7016 Anthracite, RAL 9005 Jet Black, and RAL 9010 Pure White). We apply Qualicoat Class 1 & 2 polyester powders, oven-cured at 200°C for UV stability.
Are aluminium cills suitable for EWI and retrofit projects?
Yes, our 2mm marine-grade aluminium cills are designed specifically for External Wall Insulation (EWI) and SEAI retrofit projects. They accommodate deep reveal depths and ICF blocks, preventing cold bridging and reveal water damage.
// Core Principle
Cills.ie — Measure. Make. Fit.