Aluminium Window Sills

Manufactured in Dublin, Ireland

At Alupress, we manufacture high-quality bespoke aluminium window sills designed for both performance and appearance. Each sill provides a clean, durable transition between the window frame and exterior wall, protecting against water ingress and weathering. Our sills are fully fabricated in-house with aluminium end caps, welded end caps and upstands, available in lengths up to 4000 mm, including bay window and curved sill options. Powder-coated finishes are available in a wide range of RAL colours to suit any façade.

Document Name
Window sills datasheet alupress
Window sill ewi datasheet alupress
Window sill endcaps datasheet
1mm pre coated window sills datasheet

Why buy your sills from Alupress?

  • At Alupress, every bespoke aluminium window sill is manufactured under a dedicated production management software system that tracks each order from folding and welding to powder coating and dispatch, ensuring precision, consistency, and on-time delivery.

  • We produce a full range of aluminium window sills in 1–3 mm thicknesses, including our 1 mm pre-painted aluminium sills for lightweight, durable, and weather-resistant performance. All Alupress sills are designed for strength and durability, complete with welded upstands and stop ends to prevent water ingress and achieve a clean, contemporary finish. Profiles are available in various designs and widths, including bay and curved options, and can be powder coated in any RAL colour to complement window frames and façades. 

  • Every sill is quality checked throughout production, ensuring a precise fit and long-term performance trusted by contractors and installers across Ireland and the UK.

Features and Benefits of Alupress Aluminium Window Sills

  • Exceptional Weather Resistance – Alupress aluminium window sills are designed to protect façades from rainwater and moisture infiltration, preventing damage, staining, and mould formation within the building envelope.
  • Long-Term Durability – Manufactured from high-grade aluminium, our sills are corrosion-resistant and low-maintenance, providing long service life even in coastal and industrial environments.
  • Lightweight and Easy to Install – Aluminium offers excellent strength-to-weight performance, making our sills simple to handle and fit on-site — ideal for roofing, façade, and EWI contractors.
  • Flexible Design Options – Available in multiple thicknesses, widths, and profiles, including 1 mm pre-painted and powder-coated finishes. Sills can also be supplied as bay, curved, or welded options to suit specific project requirements.
  • Contemporary Architectural Finish – Our powder-coated aluminium window sills deliver a clean, modern appearance that enhances both the window frame and overall façade design, with a full range of RAL colour choices available.
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