Aluminium Window Cills

Aluminium window cills are horizontal ledges at the base of windows, designed to support the frame and divert water away. They prevent water damage by ensuring proper drainage and enhance a building's appearance.

Made from lightweight and corrosion-resistant aluminium, they offer durability even in harsh conditions. In essence, they provide structural support, water protection, and aesthetic value for both residential and commercial windows.

Aluminium window cills come in various sizes to accommodate different window dimensions and architectural requirements. The size of aluminium cills is typically determined by the width and depth measurements. Commonly, the width can range from 75mm to 300mm, while the depth can vary from 25mm to 150mm.

These sizes are designed to ensure proper water drainage, structural stability, and aesthetic appeal for windows of different sizes and styles. It is important to consult with our team to determine the appropriate size of aluminium cills for your specific window installation.

Both "cill" and "sill" refer to the horizontal member or structure at the bottom of a window or door frame. This component provides support and offers a ledge for objects or people. The term "sill" is universally accepted and is commonly used in architectural and construction contexts.

On the other hand, "cill" is a variant spelling predominantly used in British English, especially when discussing window frames. While both terms can be used to describe the same feature, "sill" is the more widely recognized term, and "cill" is less frequent in current English usage.

For aluminium window cills in the UK, the advised overhang is at least 25mm from the face of the building, ensuring effective water drainage away from the brickwork. However, from a safety standpoint, especially at higher levels, the projection should be between 75mm and 100mm from the brick's front face. This balance ensures protection from water damage, safety for passers-by, and maintains aesthetic appeal.

The thickness of an aluminium window sill should typically be between 9.5 mm and 25.4 mm. However, for specific applications, especially when additional structural support is required, the sill might need to be as thick as 38.1 mm. It's essential to choose the appropriate thickness based on the window's design and the structural needs. If unsure, it's best to consult with our team for guidance tailored to your specific needs.

A window cill should generally protrude between 25 to 40 millimetres. This projection can vary depending on architectural preferences and local building regulations. For precise measurements tailored to specific needs, it's best to consult with a professional or local building code.