Our Exterior Window Sills collection features decorative sill mouldings designed to create a clean, defined finish beneath windows while enhancing the overall appearance of a building. Suitable for both traditional and contemporary architecture, exterior window sills add depth, proportion and visual balance to any façade.

Manufactured from high-density EPS and finished with a durable resin-quartz plaster coating, these lightweight mouldings are designed for long-term outdoor performance. They resist moisture, frost and UV exposure while offering a practical alternative to traditional concrete or stone window sills, making installation faster and easier.

Exterior window sills can be installed as standalone architectural features or combined with our Exterior Window Frames & Surrounds and Above Window Cornices to create a complete decorative window system. For a coordinated exterior design, they also complement our Crown Cornices, Belt Cornices and Quoins collections.