Eco-Oversill is a high-performance external window sill system designed to seamlessly combine superior functionality with modern aesthetics.

Manufactured using a specialised high-impact polymer resin, Eco-Oversill achieves Category 1 impact resistance – the highest classification available in this product category. The high-density expanded polystyrene (EPS) core eliminates thermal bridging, ensuring continuous insulation performance and preventing cold spots, condensation, and heat loss at window reveals.

We are confident that Eco-Oversill is currently the leading product of its kind available in Ireland and the United Kingdom.

For contractors and installers working on external insulation projects, there is no better choice. When starting your next EWI project, specify Eco-Oversill to deliver a window sill solution that meets the highest standards of quality, performance, and visual appeal – while giving your clients a finish they will appreciate for years to come.

• Category 1 impact resistance – exceptional durability against mechanical damage (ladders, scaffolding, hail, etc.)
• Zero thermal bridging – high-density EPS core provides full continuity of thermal insulation
• Premium aesthetics – smooth, uniform surface ideal for thin-coat renders, thick-coat renders, and modern cladding systems
• Long-term weather resistance – UV-stable, frost-resistant, and moisture-repellent for decades of reliable performance
• Easy and fast installation – pre-fabricated profiles compatible with the majority of external wall insulation (EWI) systems on the Irish and UK markets