Passive Sills window sills are designed to work with cavity wall construction and are installed in the same way as a traditional concrete sill.
For the majority of cavity wall construction projects our P1 window sill – 250mm deep with a 50mm upstand – is ideal.
Our sills have excellent insulation value, this improves the overall insulation value of a building by reducing the cold bridging at the point where the sill and window meet
The Passive sills P1 sill is approximately 10% of the weight of a traditional concrete or stone sill and reduces the risk of manual handling injuries on site.
Our window sills are available in our hybrid finish, which has a white paint primer coat and is ready to be painted any colour you choose.
✓ Complies with all building regulations
✓ Best for thermal efficiency
✓ Super lightweight
✓ Quick and easy to install
✓ Lower carbon footprint
✓ Best for manual handling
✓ Competitive cost when installed
✓ 10 year warranty
The video below shows the installation process of our passive window sills on a cavity wall construction.
Contact us if you require more details or view more videos on our Installation Videos page.
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