Passive Sills window sills are designed to work with timber frame construction and are installed in the same way as a traditional concrete sill.
For the majority of timber frame builds our P2 Sill would be ideal – 225mm depth with 25mm upstand. However, we have other sizes available if required.
Our passive window sills have an 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 P2 window 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
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