Polyurethane Window Sill
Polyurethane window sill drains rainwater from window undersides without creating thermal bridges.
3 products
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Frequently Asked Questions
Where is a polyurethane window sill installed?
At the exterior underside of windows to shed rainwater away from walls.
What is its advantage over marble sills?
It avoids thermal bridging, is vastly lighter, and will not crack in winter frost.
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