Atmospheric window sills made of solid beech, by Kasper

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Create this project yourself with sheet material cut to size by!





1 minuut


We installed false walls during the renovation of our living room. As a result, the walls have become wider and the old window sills no longer fit in place. That's why we ordered solid beech window sills from We initially planned to paint the window sills white, but we liked the wood so much that we opted for a matte varnish. We are very satisfied with the result!

Small adjustment, big effect!

The frame widths were different, so we ordered planks of different widths. We milled a round edge of 3mm radius on the protruding part. We then secured them with polyurethane foam. The plasterer worked neatly on it. We finished the seams with the window frame and the walls with acrylic sealant. Finally, we coated it twice with transparent varnish. This makes the wood color stand out more strongly. Finishing before plastering is recommended, but we wanted to keep all options open in terms of finishing.

The dimensions of the windowsill


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How next?

Want to make this DIY project? Check out Kasper's saw list and complete your order easily.


All materials used


View all sheet materials