Grooved and ridged versions of the same type of Fir planks have been used to clad the joists to become the ceiling and the floors. 

  Photo 11 of 12 in An Outdated Swiss Chalet Is Treated to a Playful New Look

An Outdated Swiss Chalet Is Treated to a Playful New Look

11 of 12

Grooved and ridged versions of the same type of Fir planks have been used to clad the joists to become the ceiling and the floors.