During the week I had a lot of contact with the sauna specialist. Basically chasing them to make sure I would get the materials in time. In the end they could not guarantee the delivery, so I made a plan B. I asked Mo brother Mati to help out. He has a very big trailer that would easily fit all the materials. We agreed to pick up the materials on Friday.
On Saturday I started with the tile baseboards to finish the floor. On Sunday I used aluminum tape tape to cover all the seams between the insulation plate and cover the screw holes. After this I could start adding a wood frame to the wall and ceiling that will hold the weatherboards. A nice start of the holiday season!