Installation instructions for floorboard with slope.
1. Mount floor beams with c/c 300 mm
2. Lay the subfloor
3. Mount the floor drain
4. Spread the glue
5. Put the floorboard in place and attach it around the edges as well as around the floor drain
6. Let the glue dry and finish the rest of the floor
7. Remove all screws from the floorboard and fill the screw holes with filler