The pellet boiler has been removed and the old firewall between the laundry room and boiler room no longer serves any purpose. The wall is made of brick (to the right of the door section) and concrete cavity blocks to the left of the door. Both brick and concrete cavity blocks are about 10 cm thick. It is not attached to the ceiling or floor (not embedded) and at the two test holes I have made, you can clearly see the casting traces from the ceiling (which must have been cast before the wall was built?).
The other walls (exterior walls), the wall between the laundry room/boiler room and the den/basement hallway, as well as the wall between the den and the hall/bathroom, are about 20-23 cm thick. There is no wall that aligns on the floor above (bedroom).
I also have 3 different versions of the original drawings, which both describe how the wall I now want to remove does not exist at all, how it is an extra wall in the middle with several small rooms, and where there is a doorway between the cold room/boiler room (on the last drawing, however, the fireplace was not included, so I assume the chimney is behind it today)...
