This room was also pretty tough. The wall was heavily damaged and dirty. The wall was sand coated, so it was very easy to crumble.
The pillars were also dirty.
At first I filled the pillars, then started to renovate the walls.
The most significant task is covering.
Then I applied a foundation coat.
The walls were so hard to apply diatomaceous earth evenly because the surface is not flat at all.
I had to apply it 4 or 5 times.
Finally the walls have been done!
Now it’s totally neat.
Renovating the walls made me really exhausted.
For a while my wrist could not move properly.
You can see the process in the following;