Hello pros
I'm thinking of sprucing up the stable walls.
They're some sort of leca, hollow, with various large holes in places.
In other words, they generally look messy.
How should I go about smoothing the walls? How to fill in the holes?
Since it's a stable, the final finish isn't maybe the most important; I just want it to be "hole-free".......
Thankful for answers
Regards