I am sorry for my ignorance. I thought I was dealing with drywall,
but when I removed part of this interior wall (built in 1972), I saw
basically it seems like I have three layers. Inside is a gray drywall
like layer, then a brown thin layer that looks like paper but thicker
than paper, and on the outside a thin white layer that is like an egg
shell (is it stucco?).
Along the edges or joints, I have this wire mesh (chichen wire)
embedded inside the wall board.
Anyone familiar with this? What is the best way to patch holes or
finish joints to it? I would have to trim off all the wires all over