I contacted two contractors and got two different methods they would
use to put stone veneer on the house wall...
Both used felt paper and metal lath covered with mortar, except one
let the mortar dry for 48 hours then applied the stone as if it were a
block wall, the second applied the stone to the wall before the
"parging" mortar dried.
Question. Are both ways valid? Or is one way better than the other?