Before installing an interior finish to a masonry wall,carpenters must install 1times 2 cripple studs gypsum board stripes backing furring strips

Before installing an interior finish to a masonry wall, carpenters must install furring strips. Furring strips are thin strips of wood that are used to create a flat surface on an uneven wall. They are nailed to the wall and then the gypsum board or other interior finish is attached to them. This creates a smooth surface for painting or other finishes. Cripple studs are used in framing walls, not as a base for interior finishes. Gypsum board stripes and backing are not terms typically used in this context.