How do I install Exterior Thin brick over wood or metal studs?

Install gypsum wallboard or concrete board to the exterior face of the studs 

Install a water resistant membrane on top of the wallboard. Lap and seal joints according to the manufacturer's instructions. Because the thin brick system forms the weather barrier for the structure in exterior applications, proper application of the water resistant membrane is mandatory. 

Install a wire lath over the water resistant membrane. Use galvanized or stainless steel wire lath for all exterior applications. In exterior applications, where the thin brick system meets other materials flashings must be installed to direct the flow of water down and out. Do not rely on caulking. 

Apply the scratch coat of mortar on top of the waterproof membrane and metal lath. Float surface of scratch coat plumb and true and allow to set until firm. 

Apply the setting or brown coat with the straight edge of the trowel, and then the notched edge of the trowel should be used to groove the coat just prior to installation of the thin brick. 

Backbutter or apply a setting coat to the back of the brick. 

Space thin brick 3/8" apart. Beat the brick Firmly into position with a beating block or rubber mallet. All edges must be sealed with mortar so that there are no voids between the brick and the wall. 

Joints must be free of dirt, debris or spacers. Sponge or wipe dust and dirt from thin brick faces. Press the mortar into joints with a tuck-pointing tool so that they are full and free of pits and voids. Tool joints when recommended by mortar manufacturer. Use a masonry joint tool, screwdriver or other suitable implement. Keep the jointing tool clean and damp.