Cover sheathing with a two (2) layers of breather-type water resistive barrier, lap joints minimum 6″ at vertical joints and minimum 2″ at horizontal joints in shingle fashion. Then, in accordance with local building code, lap and install lath or mesh using galvanized nails or staples 6″ on center vertically, penetrating studs a minimum of 1″.

Continuously wrap water resistive barrier and metal lath a minimum of 16″ to next framing member around all outside and inside corners .

Apply 3⁄8″ to 3⁄4″ scratch coat.

Examine newly poured concrete closely to ensure that its finished surface contains no release agents (form oil). If it does contain form oil, etch surface with muriatic acid, rinse thoroughly and/or score with a wire brush, beadblast or sandblast. No further preparation needed.

Sandblast, beadblast or waterblast to original surface (remove sandblasting dust by washing) or securely attach lath.

Install primary water resistive barrier.

Lap and install 3.4-lb. 3⁄8″ rib, paper-backed, expanded metal lath to metal cladding supports of 20 ga. to 12 ga. using corrosion-resistant, self-drilling, self-tapping pancake-head screw with 7⁄16″ head, of 11⁄4″ length or suitable to obtain 3⁄8″ penetration beyond inside surface metal. Screws are to be installed on center equal to 1 screw/sq. ft. and shall not exceed 6″ on center in one direction.  Apply 1⁄2″ to 3⁄4″ scratch coat and allow to dry 48 hours.