SELF-FURRED DIAMOND MESH LATH Codes require metal lath used over solid surfaces to be furred approximately 1/4" inch away from the wall to allow for the proper stucco keying behind the lath. Self-furred diamond mesh lath has a surface studded in dimples or embossed "V" groove that provide the required 1/4" inch of furring. Fastener placement should be arranged so as not to negate the furring mechanism.