How to Build a Stone-Veneer Fireplace Surround

One side of metal lath has cuplike protrusions that keep mortar in place. When installed, this side should face forward, with the "cups" facing up; it will feel rough to the touch when you run your hand down the wall but smooth in the opposite direction. Nail horizontal lengths of lath directly into the wall's framing on the front of the fireplace, overlapping each piece 2 inches or more and spacing the nails 6 inches apart. Then bend the lath around the sides of the fireplace, using a scrap piece of wood to help if needed, and nail it to the framing on the front and side walls to keep it in place and prevent the mortar from cracking.