You can dig a trench, build forms, and set a concrete footing along the wall, or you can fasten 4x4x3/16-inch angle iron to the foundation to provide a ledge, as illustrated on these pages. Even a half-high wall is a substantial weight, so fasten the angle iron with lag shields and lag screws. This layer of brick will trap moisture against the wall. Weep holes at the bottom of the wall give trapped moisture a way to escape. Expect to spend about a day laying a 4x10-foot wall. Before you begin, you’ll need to remove the siding on the surface where you plan to place the wall. Make sure you’re comfortable mixing and applying mortar, measuring and leveling, cutting bricks, and striking joints. Take off the window and door moldings—after you’ve laid the veneer, the existing moldings won’t fit. You’ll either have to replace the molding with thicker trim or add extensions to the original moldings. Using a story pole, mark the felt paper just below the door and window openings so you can properly position a top rowlock course under them. From time to time, check the mortar to determine if it’s ready for striking. When it has set up just enough that you can leave an impression with your thumb, strike the joints with a concave jointer. After striking the joints, let the mortar set up, then remove the excess with a stiff brush. Clean smears with a damp rag and a brush.
