Fill a paint tray with light-beige outdoor latex paint. Coat a paint roller in the latex paint, then cover the entire siding surface with the beige paint. Allow the paint to dry for 12 to 18 hours.
Fill a paint tray with rust-colored outdoor latex paint. Coat one side of a large rectangular sponge in the paint. Stamp the paint horizontally across the bottom of the siding wall, spacing the stamps one inch apart.
Stamp a second row of rectangular shapes above the first row, positioning the middle of each second row brick stamp over the space of each first row brick stamp. This creates a staggered appearance that mimics real masonry.
Repeat this process to cover the entire siding wall with stamped, staggered bricks. Allow the paint to dry for 12 to 18 hours.
Fill a paint tray with a slightly lighter shade of rust-colored outdoor latex paint. Coat a round sponge with the paint.
Lightly apply the lighter shade of paint over the individual bricks; this makes them look more three-dimensional. Allow the paint to dry for 12 to 18 hours.