The supplies that you need for the end posts of a lattice privacy screen are four 8-foot cedar or treated-wood porch posts. You will cut 12 inches off the bottom of the two porch posts, which become the end posts of the lattice screen.
You'll make the top, bottom and center rails of the lattice screen from one 1 by 4 by 8 and two 1 by 4 by 6 cedar or treated-wood boards. Cut the 1 by 4 by 6 boards in half to create four 3-foot pieces for the top and bottom rails. Cut the 1 by 4 by 8 board in half to create two 4-foot pieces for the center panel rails.
To paint the rails and the posts you need one quart of exterior primer and one quart of exterior white paint. You'll need a 50-pound bag of pea gravel to pour into the holes that each of the posts go into. Additional supplies include a box of 1-1/2-inch galvanized screws to attach the center panel top rail to the posts, and a box of 1-inch galvanized screws to attach the lattice panels on the back of rails, posts and frame.
The tools you need to build a lattice privacy screen are a circular saw to cut the porch posts and a tape measure to measure each panel opening from the top rail to the bottom rail and from the center of each post. You'll need a paintbrush to apply the exterior primer and exterior paint. Use the carpenter’s level to ensure that the posts are exactly vertical and a shovel to dig the holes. Cut the lattice panels to size using tin snips, and use an electric drill with 1/16-inch bit and screwdriver bit to drill holes on the center panel top rail so you can screw the rail to the posts.