Measure the height from the ground to the bottom of the deck with a tape measure. Write down the width. Measure and note the distance between the deck posts.
Transfer the measurement of the height of the deck to a 4-inch by 8-inch lattice panel. Make a cut mark with a pencil.
Cut the lattice panel to the required size using a circular saw. Continue to cut panels until you have enough to span the width of your deck.
Place the first piece of lattice up against a deck post. Secure the lattice to a deck post with finishing nails using the nail gun. You can also secure the lattice panels by using the staple gun. Place a nail or staple every 8 to 10 inches along each side of the lattice panel.
Set the next piece of lattice in place and secure it to the deck post. Repeat this step to secure the remaining lattice panels to the deck posts.