Step 5: Square the frame.

Place the 2"x6" support boards on top of each 4"x4" post. Attach the 2"x6" end boards to the support boards using two 2 1/2" deck screws at each connection. Compare the length and position of the end boards with the plan provided to ensure accuracy. Using a level as a guide, ensure that both end boards and support boards are level on all four sides. Next, measure the diagonal distance from opposite corners. Adjust the outside support boards and Dek-Block® piers until the diagonal distance between opposite corners is EQUAL.

After the deck is square and level in all four directions, attach the 2"x6" support boards to the 4"x4" posts using two 2 1/2" deck screws at an angle from each side of the support board (toe-screw).