Step 2: Cutting the first 4"x4" posts to length.

Using the existing Splash deck as a guide, determine the height of the first corner 4"x4" post located closest to the Splash deck. Next, place a 4"x4" post in the pocket of the Dek-Block® pier and hold plumb (vertically level). Using a level on top of the existing Splash deck, mark a line on the 4"x4" post. From this line, subtract the following 4 items:

1. The thickness of the Splash deck
2. 1/2" for water drainage and air flow between the decking and the pool's coping.
3. The thickness of the surface boards. 1 1/2" for 2"x6" decking and 1" for 5/4"x6" or composite decking.
4. 5" 1/2" for the thickness of the 2"x6" support frame.

When you've completed steps 1-4, cut the 4"x4" post to length and position in the Dek-Block® pier.