Installation Guide

Wood Post Layout & Installation
for In-Ground Application
Measure and mark out the location of the pergola posts using
string line and temporary wood stakes. Diagonal distances must
be the same to ensure a square installation. Adjust string lines
accordingly. The inside corner of the string lines will be the post
location.
1
This pergola can also be installed on a pre-existing wood or
concrete surface using the steel post base kit and a 4x4
wood post (sold separate). See page eight for more details.
Post location and placement is the most critical step in the
overall installation process. Please double check for the
possibility of any underground utilities such as sprinkler, gas
or telephone lines.
STEP ONE
After you have determined where the posts will be located,
excavate 10” (25 cm) diameter x 36” (91.5 cm) deep post holes.
After holes are dug and cleaned, place the 4x4 wood post into
a hole ensuring it’s level and square to string lines. The final post
height should be no more than 60” (152 cm) out of the ground.
If a post is higher because of obstructed excavation of
footings, please cut down in height accordingly.
Repeat for all four posts.
1
2
3
STEP T WO
Install Wood Supporting Posts Directly into the Ground
4
82 1/2 in
(209.6 cm)
82 1/2 in
(209
.6 cm)
10”
(25 cm)
36” (91.5 cm)
60” (152 cm)
1
2
3”
(8 cm)
3
7
Cardiff Pergola Instructions
116 5/8 (296.25 cm) in from corner of wood post
to corner of wood post.
Fill the vacant hole with pre-mixed concrete all the way to
within 3” (8 cm) of the top of the hole. After the concrete has
set, backfill the 3” (8 cm) space with soil/sod.
Overhead View