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.
Please Note:
Should you decide to moderately modify the dimensions of your
pergola from the standard kit size, a circular saw with a sharp
fine-tooth blade is all that you need to cut, shorten or modify the
vinyl components.
1
This pergola can also be installed on a pre-existing wood or
concrete surface using our Round Post Ground Bracket Kit
with 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
135 1/2 in.
344.2 cm
7
12 x 12 Round Post Louvered Pergola
Overhead View
191 5/8 in (486.7 cm.)
from corner of wood post to corner of wood post.
135 1/2 in.
344.2 cm
After you have determined where the posts will be located,
excavate 10” (25.4 cm) diameter x 36” (91.4 cm) deep post holes.
After holes are dug and cleaned, place the 4x4 (9x9cm) wood post
into a hole ensuring it’s level and square to string lines. The final post
height should be 94” (239 cm)out of the ground.
Fill the vacant hole with pre-mixed concrete all the way to
within 3” (7.6 cm) of the top of the hole.
Once concrete has set, backfill 3” (7.6 cm) space with soil.
Repeat for all four posts.
Please Note:
Some 4x4 pressure treated posts can be larger than 3 1/2 x 3 1/2
square due to twisting or cracking. We have allowed a tolerance
for this in the round post, however, in extreme cases you may need
to shave down the top of the 4x4 wood post slightly to get the vinyl
post started over the wood post. Before installing your wood posts in
the ground, please check to confirm this and correct at this stage if
necessary.
1
2
3
STEP T WO
Install Wood Supporting Posts Directly into the Ground
4
10”
25.4cm
36”
91.4 cm
1
2
3”
(7.6 cm)
3
94 “ (239 cm) Maximum
Note:
Shown is a 11’-6” (350 cm) length of wood, and
since the 4x4
(9x9cm)
Pressure Treated wood
comes in 12’ (365 cm) lengths, do one of the
following:
a. Cut the wood down to 11’-6” (350 cm)
b. Dig 42” (107 cm) deep holes instead of 36”
(91.4 cm)
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