Section 1: The Posts
A. Preparation for Post Installation
NOTE: It is important that the pergola be built so that the
structure is level and square.
NOTE: Our pergolas use on center measurements for width x
projection. For example, if the pergola is 12’ wide x 12’
projection the post must be 12’ on center for the width and 12’
on center for the projection. For a custom size, you can install
the posts closer together. The top canopy extends wider and
longer than the post.
NOTE: Choose the post location based on the width and
projection. For all kits, please assure you install the routed
posts accordingly. The holes for the headers are 2” x 8”. The
holes for the rafters are 2” x 6”. The headers and purlin are
installed parallel to each other.
NOTE: NOTE: 14’ &16’ pergolas will have an additional post to place in the center of the header.
For the 14’ pergola only, the center post will only be routed for the 2”x8” header, and not the 2”x6”
rafter; the rafters will be evenly spaced on each side of the center post.
B. Post Installation in Ground
1) Layout and mark the location of all posts according to size specifications. The post inserts will
need to be set at the on center measurements.
2) Dig the hole for the post (12” diameter), making sure the post will sit below the frost line for
your area (usually 36”
deep).
3) Place the Vinyl post onto
the post insert and
place them into the
hole. Set the vinyl post
so that there will be at
least 8’ from the ground
to the bottom of the
2”x8” Header, then
secure the vinyl post to
the post insert with a
self-tapping screw.
Assure that the screw
will be below ground.
4) Pour in concrete.
Assure that the post is
level and plumb, as well
as at the proper
measurement. Square
the post to the rest of the pergola so it is not twisted.
5) Repeat for all remaining in-ground posts and let the concrete set according to the
manufacturer’s instructions. Make sure all posts are set with the routed holes facing the same
direction.
C. Deck or Other Connection
1) If the posts are connecting to a deck or other structure, assure that the structural framing is
strong
enough to hold the pergola and that the posts are fastened securely. Consult a
structural engineer to determine if deck installation is possible as well as to define appropriate
fasteners.