How do I attach Trex Fencing to my deck?
It is easy to attach Trex posts to a deck if your application calls for it. Trex Fencing Posts are versatile components that can be used interchangeably as a standalone support or a sleeve over another support. This is particularly useful if you are using a Trex Fence as privacy railing or privacy screens. Trex Fencing posts can be sleeved over pressure-treated 4x4 wood railing posts that have already been attached to the frame of the deck. The Trex posts have a thick wall, but they are hollow. The internal dimension of the post cavity is 3-3/4"x3-3/4" so they will fit over a standard 4x4 wood post (typically milled to 3-1/2"x3-1/2").
For specifics on how to attach support posts for railing to a deck or how to install other types of mounts, download the Trex installation guide: https://documents.trex.com/is/content/Trex/full-trex-installation-guide-2019pdf.pdf . Section 5 contains details about various post mounts. There are no specific instructions for the installation of a Trex fence post as a sleeve. However, the installer simply needs to ensure the Trex posts are secured over the internal support post in a proper fashion. For example, if installing Trex Seclusions, attach the brackets to the posts with proper screws to fasten into the support inside. If the support post inside the Trex post is wood, attach the Trex Seclusions brackets to the post with 1-5/8" wood exterior screws or similar. The screws will go through the 5/8" thick Trex post wall into the wood support post. If the Trex fence post is sleeving over a metal post mount, use self-tapping screws to go through the Trex composite and into the metal inside.
