Installing Cedar Posts on Concrete

Are you thinking about installing a fence on your retaining wall or wanting to install a gate across your drive way, but can’t figure out how to get posts on your concrete? There are a couple of different ways to do this. Keep in mind that the different types of application may only apply to certain types of fence.

The best way to install a cedar post on concrete is to order a concrete core cut or if at all possible cut the core yourself. You’ll want to make sure that the cut is large enough not only for the post that will eventually be occupying it, but also large enough to allow a post hole digging tool to be able to complete digging the hole to your desired depth. A 10-12” in diameter core cut is generally your best bet for this type of application. Once your post is placed and set in concrete; you can then fill in the cut with concrete and smooth it out with a trowel.

If you are trying to place a post on a wall it is an optimal idea to get the core cuts at 3” in diameter and about 8” deep. This will allow you to concrete in a steel chain link post. A box post can then be made to sleeve over the chain link post and can be secured by using self tapping (tech) screws. An example of this type of application is shown in the picture below.

Another way to install a cedar post on concrete is to simply buy a flat mount concrete base for your post. You will need to drill holes into the concrete. This generally can be done with a large impact driver and a concrete drill bit. After the holes are drilled it is necessary to use some type of concrete anchor to secure the base. The post can then placed into the base and secured with either bolts or wood screws.