How to Extend Wooden Fence Post Height?

The most common reason for extending a fence post is to raise the height of the fence to increase privacy or security.

Most localities do not require a permit for a fence that is 8 feet tall. Some people are aware that fences less than 6 feet tall can allow neighbors to look into the yard. If you start from scratch, you can customize the height of your fence.

It’s possible to add two more feet to a six-foot fence by using lattice or another type of fencing material. It’s possible that your post decayed halfway up or was broken by a freak accident. It is necessary to remove the post if it has been completely rotted away.

To maintain the same height, you must find a way to remove the old or damaged post and install a new one on top. To extend your fence post, you can use any of the following options.

Fence Extension Types

Wooden fence posts can be extended in a variety of ways. Adding a metal tie fastener or a wood face board to the front and rear of both posts are the two simple solutions.

Because each post must have a half-lap joint and through-bolts attached, the third method is a little more challenging. Let’s take a closer look at each one.

Metal connector 

If you’ve ever seen a “heavy-duty tie plate,” “mending plate,” or “tie strap,” you’ll know what I’m talking about.

Simpson’s 12-gauge model is thicker than the 20-gauge models you’ll find at your local lumberyard. As a general rule, a lower number indicates thinner metal.

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Because it’s 16 inches long, the load can be spread out across two posts, which is ideal. Structural connectors rather than nails or screws should be used to secure this strap.

The structural screws I’ve used are less likely to cause injury to my thumbs or knuckles than the structural nails I’ve used in the past.

Nails can also find a random knot in the wood and whack you in the face. If you want to keep the posts together, both are deemed structural, which is what you should do.

Wood connector

A 14 piece of lumber (whose actual dimensions are 34 x 312) is attached to the front and rear of the posts similar to the metal connector.

Metal may only be 16 inches long, but if you wanted to cover the entire front and back of your neighboring posts, you would need a much longer piece of wood.

Often, a wood face board is attached to a fence post in order to hide the ugly pressure-treated post. To add an additional post to an existing fence, you would just need longer face boards if the other side of your fence already has a face board.

The face board should be attached using the same structural screws as the rest of the cabinet. Stronger steel is used for structural screws, which are heat-treated to increase their tensile strength.

Pre-drilling the face board to avoid splitting and weakening it may be necessary depending on the type of wood used. Softwoods like pine, cypress, and cedar will all necessitate pre-drilling before they can be used in construction.

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Half-Lap joint with through bolts

When constructing a half-lap joint, precise measurements are essential. The ancient adage “measure twice, cut once” has never been more true. Every now and then, despite my best efforts, I end up cutting something incorrectly.

Each post should have an identical half-lap joint, which means that your first post should be at least 6-8 inches lower and your top-most post should be no higher.

The term “half-lap” comes from the fact that you are only removing half of the material of each post at a specific distance from the post. When they’re attached, you’ll have a joint that spans the whole width of both posts.

Two or more through-bolts join two or more vertical posts together in this situation, as shown in the image. A circular saw and a sharp chisel can be used to construct a half-lap joint, as shown in this article from This Old House.

The most important thing is to remove all of the sawdust left in the kerfs. The saw kerf bumps can be smoothed off with a wood rasp. To join the posts, you’ll need at least a 3/8-inch galvanized bolt with a 4-inch length.

In addition, a circular saw is used on both sides of the wood while a hand saw is used to cut the remaining timber.

This is my preferred approach, but when I first started using a circular saw, the kerf method was a breeze because it didn’t require a lot of practice.

There are three ways to extend a wood fence post, and this article explains each one thoroughly.
It may come down to the style of your current fence and whether or not you’ll be extending it, or if you’ll be putting up two posts for something else.

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The second technique would look great if you already have face boards on your posts. The metal hardware plates are a faster alternative if you don’t already have face boards.

In the end, if you’re extending two posts for something like a deck, the strongest and most structurally sound technique is to use the half-lap junction.

A metal sleeve that can be used to expand wooden fence posts is supposedly available in Great Britain. Unfortunately, I’ve been unable to locate this product in the United States, despite my best efforts.

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