Install All Fence Posts First or Install Post Then Panel?

When it comes to installing a fence, there is more than one way to approach the job. One of the most common decisions installers face is whether to set all the posts first and add panels afterwards, or to work section by section, installing a post and panel together as they go.

Both methods are used across the industry and both can produce excellent results. The right choice usually comes down to the type of fencing you are installing, the ground conditions, and how much flexibility you need during the build.

This guide explains both approaches in a straightforward way so you can decide what works best for your project.

Installing all fence posts first

This method involves setting all posts in position before any panels are introduced. It is especially common with concrete slotted posts and some steel systems where panels are designed to slide down into place once the posts are fixed.

The process generally starts with marking out the full fence line. Post holes are then dug at the correct centres, and each post is set and aligned carefully. Once the concrete has cured, panels are lowered into the slots to complete the run.

One of the main advantages of this approach is consistency. With all posts in place, it is much easier to keep a straight line and maintain even spacing across longer distances. It can also speed things up later, as fitting the panels becomes a simple and repeatable task once the groundwork is done.

This method works particularly well on level ground and on larger runs where accuracy over distance matters. Experienced installers often favour it for efficiency, especially when working with slotted systems designed for this exact approach.

However, it does require careful measuring. If the distances between posts are slightly off, panels may not fit cleanly without adjustment. There is also less opportunity to correct spacing issues once the posts are set.

Another important consideration is panel weight. Heavier or more premium panels, whether concrete or high quality timber, can be difficult to lift and drop into place from above. This is made more challenging when the fit is tight, which is often the case with well made systems. In practical terms, this can mean extra labour on site, sometimes needing two or more people to safely manoeuvre panels into position. On longer runs or confined spaces, this can slow the job down more than expected.

This blog talks about installing fence panels in existing posts.

Installing post and panel together

The second approach is to install a post, position a panel, and then install the next post in sequence. This method builds the fence in sections rather than setting everything out in advance.

Typically, the first post is set and secured. A panel is then positioned, and the next post is installed against it, ensuring a correct fit. This process continues along the fence line until the run is complete.

This approach offers more flexibility. Because each panel effectively sets the spacing for the next post, there is less reliance on precise measuring at the start. It also makes it easier to adapt as you go, which is particularly useful on uneven ground or where levels change gradually.

For timber fencing, this method often feels more natural, especially when working with components that may vary slightly in size. It allows for small adjustments that help keep the finished fence looking consistent.

It is also the preferable option for certain systems that include a capping rail. Where a capping rail is installed across the top of the panels, the tops of the posts often need to sit flush with the panel height. Installing post and panel together makes this much easier to achieve, as each section can be aligned accurately during installation rather than trying to set all posts at an exact height in advance.

There are some drawbacks to consider. This method can be slower, as each section needs to be positioned and checked before moving on. Panels may need to be supported while posts are set, which can increase the amount of handling required. There is also a risk of alignment drifting slightly over distance if regular checks are not made.

This video from Jacksons explains the post and panel method nicely and they also have traditional fence installation instructions on their website.

Choosing the right method

There is no single best approach that suits every situation. The decision usually depends on a few key factors.

Fence type and panel weight plays a major role. Slotted concrete systems tend to suit installing all posts first, while timber fencing often works better when built section by section.  The number of people installing the fence also makes a difference. Cheap lap panels can easily be lifted into the air and slotted into existing posts, while the likes of Jacksons timber fence panels are very heavy.

Ground conditions are equally important. Flat, predictable ground lends itself to setting posts in advance. Uneven or sloping areas are usually easier to manage when working post and panel together.

Project size can also influence the decision. Longer runs benefit from the control that comes with setting posts first, while smaller or more detailed installations may benefit from the flexibility of a staged approach.

Finally, installer preference and experience should not be overlooked. Many experienced installers use both methods depending on the job and materials involved.

Final thoughts

Both methods are proven and widely used. When done correctly, either approach will result in a strong, straight, and professional fence.

Installing all posts first can offer speed and consistency, particularly with modern slotted systems. Installing post and panel together provides flexibility and can make certain installations easier, especially where ground levels vary or where specific systems such as capping rails are involved.

The key is understanding the strengths of each method and applying the right approach to the situation in front of you.

Also read our blog on avoiding beginner mistakes when installing a fence