How Far Apart Should Fence Posts Be in New Zealand?

When constructing a durable fence in Auckland, knowing the correct spacing for fence posts is essential. For most wooden fences, the standard distance between posts is approximately 2.4 meters (8 feet).

Importance of Proper Fence Post Spacing

Correct post spacing is crucial for maintaining the structural integrity of your fence. If posts are too far apart, the rails may sag, and strong winds could damage the fence. Conversely, placing posts too close together can lead to unnecessary work and costs while giving the fence a less appealing appearance.

Prefabricated Panels vs. Custom Rails

When using prefabricated panels, the spacing must be precise, usually 1.8 meters (6 feet) or 2.4 meters (8 feet) wide. This often means setting posts only after the panels are positioned to ensure accuracy.

If you're crafting your own rails from timber or another material, you have more flexibility. For wooden fences, a common spacing is 2.4 meters. However, for chain link fences, which are sturdier, posts can be spaced up to 3 meters (10 feet) apart. Posts for wire or cattle fences can be spaced even further, up to 7.5 meters (25 feet) apart.

How Terrain Affects Post Spacing

Building a fence on uneven ground requires special consideration. You can either follow the ground’s contour (racking) or use the step method to keep the rails level. The step method can result in gaps at the bottom of the fence on sloped ground, which might require setting posts closer together.

A minimum distance of 1.2 meters (4 feet) is generally recommended to avoid making the fence appear overly crowded with posts. If using prefabricated panels, adjustable racking panels can help follow the ground's slope without resorting to the step method.

Maximum Distance Between Fence Posts

The optimal post spacing depends on the fence type:

• Solid Wood, Composite, or Vinyl Fences: Standard spacing is 2.4 meters. Wider spacing can compromise strength, especially in windy conditions.
• Chain Link Fences: Posts can be spaced up to 3 meters apart. To prevent sagging of the top rail, consider additional line posts. If installing privacy slats or dealing with heavy snowfall, reducing spacing to 1.8 meters is advisable.
• Wire Fences: Post spacing varies, typically between 3 to 3.6 meters (10 to 12 feet), depending on the terrain. On flat land, boundary fence posts can be spaced as far as 7.5 meters apart, but closer spacing is necessary for strength on slopes.

Installing a Panel Fence

For a wooden panel fence, set all posts in concrete before attaching rails and slats. For prefabricated panels, follow these steps:

1. Set Corner Post: Start with a corner post, usually at the highest point, and secure it in concrete. Allow the concrete to set.
2. Attach Panels: Attach the first panel to the corner post and the first line post, ensuring the panel levels the line post parallel to the fence.
3. Progress Along Fence Line: Brace each post and attach subsequent panels, moving toward the opposite corner.
4. Secure Posts: Once all panels are in place, backfill post holes with concrete.

For a more decorative and functional option, consider a cinder block fence, which is ideal for garden and yard enclosures.

By following these guidelines, you can ensure your fence is both sturdy and aesthetically pleasing, perfectly suited for Auckland’s unique conditions.