A post-and-batten fence is one of the most practical and cost-effective boundary solutions for rural New Zealand properties. With the right materials, basic tools, and a methodical approach, most capable homeowners can tackle this project themselves — though larger or more complex fencing jobs are best left to a qualified fencing contractor.
What Is a Post-and-Batten Fence?
A post-and-batten fence consists of sturdy upright posts set into the ground at regular intervals, with thinner vertical or horizontal timber battens fixed between them. It's commonly used for stock containment, boundary marking, and shelter on lifestyle blocks and farms across New Zealand. The design is simple, durable, and suits our varied NZ climate well when the right materials are chosen.
Planning Your Fence
Before you dig a single hole, good planning saves time and money.
- Check your boundaries: Confirm the legal boundary with your council or a licensed surveyor before you build. Fences on or near boundaries can have legal implications with neighbours.
- Building consent: Most rural boundary fences are exempt from building consent under Schedule 1 of the Building Act, but always confirm with your local council before starting — rules can vary depending on fence height, location, and land use.
- Stock type: The height, batten spacing, and wire additions you need will depend on whether you're containing sheep, cattle, deer, or other animals.
- Measure and mark: Use string lines and pegs to mark the fence line. Calculate the total run and number of posts needed.
- Check for services: Contact MBIE Building Performance or your local utility providers to identify any underground pipes or cables before digging.
Materials You'll Need
| Item | Typical Specification |
|---|---|
| End/strainer posts | 125–150 mm diameter, H5 treated timber |
| Line posts | 75–100 mm diameter, H5 treated timber |
| Battens | 50 × 25 mm or 75 × 25 mm, H3.2 treated |
| Concrete | Rapid-set or standard bagged mix |
| Fencing staples or nails | Galvanised, 40–50 mm |
| Wire (optional) | High-tensile fencing wire for stock |
Timber treatment is critical in NZ conditions. Use H5-treated timber for posts going into the ground, and at minimum H3.2-treated timber for battens exposed to weather. This aligns with BRANZ guidance on timber durability in exposed outdoor environments. You can source treated timber from Bunnings, Mitre 10, or PlaceMakers.
Setting Your Posts
This is the most important step — a fence is only as strong as its posts.
Strainer/End Posts
Strainer posts anchor the ends and corners of your fence and take the most load. They should be:
- At least 2.0–2.4 m long (allowing 600–800 mm in the ground)
- Set in concrete for maximum stability
- Braced with a diagonal timber or wire stay
Line Posts
Line posts sit between strainers, typically spaced 2.5 to 4 metres apart depending on terrain and stock pressure. In soft or wet ground, closer spacing is better.
- Use a post-hole borer (hire one from your local hire centre) to dig holes to the correct depth — generally one-third of the post length underground.
- Place the post, check it's plumb with a spirit level, and backfill with concrete or firmly compacted soil and gravel.
- Allow concrete to cure fully (check the bag instructions — rapid-set mixes may be ready in a few hours).
- Run a string line between strainer posts to keep line posts aligned.
Fixing the Battens
Once posts are set and cured:
- Vertical battens are fixed to horizontal rails or wires stretched between posts. Space battens according to stock type — typically 100–150 mm apart for sheep, wider for cattle.
- Horizontal battens (less common in rural fencing) are nailed or screwed directly to the posts.
- Use galvanised staples or nails to prevent rust staining and corrosion in our wet NZ climate.
- Start fixing from one end, keeping battens plumb and evenly spaced using a spacer block.
- For stock fencing, you may also run high-tensile wire between posts before or instead of battens, depending on your needs.
Finishing and Maintenance Tips
- Cap your posts or cut them at an angle to shed water and extend their life.
- Inspect the fence annually for loose battens, leaning posts, or rot — especially after wet winters.
- If you want to paint or stain the timber, Resene and Wattyl both offer exterior timber coatings suitable for treated timber. Always check the product is compatible with your timber treatment.
When to Call a Professional
While a straightforward post-and-batten fence is a manageable DIY project, consider hiring a qualified fencing contractor if:
- Your property has steep, rocky, or very wet terrain that makes post-setting difficult
- You need a long run of fence (hundreds of metres) where efficiency and tensioning equipment matter
- You're fencing for high-pressure stock like deer or bulls, where structural failure has serious consequences
- You're unsure about boundary locations or legal requirements
A professional fencer will have the right equipment, experience with NZ conditions, and knowledge of best-practice standards. You can find qualified local fencing contractors on tradedirectory.co.nz.
