Yes, you can absolutely use a router to profile the tops of fence palings yourself — it's one of the more satisfying DIY woodworking tasks, and it adds a real custom touch to a timber fence. With the right router bit, a simple jig, and a bit of practice, you can produce consistent, professional-looking results without needing a tradesperson for this particular step.
Why Profile Fence Paling Tops?
Profiling the tops of palings isn't just decorative. A shaped top — whether that's a roundover, ogee, chamfer, or pointed profile — helps shed rainwater more effectively than a flat-cut top, which reduces moisture uptake and extends the life of the timber. In New Zealand's variable climate, where timber fences cop everything from UV-heavy summers to wet winters, this matters. Even a simple roundover can meaningfully reduce end-grain water absorption.
Choosing the Right Router and Bit
For this job, a fixed-base or plunge router in the 1,000–2,000 watt range works well. A trim router (laminate trimmer) can work for lighter profiles on thinner palings, but a full-size router gives you more control and cleaner results on standard 100 mm or 150 mm fence palings.
Common profile choices include:
| Profile | Look | Water Shedding |
|---|---|---|
| Roundover | Soft, classic | Good |
| Chamfer (45°) | Clean, modern | Good |
| Ogee / Roman ogee | Decorative, traditional | Moderate |
| Cove | Concave, elegant | Moderate |
| V-groove / pointed | Sharp, cottage style | Excellent |
Use carbide-tipped router bits — they stay sharp far longer than HSS bits, especially when routing treated pine, which is the most common paling timber in NZ. Look for bits with a bearing guide so you can run them along the edge of the paling consistently without a fence.
Setting Up a Simple Routing Jig
The key to consistent results across a batch of palings is a good jig. Here's a straightforward approach:
- Clamp a stop block to your workbench so each paling sits in exactly the same position.
- Rout one edge, then flip the paling and rout the other — this keeps the profile symmetrical.
- If you're doing a pointed or peaked top, make two angled passes (one per face) rather than trying to cut both sides in one pass.
- Test on offcuts first — dial in your depth of cut before touching your actual palings.
For large batches, some DIYers build a simple router table from a sheet of MDF with the router mounted underneath, which makes repetitive work much faster and safer.
Timber and Treatment Considerations
Most NZ fence palings are H3.2 treated pine (suitable for above-ground exterior use). Routing treated timber produces fine dust that contains copper-based preservatives — this dust is a health hazard. Always:
- Wear a P2 respirator (not just a dust mask)
- Wear safety glasses and hearing protection
- Work outdoors or in a well-ventilated area
- Wash hands thoroughly after handling cut treated timber
Check WorkSafe NZ for guidance on working safely with treated timber dust.
If you're using untreated hardwoods (like macrocarpa or kwila), the dust can also be an irritant — the same PPE applies.
Finishing After Routing
Freshly routed profiles expose raw end grain and fresh timber, which needs sealing promptly — especially on treated pine. Apply a timber primer or end-grain sealer before your topcoat. Resene and Dulux both offer exterior timber primers and stains suitable for NZ conditions. Wattyl also has a solid range of exterior timber coatings.
For a natural look, a penetrating oil or decking oil works well on macrocarpa or cedar palings.
Does This Work Require a Building Consent?
In most cases, replacing or upgrading fence palings is exempt from building consent under Schedule 1 of the Building Act 2004 — but fences over 2.5 metres in height, or those on certain boundaries (e.g. near a road), may require consent or need to comply with district plan rules. Always check with your local council before building or significantly modifying a fence. See MBIE Building Performance for general guidance on consent exemptions.
Tips for Great Results
- Sharp bits are everything — a dull bit tears rather than cuts, especially on end grain.
- Feed direction matters — always rout against the bit's rotation (climb cutting can be dangerous for beginners).
- Take light passes on hardwoods; you can always go deeper but you can't undo tearout.
- Sand lightly after routing to remove any fuzz, especially on pine.
- Batch your work — set up once and run all your palings through before changing the setup.
When to Call a Professional
Routing paling tops is well within DIY territory and doesn't involve any restricted building work under the NZ Building Act. However, consider calling a qualified fencer if:
- You need a large number of palings profiled quickly and consistently
- You're unsure about the structural design of the fence itself
- The fence is over 1.5 metres tall and you want confidence it's built to your council's requirements
- You'd simply prefer a professional finish without the setup time
You can find experienced local fencers on tradedirectory.co.nz who can advise on profiles, timber species, and full fence construction.
