Interlock® Post & Rail Fencing NZ

INTERLOCK POST & RAIL FENCING

4 Rail Fencing

3 Rail Fencing

2 Rail Fencing

1 Rail Fencing

THINGS TO CONSIDER WHEN SELECTING YOUR FENCE

Purpose

Consider your goals for the fence—whether it's for aesthetics, containing pets or livestock, defining boundaries, meeting security needs, or creating privacy. Clarifying your objectives will help us deliver a result you'll be satisfied with for many years to come.

Style and Design

Choose a fence style that complements your home's architecture and landscape. Our Interlock post and rail fencing is ideal for showcasing views and landscaping, adding elegance to traditional designs without creating a solid barrier.

Height and Regulations

Check local regulations on fence height and setbacks or covenant requirements for your section. Our Interlock Post and Rail fencing comes in heights from 0.6m to 1.2m, with custom options available. Contact us to discuss your specific needs.

Cost and Value

Weigh upfront costs against long-term value. Investing in quality materials now can save money over time by reducing maintenance and replacement/reinstallation costs.

Material

Select materials based on your needs, budget, and maintenance preferences. Options include wood, vinyl, metal, and composite. Our Interlock fences are made from 100% sustainably grown Radiata Pine, offering natural aesthetics, low maintenance, and great durability.

INTERLOCK FENCING FEATURES

Our Interlock® post and rail system is the fence we’ve spent 20+ years perfecting — serving from Waikato and all throughout NZ, it shows!

Rails slot straight into pre-routered posts. No nails, no screws, no worries. The result is a cleaner finish, a stronger structure, and a fence that still looks sharp a decade after installation.

Every post and rail is milled from higher-grade NZ pine than you’ll typically find in fencing — you can see the difference immediately. We machine all timber before treatment, so every surface is fully encapsulated and protected against rot, borer, and decay for the long term.

And with our 3-stage quality control process and 15-year structural guarantee, you’re not just buying a fence. You’re buying peace of mind.

POST SIZE OPTIONS

Our posts come in nearly any size and length you could desire. All posts feature a rough sawn finish with a 20mm chamfer top detail (a flat top is also available). The posts are fully machined before the H4 treatment to ensure complete encapsulation, protecting them from the elements.

125 x 125 mm

150 x 150 mm

200 x 200 mm

250 x 250 mm

300 x 300 mm

400 x 400 mm
Special Order

RAIL SIZE OPTIONS

All our rails are manufactured from higher-grade timber than what is typically used in fencing, setting us apart from the competition, you can visually see the difference. We recommend using rail lengths no longer than two meters to minimize issues with twisting, bending, or warping, and to achieve a nicely proportioned look, avoiding a stretched-out appearance.

150mm x 50mm x 1.8m

150mm x 50mm x 2.0m

200mm x 50mm x 1.8m

200mm x 50mm x 2.0m

NUMBER OF RAILS

The 1-rail system serves as a low barrier, ideal for parks and reserves; the 2-rail system provides a more pronounced barrier while maintaining excellent visibility; the classic and stylish 3-rail system is multipurpose; and the 4-rail system is perfect for creating a safe enclosure for pets, animals, livestock or our most pronounced property fence line.

1 Rail – 0.6m
(Finished Height)

2 Rail – 0.9m
(Finished Height)

3 Rail – 1.2m
(Finished Height)

4 Rail – 1.2m
(Finished Height)

POST TYPES

Our pre-routered post types allow for any fence layout you can imagine. With the flexibility for rails to fit into the pre-routered slots at a wide variety of angles. Changes in direction or variations in ground elevation or slopes can be handled with ease.

End Post

Inline Post

Corner Post

T Post

X Post

FREQUENTLY ASKED QUESTIONS

How much does Interlock post and rail fencing cost in NZ?

Pricing depends on the number of rails, length of run, and any gates required. Contact us for a free quote — we'll turn it around fast.

Is Interlock fencing suitable for DIY installation?

Yes — the Interlock® system is designed to be installed without specialist tools. Rails slot into pre-routered posts without nails or screws. We also have a step-by-step installation guide for your lifestyle fencing.

What is the Beams & Timber No Worries Guarantee?

Our No Worries Guarantee covers 15-year structural integrity, 3-year workmanship, delivery accuracy, and overall customer satisfaction. If anything isn't right, we sort it.

Does Beams & Timber supply nationwide?

Yes — we're based in the Waikato and supply to customers across New Zealand.

How long does post and rail fencing last?

Our Interlock® fencing is backed by a 15-year structural integrity guarantee. With proper treatment and installation, it lasts significantly longer. The key is starting with quality timber — which is why we reject around 20% of what we start with.

What timber treatment is used for Interlock fencing?

Our timber is fully machined before treatment, ensuring complete encapsulation on every surface. This protects against rot, borer, and decay — far more effective than treating pre-cut timber.

WHY OUR TIMBER IS DIFFERENT

Higher-grade NZ pine — visually superior from day one
We reject ~20% of timber we start with — only the best gets to your property
Fully machined before treatment — complete encapsulation on every surface
3-Stage Quality Control — checked at sourcing, machining, and pre-delivery
15-Year Structural Guarantee — backed in writing, no exceptions