A plastic post and rail fence is a simple, strong, and clean-looking fence often used on farms, paddocks, and big blocks of land. It has vertical posts and horizontal rails that connect between the posts. This type of fence helps keep animals in, makes properties look tidy, and needs very little upkeep.
More property owners in Australia are choosing PVC fencing over wood or metal. This is due to the multiple benefits of PVC, including being low maintenance and high-performance. A good plastic fencing set-up will stay looking fresh for years.
If you’re thinking of building one yourself, this guide will walk you through choosing and installing the right PVC post and rail fencing for you, step by step.
1.Why Plastic Fencing is Worth It
Before you start digging holes and setting posts, it helps to understand why many landowners across Australia are switching to PVC fencing system:
- Durability: Unlike timber, PVC won’t rot, warp, or splinter. It handles sun, wind, and rain with ease.
- No painting: You’ll save time, no more need for repainting or resealing every season.
- Safer for animals: The smooth surface reduces injuries for horses and livestock.
- Low maintenance: No rust, termites, or mould to worry about.
- Clean finish: PVC fencing looks neat and tidy with minimal upkeep.
- Long-lasting quality: While wood might warp or attract termites, with plastic fencing you don’t need to worry about itvdegrading over time.
2. What You’ll Need Before You Begin
Before you start building, gather your tools and materials. Planning ahead will save time and prevent mistakes.
Here’s a basic list of materials and tools for a standard plastic post and rail fence:
Materials:
- PVC fence posts (line, corner, end, and gate posts)
- PVC rails (usually 2-rail or 3-rail systems)
- Concrete mix (for setting posts)
- Gravel (optional, for drainage in post holes)
- Post caps (snap-on or glued)
- Gate kits (if required)
- Screws or brackets (based on the system you choose)
Tools:
- Measuring tape
- Post hole digger or auger
- Level
- Hammer and string line
- Spirit level
- Wheelbarrow and shovel
- Saw (if cutting rails to custom lengths)
- Drill
- Safety gloves and boots
- Sun protection (hat, sunscreen)
Choose the Right Post and Rail Setup:
Talk to your local PVC fencing suppliers before you buy. Different properties need different types of fencing. Choose from 2-rail, 3-rail, and 4-rail systems.
- 2-rail: Good for marking boundaries or landscaping.
- 3-rail: Standard for horses and large livestock.
- 4-rail: For areas needing more containment or a taller profile.
Also, think about the top of your posts. Some people prefer flat post tops, while others prefer domed tops for a finished look.
Epert Tip: Use aerial maps (like Google Maps) or fencing calculators to estimate how many posts and rails you’ll need. It’s simple math: just divide your boundary length by the spacing (usually 2.4 metres per section).
3. Preparing the Site: What Most People Skip
This is where many make early mistakes. The cleaner your site, the easier the build.
- Clear the Area
Remove grass, rocks, tree roots, and old wire. A clean base stops uneven posts and helps your concrete sit firm.
- Mark Your Boundaries
Use a string line and pegs to mark your fence path. Double check you’re inside your property lines. You may need to check with your local council about fencing rules.
- Soil Check
Different soils need different hole depths:
- Sandy = deeper holes for grip
- Clay = holds better but needs adequate drainage
- Rocky = may need a breaker tool
- Utility Check
Always call before you dig. In Australia, dial 1100 or visit “Before You Dig.” online
- Slope Consideration
If your land is on a slope, plan rail heights carefully. You may need to space posts closer together to keep rails level.
4. Step-by-Step Plastic Post and Rail Fence Installation Guide
Next comes the building part. Go through the detailed steps first to make sure you are comfortable with process.
Step 1: Mark & Dig Post Holes
Measure and mark where each post goes. Standard spacing between posts is 2.4m to 2.6m apart. Use your string line to keep a straight line.
Hole Depth Guide:
- Soft soil: 700–800mm deep
- Firm soil: 600–700mm
- Windy areas: Go deeper
Post holes should be about 200–250mm wide to hold concrete.
Step 2: Concrete and Set Posts
Mix concrete in a wheelbarrow. Use about 1½–2 bags per post. Quick-set concrete is fast, but traditional mix allows a longer time for you to adjust the post.
Place the post n the hole, check it’s straight with a level, then pour in concrete. Tap gently to remove air pockets.
On sloping land, brace the posts while they set. Use wooden supports to hold them still.
Wait 24 hours before moving on.
Step 3: Attach Bottom Rails
Different systems use clips, slide-in brackets, or screws. Check the guide from your PVC fencing supplier.
Important: Leave a small gap between the rail and post to let the plastic fencing expand in heat. Never glue them – plastic post and rail fence systems are made to flex with weather.
Step 4: Install Top Rails & Add Caps
Once the bottom rails are in, do the same for the top rails. They should click or screw into place.
Then push or screw on the post caps. Make sure they’re snug. If using adhesive, clean off any extra.
Step 5: Final Checks and Adjustments
Walk along the fence. Make sure rails are straight and level. Tighten any loose fittings.
Check again after 48 hours. Some settling may occur. If needed, add a bit more concrete or adjust brackets.
5. Example Reference of a Rail/Post System
To get a better understanding of the installation process, let’s understand this through an example.
Example Setup: Horse Paddock in Victoria
Let’s say you own a hobby farm in outer Melbourne. You have two horses and want to fence off a 60m x 30m paddock.
You’ll need:
- Around 40 posts (spaced every 2.4m)
- 3 rails per section = about 360m of rails
- 40 caps
- 60 bags of concrete
- Tools as listed above
Add a matching gate and you’re ready. Pick a 3-rail system with domed tops. The clean white rails will stand out, and they’ll last in rain, heat, and frost.
6. Common Mistakes That Ruin PVC Post and Rail Installations
Even small mistakes can cause big problems later. Here are the common ones to avoid:
- Digging without checking for cables – this could be dangerous and expensive
- Post holes not deep enough – this can cause wobble or lean
- Skipping concrete in the middle posts – may lead to sagging
- Forgetting plastic expansion – can result in rails can buckling in summer
- Bad string-line setup – can mean your posts won’t line up
- Buying from unknown sellers – many cheap imports crack or fade quickly
Use quality parts from trusted PVC fencing suppliers in Australia to avoid these issues.
7. Tips on Working with Australian Ground Types
Clay soil: Soaks water and expands. Add gravel and use deeper holes.
Sandy soil: Easy to dig but not stable. Use wider holes and more concrete.
Rocky ground: Harder to dig. You may need a jackhammer or auger attachment.
Black soil (in QLD): Expands in wet, cracks in dry, requires the addition of extra stability and drainage.
Always install on dry days and give concrete proper curing time.
8. Maintenance Tips for Long-Term Performance
A good plastic post and rail fence should last 20+ years with simple care. Look after your PVC fencing by:
- Washing with water and soft soap. Use a cloth or sponge, never a wire brush
- Checking for UV cracks. This is unlikely with good plastic fencing, but check once a year
- Tightening fittings after storms
- Fixing knocked rails by unclipping and sliding back in
- Keeping grass short near the bottom rail. This stops pests nesting underneath
Why Buying From the Right PVC Fencing Supplier in Australia Matters
Not all PVC fencing suppliers offer Australian weather appropriate products. Choose one that supplies fencing suited to harsh sun, storms, and rural use.
Here’s what to ask fencing manufacturers or sellers before you buy:
- Do they offer a UV warranty?
- Is plastic fencing strong enough for farm use?
- Has the fence been tested for high winds?
- Is the fencing made for the Australian climate?
- Is there a warranty?
Buying from a trusted company means faster support, better advice, and matching stock parts for future fixes.
Look for companies who focus on fencing, not just general building gear. This will helps ensure you get parts that work together and makes installation easier.
Finishing it Off
A quality, log lasting plastic post and rail fence set-up takes time and planning, but the result is worth it. PVC fencing is neat, tough, and perfect for Australian land and weather.
The key to success is buying quality components from experienced PVC fencing suppliers, using the right tools, and taking each step carefully.
By following the guide above, your plastic fencing will last for decades, with only small checks required occasionally. Map your land, count your materials, and set up strong posts. Don’t rush the job – your fence will stand straighter, longer, and look better if you take the time to do it well.
If you are looking for fencing that holds up across paddocks, properties, and everything in between, you can contact a trusted PVC fencing supplier in Australia like FSP Oz Products.
We offer heavy-duty PVC fencing solutions designed for Australian farms and commercial properties. Working with Australian customers for over 24 years, we have gained an understanding of farmers, viticulturists, and stud owners’ unique needs. Contact us today to learn more.
