Got questions or want to read more about regulations? Learn more
Fence toppers, wall spikes and croc top strips all do the same job: they remove the safe hand- and foot-hold along the top of a fence or wall that anyone climbing needs. No flat edge to grip, no quick way over.
Every Sharkguard™ anti-climb fence topper is laser-cut from galvanised steel, so it holds its edge season after season. Whether you're topping a timber fence, a Colorbond boundary or a brick wall, there's an option built to fit. Easily shop our range of fence spikes and toppers below.
Our bull croc-top fence-topper range offers 1.2m and 2.4m lengths, raw galvanised or powder-coated finishes, top mount, standard mount or timber bracket fittings.
What is an Anti-Climb Fence Topper?
A fence topper is a strip of pointed steel fixed along the top of an existing fence or wall. Instead of replacing your fence, it upgrades the top edge, where every climb either succeeds or stops.
Fence top spikes work the same way. Whatever the profile, they take away the flat, safe surface a hand or boot would normally land on. Spikes for top-of-fence installs are quick, since you're not rebuilding anything, just adding a row of fence-topping spikes to what's already there.
It's a simple fix that turns an easy fence into an awkward one to climb.
What is a Croc Top?
A croc top is fencing with a crocodile-tooth profile: a continuous row of sharp, triangular teeth rather than single, separated spikes.
That continuous line matters.
That's why croc top options turn up on commercial yards, boundary walls and high-security perimeters, anywhere a fence needs to look as serious as it performs. It's a step up from standard spikes where the risk, or the value behind the fence, is higher.
Wall Spikes for Masonry & Boundary Walls
Not every boundary is a fence. Brick, block and rendered walls need their own fixing approach, and that's where wall spikes come in. Our range of wall spikes in Australia fixes straight onto masonry along the top of the wall, using brackets suited to the wall's thickness and finish.
The result is the same deterrent as a fence topper, just adapted for a solid boundary. Got a mix of fencing and brick or block walls? Run wall spikes and fence toppers along the same boundary for one consistent line of protection.
Galvanised Steel Built to Last
Every topper and wall spike here is laser-cut from galvanised steel. It resists rust, holds a sharp profile and won't bend or crack the way cheaper plastic strips do after a season in the sun. It's also low-profile enough to sit neatly along your fence line without turning your home into a fortress.
- Resists rust
- Holds a sharp profile
- Won't bend or crack
- Low-profile on your fence line
Sizes, Profiles & Mounting
Sharkguard™'s fence toppers and wall spikes come in 1.2m and 2.4m lengths, in raw galvanised or powder-coated finishes. Mounting options include top mount, standard mount and timber bracket fittings, so the fixing suits your fence or wall, not the other way around.
- Lengths
- 1.2m2.4m
- Finishes
- Raw galvanisedPowder-coated
- Mounting
- Top mountStandard mountTimber bracket
Getting the length and mount right starts with accurate measurements, so check our Measurement Guide before you order. If you're based in Melbourne, we offer a free install quote. Everywhere else, our packs are built for a straightforward DIY fit and delivered Australia-wide.
Where to Use Fence Toppers & Wall Spikes
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Residential boundaries and side gates
Our residential anti-climb wall spikes range covers most home fence and wall types.
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Commercial premises, warehouses & construction sites
Commercial security fencing options give businesses a step up in protection.
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Any fence or wall type
Timber, Colorbond, steel fencing, brick, block or rendered walls.
Are pests the bigger issue? Our bird and pigeon spikes or cat and possum spikes range is built for that job instead.
Are Fence Toppers Legal in Australia?
Generally, yes, fence toppers and wall spikes are an accepted deterrent on a boundary you own, provided they're mounted out of casual reach and don't create a hazard for people with a legal right to be near your fence, like posties or pedestrians. Warning signage and a quick check of your local council rules are both good practices, since requirements vary by state. For the full state-by-state breakdown, see our fence spikes legality guide.
Get Your Free Fence Topper Quote
Ready to close the gap along your fence or wall line? Call 1800 174 275 for a free Melbourne install quote, or shop the croc top and wall spike range now.
Fence Topper FAQs
What is a croc top, and how is it different from single spikes?
A croc top has a continuous row of triangular teeth rather than separated spikes, so there's no gap along the fence line to grip or straddle.
Can I fit fence toppers or wall spikes to a brick or Colorbond wall?
Yes, our bracket options cover timber, Colorbond, steel fencing and brick, block or rendered walls.
What size fence topper do I need, and how do I measure?
Fence toppers come in 1.2m and 2.4m lengths. Check our Measurement Guide, or call our team for a hand.
Are fence toppers legal in Australia?
Generally, yes, as a deterrent on your own boundary. See our full legality guide for the state-by-state detail.
Are the toppers galvanised? Will they rust?
Yes, every topper and wall spike is laser-cut galvanised steel, built to resist rust outdoors.
Do you ship Australia-wide and install in Melbourne?
Yes. We offer Australia-wide shipping and a free installation quote for Melbourne properties.
Top mount vs standard mount: which should I choose?
It depends on your fence profile and where you want the topper to sit. Our team can help you pick the right fit.
