Decision guide
Surface-mount vs in-ground bollards: which fixing?
The choice is about the slab and about access. Here is what each fixing needs, what it costs and which SafeWise bollards use it.
Updated 28 October 2026
Short answer: A surface-mount bollard bolts to the top of a sound slab with M10 anchors and is the simpler, usually lower-labour job. An in-ground bollard sits in a socket core drilled (about 130mm for 90mm, 220 to 225mm for 140mm) or cast into the slab, and lifts out when it is removable. SafeWise fixed bollards are surface-mount (from $80 ex GST), and removable bollards use an in-ground socket (from $120). Safety and delineation bollards: not impact-tested or certified to hostile-vehicle standards such as PAS 68 or IWA 14.
Figures: SafeWise product data. Standards are quoted as commonly cited guidance, so check the current edition. How we check.
On this page: Side by side · What the slab needs · Install steps · Cost · When each is right · Is in-ground stronger? · Products · FAQs
Side by side
Surface-mount and in-ground, side by side
Removable vs fixed is about access. Surface-mount vs in-ground is about how the bollard meets the slab. The two overlap, which is why the terms get muddled.
| Factor | Surface-mount | In-ground socket |
|---|---|---|
| How it is fixed | Base plate bolted to the top of the slab with M10 anchors, typically 100–150mm long | Socket set into the slab, cast into new concrete or core drilled into an existing slab |
| The hole | Anchor holes only | About 130mm core for the 90mm socket, 220–225mm for the 140mm |
| Installation effort | Usually the least labour | More: core drilling or a pour, then grout and cure |
| Access | Stays put | Lifts out with a key lock when removable |
| If it is damaged | Can usually be unbolted and replaced, after the anchors and slab are checked | The socket stays; the bollard lifts out and is replaced |
| SafeWise product | Fixed 90mm and 140mm | Removable 90mm and 140mm |
| From (ex GST) | $80 and $110 | $120 and $140 |
A fixed bollard can also be set in the ground, cast in or core drilled, but SafeWise doesn't supply that type. For the access question see removable vs fixed bollards.
The slab
What each fixing needs from the slab
Surface-mount
- Sound concrete. No cracks, crumbling edges or patches where the plate sits.
- Edge distance. Too close to an edge or joint and the concrete can break out. Work to the anchor datasheet.
- Enough thickness for the anchor length. Thin or old slabs need an installer to assess them.
- Not asphalt or pavers. They need a concrete footing under the base plate. See bollards on asphalt, pavers and soil.
In-ground socket
- Depth. The 90mm socket (Ø102 × 4mm) is approximately 225mm deep. The 140mm socket (Ø152 × 4mm) depth: confirm it with us before you drill. See how deep to set a bollard and the core drill size guide.
- Room below. Check the slab thickness and what lies under it, including reinforcement.
- Drainage. Gravel under the socket stops water standing in the hole.
- A new pour if concrete is going in anyway.
For either, lodge a Before You Dig Australia enquiry and scan the slab before drilling. Power, water, gas, communications and reinforcing steel can all sit in or under a slab.
Installation
Install steps, summarised
SafeWise supplies product only, so use a qualified installer or concreter. Surface type and depth change the job: see asphalt, pavers and soil and how deep to set a bollard.
Surface-mount
- Check the slab and locate services, then mark and drill the holes through the base plate.
- Clean each hole, set the M10 anchors and tighten to the datasheet torque. Resin anchors must cure first.
- Full steps: how to install fixed bollards.
In-ground socket
- Locate services, then core drill or form up a new pour. Add gravel for drainage and set the socket plumb.
- Backfill with non-shrink grout or concrete, trowel level and cure fully before fitting the bollard.
- Full steps: how to install removable bollards.
Cost
The cost difference
On product, the in-ground option costs more because it includes a socket, cover plate and key lock: $120 against $80 at 90mm and $140 against $110 at 140mm, per unit ex GST and freight, as at October 2026. Ten 90mm bollards is $800 fixed or $1,200 removable, a difference of $400.
Labour is the bigger number. General Australian cost guides put contractor installation at roughly $250–$700 per bollard, which for ten bollards is about $2,500–$7,000. That is an industry guide figure for bollards generally, not split by fixing. Surface-mount is usually the least labour, and a new pour is often cheapest when concrete is going in anyway. See the bollard cost guide.
Choosing
When each fixing is the right one
Surface-mount suits
- Positions that never open: row ends, walkway edges, meters, door frontages.
- An existing sound slab where you want the least drilling.
- Tight budgets, where installation labour matters most.
In-ground suits
- Gaps that open for deliveries, residents or emergency access.
- Reserved bays, with a storage holder for the removed bollard.
- A new pour, where the socket can be cast in.
Pricing a job like this? Send sizes, quantities and your postcode.
Request a quoteStrength
Is in-ground stronger?
Suppliers often say surface-mount is quicker and in-ground is stronger. The honest answer is that strength comes from a tested product on an engineered foundation, not from the fixing method alone. SafeWise supplies no in-ground fixed bollard and no crash-rated product. Our fixed and removable bollards are 3mm wall carbon steel that mark, delineate and deter at parking speed, and neither fixing makes them a barrier.
If the risk is a vehicle driven at speed or on purpose, you need a security engineer and a rated, tested system. See safety vs crash-rated bollards.
SafeWise products
Which SafeWise bollards use each fixing
Per unit, ex GST and freight, as at October 2026.
| Product | Fixing | Detail | From | Status |
|---|---|---|---|---|
| Fixed 90mm, SW-FB90 | Surface-mount | Ø89, 900mm tall | $80 | Pre-order |
| Fixed 140mm, SW-FB140 | Surface-mount | Ø140, 1300mm tall | $110 | Pre-order |
| Removable 90mm, SW-RB90 | In-ground socket | Ø90, 900mm above ground | $120 | Pre-order |
| Removable 140mm, SW-RB140 | In-ground socket | Ø140, 900mm above ground | $140 | Pre-order |
| Storage holder, SW-SL90 / SW-SL140 | Bolt-down floor fitting | Parks a removed bollard, not a socket | $25 / $35 | In stock |
Fixed bollards have a base plate: Ø225 × 8mm on the 90mm and Ø250 × 8mm on the 140mm. Removable bollards come with an in-ground socket included (Ø102 × 4mm on the 90mm, Ø152 × 4mm on the 140mm) and a cover plate (Ø187 × 6mm and Ø214 × 6mm).
The four bollards are pre-order for the next container, with the expected landing date on your written quote. Factory production typically takes 15–20 days, plus sea freight and customs clearance. Nothing is committed until you confirm the quote, and there is no hard minimum order. Anchors are not included. Request a quote.
FAQs
Surface-mount vs in-ground: common questions
What is the difference between surface-mount and in-ground bollards?
A surface-mount bollard is bolted to the top of the slab through its base plate. An in-ground bollard is set into the slab, either cast into new concrete or core drilled into an existing one. SafeWise fixed bollards are surface-mount, and SafeWise removable bollards sit in an in-ground socket supplied with the bollard.
Is an in-ground bollard stronger than a surface-mount bollard?
Not by default. Strength depends on a tested product on an engineered foundation, not on whether it is bolted or buried. No SafeWise bollard, surface-mount or in-ground, is impact-tested or certified to hostile-vehicle standards such as PAS 68 or IWA 14. They mark, delineate and deter at parking speed.
Which is cheaper to install, surface-mount or in-ground?
Surface-mount is usually the least labour: drill the base plate holes and fix with M10 anchors. In-ground needs a core drill (about 130mm for the 90mm socket, 220 to 225mm for the 140mm) or a new pour. General guides put contractor installation at about $250 to $700 per bollard, so labour often outweighs the product price.
Can I convert a surface-mount bollard to in-ground later?
Not as a swap. A SafeWise fixed bollard has a base plate and is made to be bolted down, and a removable bollard needs its own in-ground socket set into the slab. Changing method means removing the bollard and core drilling or casting a socket. Decide on access before you order.
Can I use a surface-mount bollard on asphalt or pavers?
Not on its own. Concrete anchors don't hold in asphalt, pavers, gravel or soil, so the base plate needs a concrete footing or plinth underneath, sized by an engineer or experienced installer. If you are pouring new concrete anyway, a cast-in removable bollard is the alternative.
Are the storage holders in-ground sockets?
No. SafeWise storage holders (SW-SL90 at $25 and SW-SL140 at $35, in stock) are bolt-down floor fittings that park a removed bollard. They are not the in-ground socket, which comes with each removable bollard and is set into the slab.
Related products
Bollards and wheel stops for the job
Removable bollards
90mm & 140mm, in-ground socket, key lock
from $120 per unit, ex GST & freight
Bollard storage holders
Bolt-down, suits removable bollards
from $25 per unit, ex GST & freight
Bollards and wheel stops are pre-order for the next container: factory production typically takes 15–20 days, plus sea freight and customs clearance. The expected landing date is on your written quote. Storage holders are in stock now.
Choosing a fixing for your bollards?
Send us the quantity, the slab type and your delivery postcode. We aim to reply within one business day, and quotes are in writing.
Related guides
Keep reading
- Removable vs fixed bollardsLift-out or permanent
- Install fixed bollardsAnchors, steps and common mistakes
- Install removable bollardsCore drilling or casting in the socket
- Bollard cost in AustraliaSupply and install price ranges
- 90mm vs 140mm bollardsWhich size suits the job
- Bollard spacingClear gaps, centres and setbacks
- Safety vs crash-rated bollardsWhat the ratings mean
- Car park bollardsWhere they go and what to order