If you’re weighing up SmartBund vs Concrete Bund for on-site diesel or chemical storage, here’s the short answer: SmartBund™ costs less upfront, takes up less space, and goes in within a day. A poured concrete bund can still make sense on some sites, but it comes with real trade-offs in cost, footprint and install time that are worth understanding before you commit.
Bunding isn’t optional once you’re storing diesel or chemicals at any real volume. The only question is which containment method actually suits your site, your budget and your timeline.
Why Bunding Is Non-Negotiable
Under AS1940:2017, a bunded tank needs secondary containment sized to at least 110% of the inner tank’s capacity. That way, if the tank ever leaks or ruptures, the bund catches the full contents before it reaches your stormwater system, your soil or a waterway nearby.
You’ve got two main ways to achieve that: build a concrete bund around a standard tank, or choose a self-bunded tank like SmartBund™, which has the bund built into the tank itself. Both meet the same containment requirement. What differs is everything else — cost, space, timeline and long-term flexibility.
What a Concrete Bund Actually Costs to Build
A poured concrete bund isn’t just a wall. It typically involves excavation or formwork, steel reinforcement, a poured and cured concrete floor and walls, a waterproof or chemical-resistant coating, and often an engineer’s sign-off before council or insurance will accept it.
Add those steps together, and even a modest commercial bund can run into several thousand dollars in civil works alone — before you’ve bought a tank to put inside it. Larger sites, tighter access, or higher chemical-resistance requirements push that cost higher again. That’s on top of ongoing maintenance: concrete cracks over time, coatings need reapplying, and every crack is a compliance risk you’re now responsible for spotting.
The Hidden Cost: Land You Can’t Use for Anything Else
A concrete bund permanently claims its footprint. Once poured, that patch of yard is a bund — not parking, not stacking space, not anywhere near flexible if your site layout changes down the track. On a tight metro depot or a working farm shed, that’s real cost even if it never shows up on an invoice.
What SmartBund™ Replaces That Cost With
SmartBund™ builds the 110% containment bund into the tank’s own moulded structure. There’s no formwork, no curing time and no separate concrete pour — the containment ships with the tank, ready to install.
Here’s what that looks like across the diesel-eligible range, factory-direct — every price already includes the bund, because the containment isn’t a separate build. It’s the whole tank.
| Model | Capacity | Price (Basic, Bund Included) | Footprint |
|---|---|---|---|
| SB400 | 400L | From $2,375 | 900mm x 1,015mm |
| SB700 | 700L | From $3,575 | 900mm x 1,965mm |
| SB1250 | 1,250L | From $4,350 | 1,250mm x 1,550mm |
| SB1500 | 1,500L | From $5,250 | 1,250mm x 2,050mm |
| SB2500 | 2,500L | From $6,350 | 1,600mm x 2,050mm |
| SB3000 | 3,000L | From $7,250 | 1,800mm x 1,850mm |
| SB5000 | 5,000L | From $8,950 | 1,980mm x 2,480mm |
| SB10000 | 10,000L | From $11,250 | 2,700mm x 2,350mm |
There’s no separate containment line item to add anywhere in that range. The bund is built in at every capacity, from the compact SB400 through to the SB10000 — the largest self-bunded diesel model allowed under AS1940:2017.
SmartBund vs Concrete Bund: Head-to-Head Comparison
| Factor | SmartBund™ (Self-Bunded) | Poured Concrete Bund |
|---|---|---|
| Upfront cost | From $2,375 (SB400) – $11,250 (SB10000), bund included | Tank cost, plus several thousand dollars or more in civil works |
| Footprint | Matches the tank’s own dimensions – no separate bund walls | Tank footprint plus bund walls and access apron (often 30–50% larger) |
| Installation timeline | Delivered ready to position – often same-day install | 2–4 weeks including formwork, pour, curing and sign-off |
| Containment standard | Built-in bund meets AS1940:2017’s 110% containment requirement | Meets AS1940:2017 if correctly engineered and certified |
| Portability | Can be relocated if site needs change | Fixed in place permanently once poured |
| Ongoing maintenance | Minimal – UV-stabilised polyethylene, no coating to reapply | Coating and crack inspection required over the tank’s life |
The table makes the trade-off clear: concrete wins on nothing except, arguably, a sense of permanence. Everywhere else — cost, footprint, install speed, maintenance — SmartBund™ comes out ahead for most commercial and industrial sites.
Space Savings on Tighter Sites
Footprint matters most on metro depots, construction sites and smaller farm sheds, where every square metre of yard is already doing a job. A concrete bund needs the tank’s footprint, plus the bund walls, plus an apron for access and inspection. That easily adds 30–50% to the tank’s footprint alone.
SmartBund’s™ integrated design means the footprint you see in the spec sheet is the footprint you get. An SB3000, for example, sits in an 1,800mm x 1,850mm space — no bund walls eating into the yard around it.
Installation Timeline: Days vs Weeks
A concrete bund typically needs excavation or formwork, a concrete pour, a curing period of several days to a week depending on conditions, then a coating application and its own cure time. Add council or engineering sign-off, and you’re often looking at two to four weeks before the tank can even go in.
SmartBund™ tanks arrive factory-direct, fully bunded and ready to position. Most sites have the tank in place and connected the same day it’s delivered — a real advantage when you need diesel storage running before a job starts, not after.
When Concrete Still Makes Sense
Concrete bunding isn’t obsolete. Some sites already have an existing bunded slab from a previous installation, which makes reusing it more cost-effective than starting fresh. Others run multiple tanks that share one large bund, spreading the concrete cost across more storage capacity than a single self-bunded tank would offer.
If your site falls into either category, it’s worth talking the numbers through before deciding. Contact our team with your site details, and we’ll help you work out whether SmartBund™ or a shared concrete bund suits your setup better.
Frequently Asked Questions: SmartBund vs Concrete Bund
Does SmartBund™ meet the same containment standard as a concrete bund?
Yes. Both need to meet AS1940:2017’s 110% containment requirement. SmartBund’s™ integrated bund achieves the same containment capacity as a correctly built concrete bund, just without the separate construction step.
Is a concrete bund ever cheaper than SmartBund™?
It can be, if you’re bunding several tanks together on one large site and already have a suitable slab. For a single tank, SmartBund™ is almost always the lower-cost option once civil works are factored in.
Can I move a SmartBund™ tank later if my site layout changes?
Yes. Because the bund is part of the tank rather than fixed to the ground, a SmartBund™ tank can be relocated if your site needs change — something a poured concrete bund can’t offer.
How long does a concrete bund take to build compared to installing SmartBund™?
A concrete bund typically takes two to four weeks including curing and sign-off. A SmartBund™ tank usually goes in on delivery day.
Do I still need council approval with a SmartBund™ tank?
Requirements vary by council and application, so check with your local council before installing — particularly for larger volumes or sites near sensitive waterways.
Weighing up SmartBund vs Concrete Bund for your site? Browse the full SmartBund™ range or call 1300 826 532 to talk through sizing, footprint and delivery for your address.