Concrete Slab vs Paver Base for a Shed: Which Is Better?

Looking for a Cheaper Shed Base? You're Not Alone

Most shed buyers land at the same fork in the road: pour a concrete slab, or lay pavers on a compacted base? Pavers often look like the cheaper, easier choice on paper — and sometimes they are. But for most shed owners in Brisbane and South East Queensland, concrete ends up being the better long-term decision.

This guide walks through both options honestly. We'll cover cost, durability, drainage, load capacity, warranty implications, and the real-world situations where pavers genuinely do make sense. By the end you'll know exactly which base is right for your shed — without the sales pitch.

The Two Options Explained

Option 1: A Concrete Slab

A concrete shed slab is a monolithic pour — typically 75mm to 100mm thick — reinforced with steel mesh (usually SL72 or SL82) over a prepared gravel base. The slab is poured in one go, screeded level, floated, and finished with a broom texture. Once it cures, you have a single solid surface that will sit under your shed for decades.

Typical build-up for a standard shed slab:

• Excavated and levelled ground
• 75–100mm of compacted road base or crushed rock
• Plastic vapour barrier (for enclosed workshops)
• SL72 or SL82 steel mesh on bar chairs
• 100mm of 25–32 MPa concrete, broom finish

For more detail on slab thickness, see our guide on how thick a shed slab should be.

Option 2: A Paver Base

A paver base uses concrete or clay pavers laid on a bed of compacted road base and bedding sand. The pavers butt up against each other with fine sand or jointing compound between them. The whole area is held together by edge restraints — either concrete haunching, plastic edging, or timber.

Typical build-up for a paver shed base:

• Excavated and levelled ground
• Geotextile fabric to stop weed growth
• 75–100mm of compacted road base
• 25–30mm of bedding sand
• Pavers laid tight, tamped into position
• Jointing sand swept into the gaps
• Edge restraints around the perimeter

Both systems work. The differences are in how long they last, what they cost over that lifespan, and how the shed itself behaves on top.

Cost Comparison

On the surface pavers look cheap — but the maths depends on whether you're doing it yourself and whether you count all the hidden extras.

Base Type	DIY Cost (per m²)	Professional Install (per m²)
Paver base	$80 – $120	$150 – $200
Concrete slab	Not recommended DIY	$85 – $120

All prices are indicative starting-from guides only. Final pricing depends on site conditions, access, soil type, and specific requirements.

Hidden Costs of a Paver Base

Paver quotes often leave out items that add up quickly:

• Edge restraints: plastic edging, timber, or concrete haunching — often $15–$25 per linear metre
• Geotextile fabric: $3–$6 per m² to stop weeds and stop bedding sand migrating
• Bedding and jointing sand: $8–$15 per m² depending on depth
• Compaction plate hire: $60–$100 per day if you're doing it yourself
• Wastage and cuts: add 10% to paver quantities for edge cuts
• Maintenance over time: relevelling, weed control, jointing sand top-ups

Once you add it all up, a professionally laid paver base is often more expensive than a concrete slab of the same size — and that's before you factor in how long each lasts. For a full breakdown of concrete costs, see shed slab cost in Brisbane.

Durability and Longevity

Concrete Slab

A properly built shed slab — 100mm thick, mesh reinforced, on a good compacted base — will realistically last 40 years or more with almost no maintenance. You might need to reseal it once a decade if it's an enclosed workshop, and that's about it. Concrete doesn't move, doesn't sprout weeds, and doesn't care about termites.

Paver Base

Pavers typically give you 20–30 years before they need significant work. Long before that, most paver bases will need:

• Weed treatment between joints (ongoing, every 1–2 years)
• Jointing sand top-ups after heavy rain
• Relevelling of sunken pavers (every 5–10 years)
• Edge restraint replacement as timber rots or plastic cracks
• Occasional paver replacement after cracking

Pavers don't fail catastrophically — they just get progressively messier unless you maintain them. For a shed floor that you want to forget about, concrete is simply less hassle.

Load Capacity

Concrete Wins for Heavy Loads

A 100mm reinforced concrete slab can handle:

• A car or light trailer driving on and off (with suitable edge thickening)
• Heavy workshop benches, lathes, drill presses
• Tonne bags of feed, timber stacks, ride-on mowers
• A 4WD or ute parked permanently

The slab spreads the load across its entire footprint. Concentrated point loads — like a jack stand or a tool chest leg — don't cause long-term problems.

Pavers Shift Under Heavy Use

Pavers rely on the compacted base and the friction between joints to stay put. Under heavy or repeated loads they will:

• Sink at the edges where load is concentrated
• Spread apart at the joints over time
• Crack under point loads from jacks or heavy furniture legs
• Lift or rotate if vehicles drive on them regularly

For a light-duty garden shed storing a mower and some boxes, pavers will hold up fine. For a workshop, a garage, or anything where vehicles or heavy machinery are involved, concrete is the right call.

Drainage

Pavers Drain Between the Gaps

Water passes through paver joints and drains into the base below. For an open-sided structure or a hobby shed in a wet spot, this can be a real advantage — no pooling, no slope required, no drainage channel needed.

The downside: any moisture coming up through the base reaches the inside of the shed, and joints can pull grit and debris up with them over time.

Concrete Needs a Slope

A concrete slab is waterproof, so you need to build in a fall (typically 1:100 away from the shed, or to a drain point) so water runs off rather than ponds. For most shed locations this is straightforward — your concreter will allow for it during the pour.

Inside an enclosed shed, a sealed concrete slab with a vapour barrier keeps moisture out completely, which is far better for tools, rust-prone equipment, and stored items.

Staying Level Over Time

Concrete: Stays Flat

A concrete slab is one piece. Unless the ground underneath subsides dramatically, it stays exactly as level as the day it was poured. Shed doors keep swinging true. Shelves stay vertical. Workbenches don't wobble.

Pavers: Can Sink and Shift

Individual pavers can sink as the bedding sand compacts or washes out. In Brisbane's reactive clay soils, movement is inevitable over time. Five years in, you'll often find a few pavers sitting 5–10mm lower than their neighbours. For a shed that houses a workshop or stored items on shelving, this matters.

Relaying sunken pavers is a weekend job every few years. It's not catastrophic, just annoying. See our guide on what base is needed under a concrete slab for more on base preparation.

Installation Time

Base Type	Install Time	Wait Before Shed Build
Concrete slab	1–2 days	7 days (walking); 28 days (full cure)
Paver base (DIY)	2–5 days	Ready immediately
Paver base (professional)	1–3 days	Ready immediately

Pavers win on speed-to-use — you can start building the shed the same day. Concrete is a faster install for a professional crew, but needs curing time before you can anchor a heavy shed to it.

Shed Manufacturer Warranties

This is the one most people miss — and it matters.

The majority of major shed manufacturers in Australia (Fair Dinkum, Ranbuild, Stratco, Sheds n Homes, Spanbilt and others) specify a concrete slab or an engineered pad as the required foundation. Installing on pavers often:

• Voids the structural warranty on the shed
• Makes anchoring the shed frame much harder (dynabolts work into concrete, not into a paver joint)
• Isn't accepted for wind-rating certification in higher-wind zones

Before you commit to a paver base, read the installation manual for your specific shed and check what the manufacturer requires. On a $5,000–$15,000 shed, saving a few hundred dollars on the base isn't worth voiding the warranty.

When Pavers Do Make Sense

There are genuine situations where pavers are the right choice:

• Light-duty garden sheds: a 2.4m x 2.4m tool shed holding a mower and rake — pavers are fine
• Rental properties where you want reversibility: pavers can be lifted and removed with no trace, leaving the yard as you found it
• You already have matching pavers in the yard: visual continuity matters for small backyards, and extending existing paving looks better than a grey concrete square
• Temporary shed placement: if you might move or remove the shed within 5–10 years
• Tight access where a concrete truck can't reach: though pump trucks handle most of these sites
• Council restrictions on permanent structures: in some overlays a non-permanent base avoids triggering a DA

When Concrete Is the Right Choice

For the majority of shed projects, concrete wins. It's the right base if:

• The shed is 6m x 4m or larger — bigger sheds need a monolithic base
• You'll store or work on vehicles, ride-on mowers, or trailers
• The shed is a workshop with heavy tools, benches, or machinery
• You want the shed to last 30+ years without thinking about the base
• The shed has a manufacturer warranty you want to keep valid
• The site is in a low spot where water pooling would be a problem
• You're in a high wind zone where anchoring is critical
• You plan to insulate or line out the shed as a usable space

For most Brisbane shed owners building 6x3m, 6x6m, or larger sheds with any real use case beyond light storage, concrete is the clear winner. See our shed slabs service page for details on what we build.

Concrete vs Pavers: At a Glance

Factor	Concrete Slab	Paver Base
Upfront cost	$85–$120/m² installed	$80–$200/m² (DIY to pro)
Lifespan	40+ years	20–30 years
Maintenance	Minimal (occasional seal)	Weed control, relevelling, sand top-ups
Load capacity	Heavy (vehicles, workshops)	Light (storage only)
Drainage	Slope required	Drains through joints
Level over time	Stays flat	Can sink and shift
Anchoring	Easy (dynabolts)	Difficult
Shed warranty	Meets manufacturer specs	Often voids warranty
Reversibility	Permanent	Can be removed
Install time	1–2 days + curing	2–5 days, ready immediately

The Verdict

For the vast majority of shed applications in Brisbane and South East Queensland, concrete is the better base. It costs roughly the same as a professionally laid paver base, lasts significantly longer, requires almost no maintenance, handles heavier loads, and keeps your shed's manufacturer warranty intact.

Pavers are a real option for small, light-duty garden sheds, rental properties, or yards where matching existing paving matters for looks. Outside of those cases, concrete wins on almost every measure that matters over the life of a shed.

If you're deciding on a base for a new shed in Brisbane, Logan, Ipswich, or the wider SEQ region, the maths usually points to concrete — especially once you add up the long-term maintenance on pavers.

Ready to Get a Quote for Your Shed Slab?

We pour shed slabs and small concrete pads across Brisbane and South East Queensland. If you've weighed up the options and concrete is the right call for your shed, we can give you an honest fixed quote based on your site and shed size.

Get started:

• See our pricing guide for typical shed slab costs
• Read up on shed slab specifications
• Check concrete pad options for smaller projects
• Contact us for a free quote — tell us your shed size and location