When building a new driveway, patio, or pool surround in Perth, the two most popular hardscape choices are exposed aggregate decorative concrete and interlocking brick pavers. Both offer distinct aesthetic and functional advantages, but they perform very differently under Perth's harsh summer sun, heavy vehicle loads, and shifting sandy subgrades.
This detailed comparison examines real 2026 per-square-metre installation costs in Perth, maintenance demands, weed prevention, ground settling risks, and repairability.
Cost Per Square Metre Comparison (Perth 2026 Rates)
Both surfaces sit in a comparable price range when fully installed with professional earthworks, base preparation, and sealing:
| Feature / Metric | Exposed Aggregate Concrete | Interlocking Brick Pavers | Verdict / Winner |
|---|---|---|---|
| Supply & Install Cost | $120 – $185 / m² | $95 – $170 / m² | Brick paving is slightly cheaper for standard formats; premium large-format pavers match aggregate |
| Typical 60m² Driveway | $7,200 – $11,100 | $5,700 – $10,200 | Paving saves ~$1,500 on basic budgets |
| Base Preparation | 100mm compacted roadbase + SL72 steel mesh | 100mm compacted roadbase + 30mm blue metal dust screed | Tie (both require heavy compaction in Perth sand) |
| Weed Resistance | 100% Seamless — no joints for weeds to sprout | Joint sand can harbor weeds if not sealed or swept with polymeric sand | Exposed Aggregate |
| Stain & Oil Resistance | Requires high-gloss or matte penetrating acrylic seal every 2–3 yrs | Individual stained pavers can be lifted, flipped, or replaced in 5 minutes | Brick Pavers for easy repairs |
| Subsurface Repairs (Pipes/Cables) | Must be saw-cut and patched (visible patch seam remains forever) | Lift pavers, dig trench, repair pipe, re-lay and re-sand (zero visible repair mark) | Brick Pavers |
| Surface Heat in 40°C Sun | Medium to high (depends on aggregate pebble colour choice) | Medium (terracotta/clay stays cooler; dark charcoal absorbs heat) | Tie (colour dependent) |
| Lifespan | 30+ years | 30+ years | Tie |
Exposed Aggregate: Pros & Cons in Perth
Exposed aggregate is made by pouring a structural concrete slab embedded with decorative natural stones (such as basalt, quartz, or river pebbles), followed by pressure washing the surface slurry to expose the textured pebbles before sealing.
- Advantages: Completely seamless finish with zero weed growth; modern high-end architectural appeal; superior skid and slip resistance on sloping driveways; will not sag or develop individual wheel ruts under heavy 4WDs.
- Disadvantages: If tree roots or major ground settlement cause a crack, repairing concrete is difficult and leaves an obvious line; expensive to cut through for retrofitting underground reticulation or NBN conduits.
Brick Paving: Pros & Cons in Perth
Interlocking concrete and clay pavers have been Perth's traditional driveway and path surface for decades.
- Advantages: Exceptional flexibility on reactive sandy soils; simple to lift and re-lay if pipes leak underneath; wide variety of laying patterns (Herringbone, Stretcher Bond, Basketweave); permeable joint options assist with onsite stormwater infiltration.
- Disadvantages: Regular maintenance needed to sweep polymeric locking sand into joints; ants and weeds can push through neglected sand joints; sub-base must be vibratory-plate compacted to 100% density or vehicle ruts will appear.
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