Choosing a driveway surface is one of those decisions that feels straightforward until you start researching — and then the options multiply fast. Exposed aggregate, plain concrete, and pavers each have genuine strengths, and the best choice depends on your budget, your home's style, your local climate, and how much ongoing maintenance you're prepared to do. This guide breaks it all down honestly so you can make a confident call.
Overview of Each Option
Exposed Aggregate Concrete
Exposed aggregate is poured concrete where the top layer of cement paste is washed or brushed away before it fully cures, revealing the decorative stones (aggregate) beneath. The aggregate can be river pebbles, crushed granite, recycled glass, or other materials, giving a textured, natural look. It's one of the most popular driveway finishes in New Zealand, particularly in newer suburban developments.
Plain (Broom-Finished) Concrete
Plain concrete — typically finished with a broom drag for grip — is the workhorse of NZ driveways. It's straightforward to pour, widely available, and gives a clean, neutral appearance. A standard mix for driveways is generally 25–30 MPa, laid at a minimum 100 mm thickness (thicker if heavy vehicles are expected), in line with good practice and BRANZ guidance on residential concrete slabs.
Pavers (Concrete or Clay Brick)
Pavers are individual units — either concrete block, clay brick, or natural stone — laid on a prepared bedding of compacted sand or mortar over a solid base. They offer the most design flexibility and a premium aesthetic. Concrete pavers are the most common in NZ; clay bricks and natural stone are available but at higher cost.
Head-to-Head Comparison
| Criteria | Exposed Aggregate | Plain Concrete | Pavers |
|---|---|---|---|
| Appearance | Textured, decorative, natural | Clean, neutral, functional | High-end, versatile, many styles |
| Durability | Very good — surface resists wear well | Good — can crack over time | Very good — individual units can be replaced |
| Slip resistance | Excellent (textured surface) | Moderate (broom finish helps) | Good (depends on paver profile) |
| Maintenance | Reseal every 3–5 years; occasional weed control at edges | Low — clean and reseal periodically | Moderate — weed/moss in joints, re-sanding needed |
| Repairability | Difficult — patches are visible | Difficult — patches show | Easy — lift and replace individual pavers |
| NZ climate suitability | Excellent — handles freeze-thaw in South Island well | Good — can crack in frost-prone areas without control joints | Good — flexible jointing handles ground movement |
| DIY friendliness | Low — specialist finishing required | Low — concrete work is skilled | Moderate — laying pavers is DIY-possible but base prep is critical |
| Approximate cost (guide only) | Mid–high | Mid | Mid–high to high |
Note: Costs vary significantly by region, site conditions, and finish. Always get at least three quotes from local concreters.
Cost Considerations
As a rough guide only, plain concrete is generally the most affordable of the three options per square metre installed. Exposed aggregate typically costs somewhat more due to the additional labour and skill involved in the wash-off process. Pavers can range widely — concrete block pavers sit in a similar range to exposed aggregate, while natural stone or premium clay brick pavers can cost considerably more.
Don't forget to factor in:
- Sub-base preparation — all three options require a well-compacted, stable base. Cutting corners here leads to cracking and settlement regardless of what surface you choose.
- Drainage — your driveway must direct water away from the house and not onto neighbouring properties. This may require channel drains or careful grading.
- Edging and kerbing — often needed for pavers and exposed aggregate to keep the surface contained.
- Sealing — exposed aggregate in particular benefits from a quality penetrating sealer to protect the surface and enhance colour.
For pavers, Mitre 10 and Bunnings stock a range of concrete block pavers if you're considering a DIY approach, though professional installation is strongly recommended for driveways due to the critical importance of base preparation.
NZ-Specific Considerations
Climate: In the South Island and elevated North Island areas, freeze-thaw cycles can damage concrete if it's not properly mixed and cured. Exposed aggregate and plain concrete should use an appropriate mix design; your concreter should be aware of local conditions. Pavers with sand joints handle slight ground movement better than a monolithic slab.
The NZ Building Code doesn't typically require a building consent for a standard residential driveway, but you should check with your local council — some territorial authorities have rules around impermeable surfaces and stormwater. The MBIE Building Performance website is a good starting point for understanding what triggers consent.
Healthy Homes and rental properties: If you're a landlord, a safe, well-drained driveway contributes to a healthy, accessible property. See Tenancy Services for broader Healthy Homes obligations.
Sealing and colour: If you want to add colour to plain or exposed aggregate concrete, Resene offers concrete stains and sealers suitable for exterior use. Always check the product is rated for driveways and vehicle traffic.
What About DIY?
Be realistic here. Pouring and finishing concrete — especially exposed aggregate — is a skilled trade. Timing the wash-off on exposed aggregate is critical; too early or too late and the finish is ruined. Plain concrete must be poured, screeded, and finished before it goes off, which requires a team and experience. Concrete work is not a forgiving DIY project for beginners.
Paver laying is more DIY-friendly in terms of the surface work, but the sub-base preparation (excavation, compaction, correct falls for drainage) is where most DIY driveways fail. A poorly prepared base leads to sinking, rocking pavers, and pooling water.
For any driveway project, we strongly recommend engaging a qualified local concreter or paving specialist. You can find experienced tradespeople in your area at tradedirectory.co.nz.
Our Recommendation
Choose exposed aggregate if: You want a durable, attractive finish that adds kerb appeal and suits a modern or contemporary home. It's the premium concrete option and holds up well across most NZ conditions. Budget for resealing every few years.
Choose plain concrete if: You want a cost-effective, low-fuss driveway that does the job reliably. It suits functional properties, rentals, or situations where budget is the primary driver. Ensure proper control joints are cut to manage cracking.
Choose pavers if: Aesthetics and design flexibility are top priorities, or if you want the ability to lift and relay sections in future (for example, if there's underground access needed). They suit character homes, high-end renovations, and situations where ground movement is a concern. Be prepared for more ongoing maintenance to keep joints clean and stable.
Whatever you choose, invest in proper sub-base preparation and hire a tradesperson with proven experience in your chosen finish. A well-laid driveway should last decades — a poorly laid one will cost you more in repairs than you saved upfront.
Site Safe
