Four finishes cover almost every concrete driveway: broom, exposed aggregate, coloured and stamped. They cost different amounts, grip differently underfoot and age differently, but structurally they are the same driveway — the finish is the top few millimetres of a slab whose lifespan was decided by its base and its reinforcement.
Here is how they actually compare, and which ones suit the steep coastal sections common across Waiheke.
How the four compare
The differences that matter are cost, traction and how much attention each needs to keep looking right.
| Finish | Look | Relative cost | Wet grip | Upkeep |
|---|---|---|---|---|
| Broom | Plain, practical grey | Lowest | Good | Minimal |
| Exposed aggregate | Natural stone texture | Mid to high | Excellent | Reseal every few years |
| Coloured | Tinted to suit the house | Moderate addition | Unchanged by pigment | Reseal to hold tone |
| Stamped | Patterned stone or slate | Highest | Depends on sealer | Resealing is a commitment |
Concrete brushed with a broom while still workable, leaving fine parallel ridges. The most common driveway finish in the country and, for most sites, the sensible default.
Broom finish
It is the cheapest option, it grips reliably when wet, and it hides dirt and wear reasonably well. It will not win any design awards, but on a working driveway where budget matters it is hard to argue against.
- Broom: lowest cost, good wet grip, hides wear, plain appearance.
- Exposed aggregate: mid to high cost, best wet grip, hides wear very well, natural look.
- Coloured: moderate added cost, texture unchanged, needs resealing to hold tone.
Exposed aggregate
The surface paste is washed back while the concrete is still green, exposing the stone in the mix. The result is a textured, decorative surface with genuine traction.
- Stamped: highest cost, grip depends on pattern and sealer, most visual control.
- How steep is the drive? The steeper it is, the more traction should outweigh appearance.
- How much sun does it get? Dark colours become genuinely hot underfoot in island summer.
Coloured concrete
This is the most popular decorative finish on the island and the reason is practical rather than aesthetic. The raised stone grips on a grade in a way a flat surface cannot, and it disguises the marks a driveway inevitably collects. It costs more than broom and is worth it on anything sloping.
- Will you reseal it? Coloured and stamped finishes look tired quickly without it.
- How visible is it? A driveway that frames the approach justifies more than a back access does.
- What is the budget? Spending on base and reinforcement always beats spending on finish.
Stamped concrete
Pigment added through the mix, or a hardener worked into the surface during finishing, in a wide range of tones.
- Exposed aggregate with a coloured border — traction where you drive, definition at the edges.
- Broom main area with a stamped apron — budget across the bulk, detail at the entrance.
- Coloured exposed aggregate — pigment through the mix with the stone washed back over it.
Choosing for your site
Colour does not change the texture, so it can be combined with any of the other finishes. Worth knowing that darker tones absorb a great deal of heat in full island sun, which matters for a patio and not at all for a driveway you only drive on.
- Honed bands within a broom field — subtle contrast without losing grip on the driving surface.
- Different finishes for drive and path — the path can afford to be smoother than the driveway.
- Plan transitions before the pour — joints and edges between finishes must be set out deliberately.
- Keep grip where vehicles run — decorative work belongs at the margins on a steep site.
- Match the house, not a photo: island light is bright and flattens colour, so sample on site.
Combining more than one
Patterns pressed into the surface while it is workable, producing the look of laid stone, slate, brick or timber.
Talk it through with us
It gives the most visual control of any finish and costs the most, both in materials and in the skilled labour needed to work the whole area within a short window. It depends on its sealer for appearance and for slip resistance, so resealing is a real commitment rather than an optional extra.