Driveway Finishes Compared: Broom, Aggregate, Colour, Stamped

Key Takeaways

  • Broom finish is the practical default: cheapest, hard-wearing, and it grips well when wet.
  • Exposed aggregate costs more and grips better again. On a steep Hobart drive it is usually worth the difference.
  • Colour and stamping give the most visual control and need resealing to hold their appearance under Tasmania's strong UV.
  • On any sloping block, avoid a smooth trowelled finish. It photographs beautifully and turns slick the first wet morning.

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 hillside blocks and frosty winter mornings common across Hobart.

How the four compare

The differences that matter are cost, traction and how much attention each needs to keep looking right.

FinishLookRelative costWet gripUpkeep
BroomPlain, practical greyLowestGoodMinimal
Exposed aggregateNatural stone textureMid to highExcellentReseal every few years
ColouredTinted to suit the houseModerate additionUnchanged by pigmentReseal to hold tone
StampedPatterned stone or slateHighestDepends on sealerResealing is a commitment

In short, the further down that table you go, the more you pay for appearance and the more maintenance you take on to keep it.

Broom finish

Concrete brushed with a broom while still workable, leaving fine parallel ridges. It is the most common driveway finish in Australia and, for most sites, the sensible default. It is the cheapest option, it grips reliably when wet, and it hides dirt and wear reasonably well. Run the ridges across the slope rather than down it and it performs well on a frosty Hobart morning too.

  • Cost: the lowest of the four — standard concrete and quick finishing.
  • Grip: good when wet, best with the broom marks running across the fall.
  • Appearance: plain and practical; it will not win design awards.

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 — the most popular decorative driveway finish in Hobart, and for practical rather than aesthetic reasons.

  • Grip: the raised stone bites on a grade in a way a flat surface cannot, including on shaded drives that hold frost.
  • Wear: it disguises the tyre marks, leaf stains and weathering a driveway inevitably collects.
  • Cost: more than broom, and worth it on anything steep.

Coloured concrete

Pigment added through the mix, or a hardener worked into the surface during finishing, in a wide range of tones. Colour does not change the texture, so it can be combined with any of the other finishes.

  • Will you reseal it? Tasmania's strong UV fades an unsealed coloured surface fairly quickly.
  • 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

Patterns pressed into the surface while it is workable, producing the look of laid stone, slate, brick or timber. 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 — a window that shifts with the weather, since concrete stiffens slowly on a cold winter morning and quickly on a warm, windy summer afternoon.

  • Sealer: appearance and slip resistance both depend on it, so use a grit additive.
  • Pattern depth: a deeper texture grips better on a slope than a smooth slate pattern.
  • Commitment: resealing is a real ongoing job rather than an optional extra.

Choosing for your site

Start with the site, not the sample board. On a sloping Hobart block, traction comes first and appearance second.

  • How steep is the drive? The steeper it is, the more traction should outweigh appearance.
  • Does it hold frost or shade? South-facing and tree-shaded drives stay damp and icy longer in winter, so favour aggregate or broom.
  • How much sun does it get? Dark colours become hot underfoot in summer and fade faster under UV.
  • Keep grip where vehicles run — decorative work belongs at the margins on a steep site.
  • Match the house, not a photo: colours read differently in real light, so sample on site.

Combining more than one

Combining finishes often looks better than one finish across a big area, and it lets you spend where it is seen most. The key is planning the layout before the pour, because transitions and joints have to be set out deliberately.

  • 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.
  • Different finishes for drive and path — the path can afford to be smoother than the driveway.

Talk it through with us

The right finish depends on how steep your drive is, how much frost and sun it sees, and how much upkeep you are happy to take on. Tell us about your block and we will recommend a finish that grips first and looks right second — and show you samples in the light at your place.

FAQ

Frequently Asked Questions

A plain broom finish, comfortably. It uses standard concrete with no extra materials and finishing is quick, so you're paying for the slab and little else. Exposed aggregate adds selected stone and the labour of washing back the surface. Colour adds oxide pigment or a colour hardener. Stamping adds both materials and a lot of skilled labour within a tight working window, which is why it sits at the top of the range.

Exposed aggregate. The raised stone gives tyres and shoes real texture to bite into, which counts on Hobart's damp winter mornings and on shaded driveways that hold frost. A broom finish laid across the slope is a close and much cheaper second. Stamped surfaces vary with the pattern and especially the sealer, which can get slippery unless a grit additive is used. Smooth trowelled concrete should never be used on an outdoor slope.

Structurally they're the same — the finish is only the top few millimetres of a slab whose life depends on its base, reinforcement and curing. The difference is how they age. Broom and exposed aggregate hide wear and weathering well. Coloured and stamped finishes rely on their sealer, and Tasmania's strong UV fades an unsealed coloured surface fairly quickly, so they look tired sooner if resealing is skipped and come up well again once it's done.

Yes, and it often looks better than one finish across a big area. Popular combinations are an exposed aggregate driveway with a coloured or stamped border, or a broom-finished main area with a decorative strip at the entry. Combining also lets you spend money where it's seen most. The key is planning the layout before the pour, because the transitions and joints have to be set out deliberately.

Exposed aggregate in most cases. On the steep hillside blocks common around Hobart, traction is the priority and raised stone delivers it best. A broom finish run across the slope rather than down it is a sensible, cheaper second. Colour is fine because pigment doesn't change the texture. Stamped concrete can work with a deeper pattern and a grit-additive sealer, but on a genuinely steep drive we'd want to talk it through before agreeing to it.

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