Colour is usually the decision that takes longest when choosing an exposed aggregate driveway, and for good reason: it is the part of the job that stays in view every day. The good news is that the range is wide. The key thing to understand is that the finished colour comes from three layers working together, not from a single swatch.
Where the colour actually comes from
An exposed aggregate driveway is a concrete slab with decorative stone in the mix. After the pour, the top film of cement is washed away so the stones show at the surface. That means the colour you see is made up of:
- The stone. This does most of the work. The blend of quarried stone or river pebble sets the dominant tone.
- The cement between the stones. Standard grey cement reads cool and neutral. Oxide pigment can tint it charcoal, buff or other tones to deepen or warm the overall look.
- The sealer. Sealers are typically applied after the concrete has cured. A film sealer tends to give a richer, slightly wet look, while a penetrating sealer keeps the surface closer to its natural dry colour.
Change any one of the three and the same stone blend can look noticeably different, which is why comparing photos online only gets you part of the way.
The popular exposed aggregate colours
Stone names and availability vary between suppliers, but most blends offered in Melbourne fall into a handful of colour families.
Salt and pepper
A mix of pale and dark stones that produces a speckled grey surface. It is one of the most searched and most specified blends because it sits comfortably against brick, render and weatherboard alike. Its mixed tone also disguises everyday dirt well, which suits busy family driveways.
Charcoal and black
Dark basalt style blends, often paired with charcoal oxide in the cement, give a bold, modern finish that frames light coloured houses sharply. Dark surfaces absorb more heat in a Melbourne summer and can show pale dust and dried leaves, so they tend to suit homeowners who like a crisp look and do not mind the occasional sweep.
Whites and creams
Quartz and pale stone blends produce a bright, clean surface that stays cooler underfoot. Light finishes can suit period homes and coastal style designs, but they show oil drips and tyre marks more readily than mid tones. These blends often rely on imported stone, which generally sits toward the upper end of the price range.
Browns, golds and tans
Warm blends with ochre, honey and tan stones soften a driveway and pair well with sandstone, red brick and timber. A buff oxide in the cement is sometimes used to lift the warmth further.
River pebble and multicoloured blends
Rounded pebbles in mixed tones give a natural, textured look. Because every stone is slightly different, these blends are among the most forgiving for hiding marks, and they tend to age gracefully.
Choosing a colour that suits a Melbourne home
A few practical points help narrow the field:
- Look at the house, not the brochure. Hold samples against the garage door, fence, brick or render in natural daylight. A colour that looks right indoors often reads lighter outside.
- Think about trees. Many streets in the leafy eastern suburbs carry heavy leaf drop from gums and deciduous trees. Tannins and fallen leaves can stain very light surfaces, and dark ones show pale debris, so a mid toned blend often suits tree lined blocks.
- Consider summer heat. Dark driveways warm up more in direct sun. On a north facing block where children or pets use the driveway, a lighter or mid blend can be more comfortable.
- Match the rest of the property. If paths, a porch or an alfresco area are also being done, choosing one blend across all of them usually looks more cohesive than mixing finishes.
- Be realistic about matching old work. Weathered exposed aggregate has years of sun and wear in it, and quarried stone varies between batches, so an exact match to an existing path is rarely achievable. Pouring to a clean joint line tends to look better than a patch.
If a solid colour appeals more than visible stone, a coloured concrete driveway with full depth oxide is the alternative worth comparing.
Does the colour change over time?
Some change is normal. Ultraviolet exposure gradually softens the sealer’s sheen, and the surface can look duller or lighter as it wears. The stones themselves are naturally coloured and hold their tone well. Common practice in Australia is to reseal exposed aggregate every few years depending on sun and traffic, which restores much of the depth of colour. The exposed aggregate driveways page covers sealer options in more detail.
Does colour affect the price?
It can. Local quarried blends generally cost less than imported quartz or specialty pebble, and adding oxide to the cement increases the cost of the mix. As a guide, exposed aggregate driveways in Melbourne sit in a range of around $130 to $185 per m², supplied and laid, with stone choice being one of the factors that moves a quote within that range. Prices may vary with site conditions and variations. Plain and coloured concrete comparisons are laid out in the cost guide.
Making the final choice
The most reliable way to choose is to see real stone samples on site, against your own house, in daylight. Ask to see the blend both dry and wet, since a sealed surface looks closer to the wet sample, and ask which sealer the colour was photographed with. When you are ready to compare blends and pricing for your block, book a free site measure.
Planning a driveway? See current Melbourne prices or book a free site measure.