Exposed aggregate has been a favourite on Australian driveways for decades. Resin bound is newer here, but it is quickly becoming a popular alternative. Both use natural stone to create a decorative finish, yet they are built in completely different ways and behave differently once they are down. As a supplier of resin bound materials we obviously have a view, but this page aims to give you an honest comparison so you can pick the right surface for your site.
The Short Answer
Choose resin bound if you want a smooth, seamless, permeable finish with a wide colour choice, or you want to resurface existing concrete without ripping it out. Choose exposed aggregate if you are pouring a brand-new structural slab anyway and prefer a rugged, traditional texture.
Side-by-Side Comparison
| Factor | Resin bound | Exposed aggregate |
|---|---|---|
| Appearance | Seamless, even carpet of stone. Wide choice of blended colours. | Stones partly exposed in a concrete matrix. More muted, with visible cement between stones. |
| Permeability | Permeable - water drains through the surface to the base below. | Generally non-permeable. Water runs off to drains or the edges. |
| Installation | Resin and dry stone mixed on site, troweled onto a sound base. | Concrete poured with aggregate, then the top layer washed or treated to reveal the stone. |
| Surface feel | Smooth, level, slightly textured underfoot. No loose stones. | Rougher, more textured grip from exposed stone tops. |
| Maintenance | Sweep and rinse. Occasional pressure clean on a suitable setting. | Sweep and wash. May need periodic re-sealing. |
| Overlay on existing concrete | Can often be laid over sound existing concrete without demolition. | Usually requires removing and re-pouring the slab. |
| Heavy structural load | Relies on the base underneath for strength. | Is itself a structural concrete slab. |
Appearance
Resin bound coats every stone in clear resin and trowels them into a tight, level surface. The result is a continuous carpet of stone with no visible cement, so the colour of the aggregate is what you see. Blends can mix several stones for warmer, cooler or more modern tones - you can compare them on our Vuba Stone blends page.
Exposed aggregate shows the tops of stones set into concrete. The cement paste between stones is part of the look, which gives a more rustic, textured finish. Colour choice is shaped by locally available aggregates and the concrete mix.
Permeability and Drainage
Resin bound has small voids between the coated stones, allowing water to pass through to the base below. This can reduce puddling and surface runoff. Exposed aggregate is concrete, so water runs across it to drains and garden edges. Whichever you choose, the base and falls still need to be designed to manage water sensibly.
Installation
Exposed aggregate is poured as part of a concrete slab. The surface is then treated and washed at the right moment to reveal the stone, which makes timing critical and the process weather-dependent. Once the slab is poured, it is the finished surface.
Resin bound is a surface layer laid onto a sound base. Resin and kiln-dried stone are mixed on site, spread and troweled. Because it sits on top of a base, it is often used to upgrade existing concrete - our how to lay resin bound guide walks through each stage.
Surface Feel
Underfoot, resin bound feels smooth and level with a fine texture, and there are no loose stones to kick around. Exposed aggregate is noticeably rougher, which some people like for grip and others find harsh on bare feet. For pool areas and alfresco spaces the feel can be a deciding factor. Slip ratings for specific finishes: [CONFIRM: slip resistance rating for Vuba resin bound finishes]
Maintenance
Both surfaces are low maintenance compared with loose gravel or many paving options. Resin bound benefits from regular sweeping so debris does not settle into the voids, plus an occasional wash. Exposed aggregate is swept and washed, and many owners re-seal it periodically to keep it looking fresh. Neither is maintenance-free.
Overlays on Existing Concrete
This is where the two differ most. If you already have a plain or tired concrete driveway that is structurally sound, resin bound can often be laid straight over it after preparation - no jackhammers, no skip bins full of rubble. Switching to exposed aggregate usually means demolishing and re-pouring. The Vuba Stone overlay system is designed for exactly this situation, and our driveway resurfacing materials page explains the options in Perth.
An existing exposed aggregate slab can also be a candidate for a resin bound overlay if it is in good condition. Loose stones, cracks and movement need to be addressed first.
Cost
Costs vary widely with site conditions, base work and finish, so we do not quote general figures here. For resin bound materials, see our resin bound driveway cost guide and our Perth materials page to order what you need.
Making the Call
If you are leaning towards resin bound, you can order resin, stone and tools from the Vuba Surfaces WA shop. Tradespeople who want to offer both finishes to clients can learn the resin bound side through our installer training.
Frequently Asked Questions
Is resin bound better than exposed aggregate?
Neither is better in every situation. Resin bound offers a smoother, permeable, more colourful finish and can overlay existing concrete. Exposed aggregate is a structural concrete slab with a rugged texture. The right choice depends on your base, look and budget.
Can resin bound go over exposed aggregate?
Often, yes - if the existing surface is sound, stable and suitably prepared. Loose stones, cracks and movement must be fixed first. Ask us about your specific surface before ordering.
Which is more slip resistant?
Both can offer good grip depending on the stone, finish and any additives. Slip resistance varies by product and installation, so check the specific system and ask for test data where it matters.
Which lets water drain through?
Resin bound is permeable, so water passes through to the base. Exposed aggregate concrete is generally not permeable and sheds water across its surface.
Where can I see resin bound colours?
Browse the 16 Vuba Stone blends online, or view completed work on the Vuba Surfaces WA showcase page.