If you've been comparing driveway surfaces, you've probably seen resin-bound stone sold as "100% permeable" with "no puddles, ever". It's a tempting line — but it isn't a fair one. Whether your driveway drains depends far more on what's underneath the resin than on the resin itself. This guide explains how permeability really works, what Water Sensitive Urban Design (WSUD) means in Victoria, and how approvals run through the Greater Geelong City Council — in plain English, with no over-claiming.
Permeability is a system property, not a surface property
A resin-bound surface is rounded stone — typically rounded aggregate around 2–5 mm — hand-trowelled together with a clear, UV-stable resin, then laid as one seamless wear course. Because the stones are bound at their contact points rather than packed solid, the cured layer has tiny voids between them. Water can pass through that top layer.
But "the top layer lets water through" is not the same as "the driveway drains away". Water that passes through the resin has to go somewhere. If there's a sealed concrete slab a few millimetres below, the water simply sits on that slab, finds the lowest point, and runs off the edge — exactly like any other hard surface. For a driveway to genuinely drain on the spot, every layer beneath the resin has to let water keep moving down into the ground.
The honest version: resin-bound stone is permeable as a material. Your driveway is permeable only when it sits over a permeable, open-graded base that lets water soak away. The resin is one ingredient in that system — not the whole answer.
Why we won't say "100% permeable" or "no puddles"
You'll see those phrases used widely. We avoid them because they're not true in every case, and a driveway is a long-term decision — you deserve the real picture:
- It depends on the base. Over a solid slab, a resin surface is not permeable. The same product on the same day can drain freely or not at all depending only on what's built below it.
- It depends on your soil. Free-draining sandy ground soaks water away quickly; heavy clay — common across parts of Geelong and the Bellarine — drains slowly, so the base has to be designed to hold and release water rather than just dump it straight down.
- It depends on the weather and upkeep. In a heavy Victorian downpour, even a well-built permeable system can shed some surface water briefly, and pores can silt up over years without occasional cleaning. "Drains freely" is honest; "no puddles, ever" is not.
- It depends on approval. How a site is allowed to manage stormwater is a council matter — not something a surface alone decides.
So the claim we stand behind is simple: permeable over a permeable, WSUD-friendly base, designed for your block. No more, no less.
What a genuinely permeable build-up looks like
When the goal is for water to soak away on site, we design the layers underneath to keep water moving. A permeable build-up is roughly:
- Wear course
- Rounded aggregate ~2–5 mm bound with a two-part aliphatic, UV-stable polyurethane resin (~7% by weight of the stone)
- Depth
- ~18 mm minimum for vehicular driveways (~15 mm for pedestrian areas)
- Binder course
- An open-graded, free-draining layer the resin is laid onto — not a sealed slab
- Sub-base
- Open-graded aggregate that stores and releases water, sized for your soil and rainfall
- Sub-grade
- The native ground, plus any agreed outlet, soakage or overflow path to a legal discharge point
Get those layers right and rainfall passes through the resin, through the open base, and into the ground — reducing run-off, easing pressure on stormwater drains, and helping keep your block cooler than a sealed slab. This is the kind of build-up we detail on a resin-bound driveway, and you can see the full sequence on our how it works page.
"But I already have a concrete driveway"
Plenty of Geelong homes already have a sound concrete or asphalt driveway, and resin-bound stone can be laid straight over it with no demolition — a smart, lower-cost upgrade. There's just one thing to be clear about:
Resin bonded over an existing solid slab is not permeable. The slab is sealed, so water can't soak away through it — it drains off the edges like any hard surface. That's completely fine for most driveways, but it's a sealed surface, not a WSUD one. If on-site soakage matters to you, you need a new permeable base, not an overlay.
It's a genuine trade-off, and we'll talk you through it at the quote: overlaying your existing slab is faster and cheaper but not permeable; a new open-graded base costs more but drains on site. We cover the overlay option in detail in our guide to laying resin over existing concrete.
What WSUD (Water Sensitive Urban Design) means in Victoria
WSUD — Water Sensitive Urban Design — is the Victorian framework for managing rainwater where it falls, rather than rushing it straight into the stormwater network. You may also see the term SuDS (Sustainable Drainage Systems), which is the equivalent idea used overseas. The principles are the same: slow the water down, let it soak in, filter out pollutants, and reduce the volume hitting public drains.
A permeable driveway is one small, practical piece of that picture. Done well, it:
Cuts run-off at the source
Rain soaks into the base instead of sheeting off your block and overloading the street drain in a downpour.
Recharges the ground
Water returns to the soil close to where it landed, rather than being piped away entirely.
Keeps the surface cooler
A bound stone surface over an open base holds less heat than a solid black or grey slab in summer.
WSUD doesn't mean a permeable driveway is mandatory — and it isn't a substitute for proper engineering on a tricky site. It's a design philosophy. Whether it applies to your project, and how, comes down to your council's stormwater requirements.
Greater Geelong City Council & approvals
If you're in our service area — Geelong, the Bellarine Peninsula or the Surf Coast hinterland within the municipality — drainage and stormwater for your driveway fall under the Greater Geelong City Council. That's where any approvals, drainage connections and stormwater requirements are assessed.
What that means in practice:
- Stormwater is a council matter. How your driveway is allowed to discharge water — to a legal point, a soakage system or a combination — is set by council, not by a surface supplier.
- Some sites need a permit or a drainage plan. Larger projects, new crossovers, heritage overlays or sensitive sites may require council sign-off or a registered drainage design.
- We design to suit, then point you to the right approval. We're surfacing specialists, not your consenting authority. We'll build a base that suits your soil and your drainage goals, and tell you honestly when a project needs a hydraulic or civil engineer, a permit, or council drainage approval before we start.
Always confirm current requirements with the Greater Geelong City Council (or a qualified consultant) for your specific address before you commit. Council rules and overlays change, and they take precedence over anything on this page.
Designing for the Geelong climate
Local conditions matter. Geelong and the Bellarine get genuine downpours, the odd frost in winter, and patches of heavy clay that drain slowly. We size the open-graded base for the rainfall and the soil on your block — not a one-size template — so the system has somewhere to put the water in a real storm, and a sensible overflow path when soakage alone isn't enough.
Two facts worth keeping in mind on timing and finish. First, the resin is a two-part aliphatic UV-stable polyurethane — colour-stable in our strong sun, so a warm honey blend stays warm rather than yellowing. Second, our resin needs warmth to cure: below about 15 °C we switch to a catalysed mix, and on a cold winter's day cure times stretch. If you're weighing up colours and stone, our guide to choosing the right blend walks through it, and you can compare techniques in resin-bound vs resin-bonded.
Frequently asked questions
Is a resin driveway actually permeable?
It can be, but only over the right base. Resin-bound stone lets water through the surface because the bound stones leave tiny voids. For the whole driveway to drain on site, every layer beneath it must also let water soak away — a permeable, open-graded base over suitable ground. Laid over a sealed concrete slab, a resin driveway is not permeable. That's why we describe ours as "permeable over a WSUD base", never "100% permeable".
What is WSUD and do I need it in Geelong?
WSUD (Water Sensitive Urban Design) is the Victorian approach to managing rainwater where it falls — slowing it, soaking it in, and reducing run-off into public drains. A permeable driveway is one small part of it. Whether WSUD measures are required for your project depends on your site and the Greater Geelong City Council's stormwater requirements, so it's worth confirming with council before you commit.
Will a permeable resin driveway ever puddle?
A well-built permeable system drains freely in normal rain. In a heavy Victorian downpour it can briefly shed some surface water, and over years the pores can silt up without occasional cleaning. That's why we say "drains freely", not "no puddles, ever" — an honest claim we can stand behind, designed around your soil and rainfall.
Can I make my existing concrete driveway permeable with resin?
No — overlaying a sound existing slab with resin-bound stone gives you a seamless, lower-cost upgrade, but the slab underneath is still sealed, so it isn't permeable. To get genuine on-site drainage you need a new open-graded permeable base, not an overlay. We'll lay out both options, with indicative pricing, at a free site assessment.
Keep reading
Indicative installed pricing runs roughly A$90–230/m² depending on the surface, the base and site access (driveways sit at the higher end). Every figure is indicative only and individually quoted after a free site assessment, where we bring real stone samples, check your soil and drainage, and put it all in a fixed written quote — backed by our 5-year written workmanship guarantee. Get an instant estimate or book a free quote.