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For most Central Coast driveways a properly built concrete slab is the stronger, lower-maintenance choice, because it spans ground movement rather than following it, but pavers on a flexible bed have one real edge: on reactive hinterland clay or a high-water-table lake block they can be lifted and relaid after movement. On confined coastal sand either works. The ground you are on decides more than the material does.
A concrete driveway is one continuous slab. It is poured over a compacted base, reinforced with steel mesh on chairs, and cut with control joints so any shrinkage crack lands on a line you chose rather than wandering across the surface. Its strength comes from acting as a single stiff plate that bridges soft spots in the ground underneath.
A paver driveway is the opposite idea. Individual units sit on a bedding layer over a compacted base, held at the edges by a restraint and locked together by sand in the joints. It carries load by spreading it through the interlock rather than by being one rigid piece. That difference, rigid slab versus flexible field of units, is the whole story when it comes to how each one behaves on Central Coast ground.
This is where the local ground splits the decision three ways. In the Gosford hinterland and up around Kariong and Kincumber you are on reactive clay and shale that swells when wet and shrinks when dry. That constant movement is hard on any driveway. A concrete slab handles it by being stiff enough to span the movement, provided it has the right steel and joints, so a well-built jointed slab often does better here than people expect. Pavers give a little as the ground moves, which sounds good, but on badly moving clay they can rut and spread, and then their advantage kicks in: you can lift the affected pavers, re-level the bed and relay them, which you cannot do with a cracked slab.
On the low-lying blocks near Brisbane Water and the Tuggerah Lakes the water table sits high. A high water table can settle a base unevenly over time, and again pavers let you re-lift and re-bed a section that has dropped, while a slab needs its drainage right from day one so it is not sitting in a wet base. Down on the Peninsula at Umina, Ettalong and Woy Woy you are on loose coastal sand. Sand drains fast and suits either option, but only if the base is properly confined and compacted so it does not spread sideways under a car. The honest summary: pavers are the more repairable choice on ground that moves, a jointed slab is the stronger choice that resists the movement in the first place, and on well-prepared sand it is a free choice.
On cost, plain concrete is usually the cheaper driveway, with indicative supplied-and-laid ranges around $80 to $120 per square metre, while pavers tend to cost more once you add the base, the bedding and the laying labour. Those are market figures to help you compare, not a quote, and the fuller picture is in our driveway cost guide. On upkeep, a slab is close to set-and-forget aside from the odd seal, while pavers can grow weeds in the joints and need the odd re-lift. If it is the look of pavers you are after, a decorative concrete finish or exposed aggregate can give you texture and pattern in a single low-maintenance slab. And if you like the movement-tolerance of pavers but want fewer joints to weed, that is worth raising with your concreter, because the right answer really does depend on your block.
Torn between a slab and pavers? Tell us your suburb and the state of the ground, and a local concreter will tell you honestly which suits your block. Send the details via our contact page for a call back.
It depends on your ground. On reactive clay in the Gosford hinterland or a high-water-table block near the lakes, pavers on a flexible bed can be lifted and relaid if the ground moves, but a properly built jointed concrete slab spans that movement better in the first place. On confined coastal sand either works. The right base for your block matters more than the material.
Pavers are more forgiving of small movement because individual units can be re-lifted and re-bedded, which is handy on reactive clay or a settling lake-side block. But that flexibility is also their weakness: on poor ground they can rut, spread and grow weeds in the joints. A well-built concrete slab with steel and control joints resists the movement rather than following it.
Plain concrete is usually the cheaper driveway, with indicative supplied-and-laid ranges around $80 to $120 per square metre, while pavers tend to cost more once you count the base, the bedding and the laying labour. Those are market figures, not a quote. Decorative concrete finishes can close the gap on looks, so compare like for like on both material and base.
Sandy Peninsula blocks around Umina, Ettalong and Woy Woy suit either, provided the base is properly confined and compacted. Sand drains well, which helps both, but it can spread under load if it is not held, so the preparation is what counts. Get the base right and the choice between a slab and pavers comes down to looks, budget and upkeep.
More reading: all Central Coast concreting guides, or why concrete cracks on the Coast.
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