Sawtell has been one of our busier pockets across the Coffs Harbour region recently. The combination of beach-side homes being progressively renovated, plenty of pool installs going in over the past couple of summers, and the steady stream of Sydney downsizers buying in have all kept the phone busy. We finished a job in Sawtell a few weeks back that was a good representative slice of what we do most weeks — a tired old driveway being replaced and a brand-new pool surround going down at the same property as part of a backyard upgrade. I thought it was worth walking readers through how the job came together, because the lessons in it apply to a lot of Coffs-region homes right now.
The Sawtell brief
The clients had bought their Sawtell home about two years earlier — a tidy 1990s brick-and-tile on a generous block, a few streets back from Sawtell Beach. The original driveway was cracked, stained, and a bit narrow for the family’s current vehicles (two cars plus a boat trailer that was usually parked in the driveway). At the back of the property they’d just had a new fibreglass pool installed, and the pool builder had handed over a site with the pool in but a couple of metres of bare earth surrounding it that needed concreting. They wanted us to handle both jobs in one mobilisation — fresh driveway out the front, new pool surround out the back, exposed aggregate finish on both for consistency, all done in one tight week if the weather played fair.
The site walk
The site walk on any Mid North Coast block always starts with the soil and the slope. Sawtell sits on classic coastal soil — sandy-loam over deeper clay, drains well in the top metre, holds moisture closer to the water table. The existing driveway had two long diagonal cracks and a section near the kerb where the slab had clearly settled, telling us the sub-base hadn’t been properly compacted when the original was poured. Out the back, the pool surround area needed careful level planning — the pool sat slightly higher than I’d have liked relative to the back fence, which meant drainage had to be designed properly to keep storm runoff away from the house. We dug a couple of test holes, confirmed the soil profile, and mapped out where everything had to fall on the day of the pour.
Demolition and sub-base prep
Day one was demolition. The old driveway came up in chunks and went onto a tip truck for recycling. We then dug down to firmer subgrade, removed the loose patches in the existing sub-base, and brought in 150mm of compacted DGB20 road base in two layers, each compacted with a vibrating plate. Out the back, the pool surround area got the same treatment — strip the loose topsoil down to firm ground, lay road base, compact properly. Skipping the sub-base step is the single biggest reason driveways fail visibly in the Coffs region, and it’s the cheapest detail to do correctly the first time. Once the road base was in, we laid heavy-duty vapour barrier across both prepared beds to seal them against ground moisture wicking up through the slab.
The drainage planning
Drainage is the half of the job nobody sees that determines how the slab performs for the next thirty years. We designed a 1:80 crown across the driveway width and a 1:100 fall along the length toward the street kerb. The pool surround got a 1:100 fall away from the pool coping toward a linear drain hidden along one edge, which feeds into an ag drain running down to the back corner of the block. Sawtell rainfall is no joke during a serious summer storm — we plan for the worst storm the surround will see, not the average one. Ponding water around a pool turns into algae, slip hazards and eventually movement at the slab edges, all of which were exactly what we were determined to design out.
Reinforcement and jointing
The driveway came in at 125mm thick with SL82 mesh, plus additional bar reinforcement at the kerb tie-in where the slab takes the most stress from vehicles turning in from the road. The pool surround at 100mm with SL72 mesh, which is sufficient for foot traffic with no vehicle loads, plus a thickened edge beam where the surround meets the pool coping for extra protection. Saw-cut control joints were planned at 3m intervals across the driveway and at 3m × 3m on the pool surround. True expansion joints went in everywhere the new concrete met existing structure — the kerb, the pool coping, the house wall. Cutting corners on joints is the single biggest reason coastal driveways and pool surrounds crack visibly within a few years.
The aggregate choice
The clients wanted both surfaces in exposed aggregate for the look and for the grip. We brought five physical samples to the site visit and laid them on the driveway at different times of day. A darker blend looked striking but would absorb summer heat dramatically — bare feet on a 60°C pool surround aren’t comfortable for anyone. They went with a mid-tone cream-and-grey blend with medium-sized pebbles, which stays cooler underfoot, gives reliable wet grip, and reads warm against the brick of the house. The same blend ran through both the driveway and the pool surround so the whole property reads as one coherent project rather than two separate ones — that consistency matters for resale and for how lived-in the place feels day to day.
The pour day
The radar showed a 48-hour weather window between two forecast wet-season storms. Two trucks staggered through the morning, the line pump on standby, five crew on site, and we started at 6am to give ourselves margin. The driveway went down first because it was the more critical surface and we wanted the fresher concrete on it. The pool surround followed an hour later. Both got the standard treatment — screeded, levelled with bull floats, bagged with the aggregate exposure retarder. By late afternoon we’d done the high-pressure water blast that exposes the aggregate on both surfaces, and we had everything covered with curing blankets before the forecast evening storm rolled in. By morning the slabs were exactly where they needed to be.
Sealing and cure window
Saw-cut joints went in the next morning before random cracking could start. Three days after the pour both slabs were walkable; seven days the driveway could take normal vehicle traffic. Two weeks after the pour, once the concrete had cured properly, we came back and applied a penetrating sealer with a non-slip additive on the pool surround zone — critical for a backyard with kids. The driveway got a standard penetrating sealer that protects against tyre marks, oil drips and the general weathering that coastal homes deal with. Sealing the pool surround properly extends the life of the surface by years, especially given the chlorine and sunscreen chemistry it sees every summer.
The handover
The clients drove the family car onto the new driveway later that week and the immediate reaction was about how much wider and more usable everything looked. The boat trailer now fits cleanly in the driveway without needing to be pushed back at an awkward angle. The pool surround has already hosted a few weekend barbecues. Three months on, after a couple of decent wet-season storms, the drainage is performing exactly as planned. No ponding, no edge erosion, no movement at any of the joints. The clients have already had a few neighbours over the fence asking who did the work — which is the best feedback we get in this business.
What this means for other Sawtell, Toormina and Boambee homes
If you’re in Sawtell, Toormina, Boambee, Park Beach or anywhere across the Coffs Harbour coastal strip, and your driveway or pool surround is starting to look its age, the conversation worth having is sooner rather than later. The dry shoulder months are our best pour windows and they fill up fast. The wet season can be done but adds stress for everyone involved. The decisions that make the difference are nearly always the boring ones — sub-base prep, drainage design, reinforcement schedule, jointing pattern. None of those are visible in the finished concrete, but they’re the entire reason a properly built driveway lasts thirty years instead of five.
The kind of work we do
Across the Coffs Harbour region we handle the full range of residential concreting — driveways, pool surrounds, alfresco patios, paths, shed slabs and the occasional decorative finish. Every job starts with a proper site walk, soil checks, and an honest conversation about what’s the right approach for the specific block. Coastal blocks have their own quirks. Older slabs hide their own surprises. The cheapest quote on the table rarely turns out to be the cheapest finished job once you factor in how long it lasts. If you’ve got a project coming up, we’re always happy to come and walk through it before you commit to anything.