Coloured concrete typically costs more than a standard grey pour — the difference comes down to the pigment cost, the additional finishing care required, and the sealing that should always go over coloured work. In the Coffs Harbour market, most homeowners find the gap is smaller than they expected when they weigh it against the visual result they get. I always say plain grey is fine if grey is what you want — but if you’re going to the effort of replacing a driveway or laying a new patio, colour is worth the step up. It’s a one-time decision you’ll look at every day for twenty years.

A well-poured and properly sealed coloured concrete slab should last thirty or more years in this region — the subtropical climate is harder on unsealed concrete, but sealing manages most of that. What changes over time is the surface colour intensity, not the structural integrity of the slab. Regular resealing — roughly every three to five years depending on traffic and exposure — is what keeps it looking the way it did when it was first poured. I’ve seen ten-year-old coloured driveways in Sawtell and Toormina that still look excellent because the owners have kept up with the maintenance.

If your existing concrete is structurally sound — no major cracking, no significant subsidence — an oxide wash or stain can add colour to the surface without a full replacement. It won’t deliver the same depth of colour as a freshly poured integral colour slab, but it’s a meaningful upgrade over tired grey at a fraction of the cost. The surface does need to be clean, free of sealers, and properly prepared before any colour product goes down. I’d want to have a look at the existing slab before recommending this approach — some older Coffs Harbour driveways have enough surface deterioration that a replacement is the better long-term call.

Salt air is a real factor for properties in Woolgoolga, Moonee Beach, and Sawtell — it accelerates efflorescence and can affect sealer performance if the wrong product is used. I always recommend a penetrating sealer with good salt resistance for anything within a couple of kilometres of the coast, rather than a standard film-forming sealer. The concrete mix itself also needs to be specified correctly for coastal conditions — a denser, lower-permeability mix reduces moisture migration and the efflorescence risk that comes with it. It’s something I factor into every coastal project from the start, not something you want to try to fix after the fact.

The cooler months — roughly April through to September — are the best window for coloured concrete work on the Mid North Coast. Summer pouring in Coffs Harbour means high temperatures, high humidity, and the risk of afternoon storms, all of which create challenges for finishing and curing that are amplified with coloured work. Heat accelerates the set, which reduces the finishing window and can cause surface cracking that’s far more visible on coloured concrete than it would be on plain grey. I won’t say we won’t pour in summer — we do — but we manage the timing carefully and I’d always prefer to give a coloured project the best possible conditions.

Yes — and it’s worth knowing this before you commit to a colour. A gloss sealer will deepen and intensify the colour noticeably, giving a wet-look finish that’s popular on patios and entertaining areas but can look very shiny on driveways. A matte or low-sheen sealer preserves the natural dry colour more closely and tends to suit the relaxed coastal aesthetic that most Coffs Harbour homeowners are going for. I always show clients both options on a sample patch before sealing — the difference is significant enough that it’s not a decision to leave to the contractor on the day.