Bushland Beach has been one of our busiest coastal suburbs across the northern Townsville corridor this year. The mix of newer family builds along the Beach Road spine, retirees downsizing from acreage further inland, and the constant flow of pool installs that come with any Dry Tropics suburb near the water have all kept things ticking. We finished a job in Bushland Beach a couple of weeks back that was a genuinely fun one — a wraparound coloured concrete pool surround plus a matching alfresco slab under a new pergola. Here’s how the job came together from the first site walk through to the client’s first backyard barbecue.
The Bushland Beach brief
The clients had bought their Bushland Beach block about four years back — a large family home on a corner block with generous backyard space, a few streets in from the water. They’d just had a new plunge pool installed as part of a bigger backyard renovation and had a builder set up a timber pergola over the intended alfresco zone. The pool builder had handed over a site with bare earth around the pool coping, and the pergola was standing on temporary footings waiting for a proper concrete floor underneath. They wanted us to pour both areas as a single connected project — the pool surround wrapping around the pool and stepping up to the alfresco under the pergola — in a single coloured concrete finish that would tie the whole backyard together. They wanted grip when wet, a colour that wouldn’t fade under our brutal UV, and something that stayed cool enough underfoot in a Townsville summer.
The site walk
The site walk on any Bushland Beach block always starts with the falls. We walked the pool surround area with the client, mapped the natural fall from the back of the pool toward the eastern boundary, and identified where the pergola alfresco needed to sit slightly above the pool surround for the step-up detail she wanted. Three test holes confirmed sandy-loam soil down to about 900mm with firmer subsoil underneath — very typical for the northern Townsville coastal strip. We planned the drainage falls, worked out where the linear drain would sit between the pool coping and the surround, and got the client to sign off on the final levels before we set the formwork. Small early decisions like these are the ones that save the arguments later.
Sub-base prep for coastal soils
Bushland Beach soils drain freely when they’re dry, but coastal sandy-loam has almost no bearing capacity if it stays wet. Any decent concrete design on this soil profile has to be built with that in mind. We stripped the topsoil, dug the perimeter formwork trench deeper than we would on stable soil, and brought in 150mm of compacted DGB20 road base in two vibrating-plate layers. Heavy-duty vapour barrier went across the entire prepared bed, taped at all overlaps and folded carefully up the perimeter edges. On coastal blocks the vapour barrier isn’t optional — skip it and you get persistent dampness at the slab edges that damages the coloured pigment over time and can lift the sealer. Fifteen minutes of extra care with the vapour barrier saves fifteen years of edge staining. For the fundamentals we apply on all coastal work, see our concrete slabs service page.
Choosing the pigment
Pigment selection for outdoor coloured concrete in Townsville is a specific conversation. Our UV is genuinely brutal — we get more solar radiation than most of Australia, and unstable pigments fade within a couple of summers. We only use iron-oxide pigments rated for tropical UV exposure, and we always show clients physical cured samples in their actual outdoor light rather than swatches on a screen. The Bushland Beach clients wanted something that read as warm and welcoming rather than clinical, and would suit the whitish rendered walls of the house. We brought five cured samples to the second site visit, walked around them at three different times of day, and let them live with the finalists for a week before locking one in. They chose a warm sand-tan pigment that reads softly in the morning shade and holds its warmth in the harsh middle-of-day sun. Our coloured concrete service page covers the technical fundamentals of how the pigment integrates with the mix.
The tropical heat problem
One of the biggest single considerations for any outdoor pool surround in the Dry Tropics is surface heat. Dark-coloured concrete in full Townsville sun can reach surface temperatures above 60°C — literally too hot to walk on barefoot, which defeats the entire purpose of a pool surround. Light-to-mid pigment tones stay dramatically cooler under our summer sun. The warm sand-tan the clients chose was specifically selected in the range that stays walkable-comfortable even at the hottest part of the day. The alternative — a striking charcoal or dark chocolate colour that photographs beautifully — would have been unusable for four months of the year. Our piece on concrete pool surrounds in Townsville covers the heat and slip resistance thinking in more detail.
Reinforcement, formwork and jointing
The pool surround came in at 100mm thick with SL72 mesh and a thickened edge beam where the surround met the pool coping. The alfresco slab under the pergola stepped up 100mm from the pool surround and matched the same reinforcement schedule. Saw-cut control joints at 3m intervals ran through both slabs, aligned across the step so the joints read as deliberate design lines rather than random cuts. Proper expansion joints with closed-cell foam went in everywhere the new concrete met the pool coping, the house slab, and the pergola posts — every one of those interfaces needs the slab to be able to move independently without cracking randomly. Cutting corners on jointing is the fastest way to a cracked pool surround in this part of Queensland, where our thermal expansion is more aggressive than most of the country.
Pour day and the tropical weather window
Townsville pour weather is different from most of the country. We’re not fighting cold; we’re fighting slab temperature and afternoon storms. We scheduled the pour for a shoulder-season week where daytime highs were sitting in the low 30s and afternoon storms weren’t forecast. Two trucks staggered through the morning, four crew on the slab, and we started at 6am to give ourselves the coolest possible working window. The pool surround went down first, screeded off, levelled with bull floats. The alfresco slab followed an hour later. Both got the standard treatment for coloured concrete — the pigment was integrated through the whole mix rather than dusted on the surface, which gives colour depth all the way through the slab rather than a colour layer sitting on top. That difference matters when the surface eventually wears — through-pigmented concrete never shows a raw grey wear-through.
Cure, sealing and slip resistance
Saw-cut joints went in the next morning before random cracking could start. Three days after the pour both slabs were walkable, seven days they were ready for furniture. Two weeks after the pour, once the slabs had cured properly, we came back and applied a UV-stable acrylic sealer with a non-slip additive on the pool surround zone specifically. The pool surround needs the slip protection because it’s the surface that will spend most summer wet with pool splashout. The alfresco slab got a lighter sealer without the additive because it stays dry under the pergola. The sealer also locks in the pigment and protects it from chlorine, sunscreen and general weathering — critical for a coloured concrete pool surround where a couple of unsealed summers can flatten the colour depth.
The handover and the family barbecue
The clients had their first backyard gathering the weekend after the two-week cure. The single most common piece of feedback we get across every coloured pool surround job is some version of “we can’t believe how much bigger the backyard feels” — and the Bushland Beach clients had exactly the same reaction. A properly done pool-plus-alfresco pour turns a pool with bare earth around it into an actual outdoor room. Three months on, after some serious afternoon storms and some proper summer heat, the drainage is performing exactly as designed, the pigment is holding its depth, and the slip additive on the surround is doing its job every time the kids get out of the pool.
What this means for other Bushland Beach, Kelso and Mount Louisa homes
If you’re in Bushland Beach, Kelso, Mount Louisa, or anywhere across the northern Townsville coastal corridor, and you’ve got a new pool going in or an outdoor entertaining project on the drawing board, the conversation worth having is at the design stage — not after the pool builder has finished and left you with bare earth. Getting the concrete design in ahead of time lets us coordinate falls, drainage, jointing and pigment with everything else that’s happening in the backyard. Our recent piece on a driveway and front path in Idalia covers what the front-of-house version of this thinking looks like.
Beyond pool surrounds
Coloured concrete works well across the residential yard — driveways, paths, alfresco slabs and outdoor entertainment areas. For a broader look at decorative concrete options, see our piece on concrete finishes for Townsville homes. For shed slab work on rural and lifestyle blocks, our piece on concrete shed slabs in Townsville covers the engineering and council side.