An estate committee decides the clubhouse needs a pool. Three contractors quote, and the numbers cannot be compared. One priced a plunge pool, one priced a lane pool, and one never mentioned the fence. Commercial pool construction Gauteng businesses commission is rarely a bigger version of a home pool. It is a different brief, with heavier daily use, more people carrying responsibility, and an inspection that has to pass before anyone swims.
This article sets out how we think about that brief. It covers size and depth, the choice between marbelite and fibreglass, how the build runs, and the barrier and gate, which is where most business pools get caught out.
How big and how deep should a business pool be?
Size and depth follow how the pool will be used, not how impressive it should look. A gym, a school, a resort and a residential estate each need a different water shape, and getting that wrong is expensive to fix once the shell is poured.
The reference sizes are a useful starting point. An Olympic pool is typically 50 m by 25 m with a minimum depth of two metres. School pools vary, but 25 m by 12 m with a depth between 1 m and 2 m is common. Water polo pools run to about 30 m by 20 m and 1.8 m to 2 m deep. Almost no business needs any of these. They show you where the depth and length requirements come from if you do want competition use.
For recreation, the usual depth is roughly 0.9 m to 1.5 m. A pool meant for competitive swimming needs at least about 2.1 m. That gap matters more than people expect. A deep, competition-style pool is the wrong answer for a hotel where guests wade and children play, and a shallow leisure pool is the wrong answer for a swim club.
Before design starts, we ask the questions that settle all this:
- Who swims, and how many at the busiest hour?
- Is it for fitness, play, lessons, or looking at?
- Will children or the general public use it, or only members and guests?
- Does the site have room for the pool, the paved apron and the equipment?
If the public will use the pool, raise access early. Features such as hoists, zero-entry steps and handrails change the shell, and they are cheap to draw in and costly to add later. Depth markers, drain positions and slip-resistant surfaces get the same early treatment. The Mission Pools design guide gives a useful general checklist of what to settle before drawings.
Which finish suits a commercial pool: marbelite or fibreglass?
Both work, and the right one depends on your site, your look and how you plan to run the pool. We build every pool as a concrete shell and finish it in either marbelite or fibreglass, and we do both with equal confidence. The honest answer is that each wins in different situations.
The case for a marbelite finish
Marbelite is a cement-and-marble-aggregate plaster, the classic South African finish. Our team applies it by hand onto the shell, then leaves it to cure overnight. It gives a matte surface that suits natural stone, colonial frontages and warmer, more traditional exteriors.
Its real strength on a business site is shape. Because the shell is built on site, the pool can follow an awkward boundary, curve around a feature or fit a layout that no pre-set form would. Marbelite pools also take ceramic mosaic tiles well, so you can carry a brand colour or a stone tone into the waterline and borders. Suction and return run through 50mm PVC piping.
The trade-off is surface. Marbelite is textured by nature, so it feels rougher underfoot than a gelcoated finish. It also needs regular care to stay in good condition, and it will need re-doing eventually.
The case for a fibreglass finish
On the same concrete shell, we plaster the pool and leave it to dry completely. Then we apply resin and gelcoat and let those cure. The result is a smoother, more consistent surface with a slight sheen. It suits cleaner, more contemporary lines, the kind you see in newer developments, apartment blocks and modern hospitality.
For a pool used by many people, the smooth surface is a real selling point. It feels better on skin, and it is easy to keep looking uniform from one end to the other. The trade-off is design freedom and cost. Fibreglass sits at a slightly higher price than marbelite for a comparable pool, and the look is cleaner but less traditional. It also asks for patience during the build, because the plaster must dry fully before the resin goes on.
How to decide between the two
- Choose marbelite if the pool must fit an irregular site, match natural stone or heritage architecture, or carry a custom tile design.
- Choose fibreglass if you want a smooth, uniform surface and a contemporary look, and the layout is straightforward.
- Ask about renewal. Both finishes eventually need redoing. A remarbelite or refibreglass takes three to five days on our side, so you can plan a short closure rather than a long one.
On price, a 6×4 m marbelite pool is about R78,000 and a fibreglass pool about R85,000. A business pool is larger and more detailed, so we price it as one overall figure after a site inspection. Minor items such as a light or sand change sit inside that figure, so you are not chasing extras. Our guarantees run ten years on the concrete shell, five on the finish and one on piping. They cover normal wear, not damage from weather or from people interfering with the work.
How does a commercial pool actually get built?
It runs in a fixed order, and the order exists to protect the shell. We use the same sequence on every pool we build, and the same in-house team does each stage. Here is how it runs:
- Mark out and square the site.
- Excavate by hand and TLB, depending on access and space.
- Fix the Y8 steel bars and 100mm mesh wire, plus the ring beam.
- Pour the 30 MPa ready-mix shell to 150mm thickness.
- Position the weir, aim-flow and LED light while the concrete sets.
- Cure the concrete for three to five days.
- Lay the bull-nose copings, normally 450x450mm flagstone, and the paving.
- Install the “Box”, our combo unit with pump, sand filter, electrical distribution board with battery-backed timer and a pump house.
- Connect the smaller fittings and run the wiring back to the board.
- Apply the marbelite or the fibreglass finish.
- Fill the pool and commission it.
The early steps decide whether the rest goes smoothly. Squaring the site first lets us check the pool against boundaries, services and drainage while changes still cost nothing. Excavation by hand or machine depends on what the site allows. A TLB is faster, but on a tight business site it can damage paving, walls or trees. In that case hand digging protects everything around the hole, and it takes longer.
The weir, aim-flow and LED light go in while the concrete is still setting because they must sit in the shell, not be cut into it afterwards. Cure time is the other step people try to shorten. Three to five days is not negotiable if you want a shell that lasts. The paving is also 450x450mm and forms a 900mm apron around the pool, which gives patrons room to walk without crowding the water’s edge.
A new pool takes two to three weeks from start to commissioning. We have the team to start straight away, so your project does not wait in a queue before work begins.
Will the barrier and gate pass inspection the first time?
Often not, and the gate is usually the reason. It is the most frequent cause of a failed barrier inspection, so it deserves more attention than it normally gets in a business plan. A fence that looks fine from across the lawn can still fail on one detail.
The main requirements are simple to state:
- The barrier is at least 1.2 m high, measured from the ground on the outside of the enclosure, not from inside the pool area.
- It has no footholds a child can climb, and no gap larger than 100mm.
- The gate closes itself, latches itself and locks.
- The latch sits out of a child’s reach, typically 1.5 m above the ground.
- The gate opens away from the pool.
Each detail matters for a reason. Measuring from the outside stops a raised planter or paving level from quietly cutting the real height. Horizontal rails give a child a ladder. A gate that relies on someone remembering to close it will, sooner or later, be left open, which is why self-closing and self-latching are not optional. On a business site with constant foot traffic, a gate gets abused far more than at a house, so we specify hardware that copes.
Existing walls can help or hinder. A garden wall can form part of the barrier if it meets the same height and foothold rules as a purpose-built fence. A low retaining wall with a step up usually does not qualify, because the step cancels out the height. Pool nets and covers are different again. Some councils and insurers will not accept them as a standalone barrier, even where they suit a retrofit, so confirm before you rely on one. The NSRI’s guidance on pool safety measures is a good independent reference on why these details matter.
Business pools add more on top of the barrier. Warning signage has to be clearly visible, lifesaving equipment should be within reach, and an alarm is a sensible extra. We handle council management as part of the build. Council typically requires approved drawings and a signed indemnity form before work begins, whether the job is a new pool or a barrier added to an existing one. Getting the barrier right on the plan avoids the cost of a repeat visit later. It also helps at sale time, because buyers and their attorneys check barrier compliance when a property with a pool transfers.
What should you expect from the contractor you hire?
Expect one team, one price and one person who answers for the whole job. Trademen Pools was founded in 2013 and carries a 4.9/5 Google rating. We employ up to 20 people depending on the season, and we handle everything in house: design, excavation, shell, finish, equipment, filling and commissioning. There is no subcontractor to blame when something slips.
That matters on a commercial site more than a residential one. You have tenants, members or guests, a site manager and often a body corporate, and each has a view on trucks, noise and working hours. We plan material staging, spoil removal and delivery slots with whoever controls the site. We also show you an AI-designed visualisation before anything is dug, so a committee can agree what it is buying.
Ask any contractor you are considering these questions:
- Do you build the shell and the finish yourselves, or subcontract either?
- Who handles council drawings and the indemnity form?
- What exactly does the single price include, and what falls outside it?
- What does the guarantee cover, and what voids it?
- Do you offer maintenance after handover, and how fast do you respond to a fault?
We offer maintenance contracts, and we normally respond to emergency repairs the same day or the next, depending on pressure. If those answers come back vague from another contractor, that tells you something.
What to do before you ask for commercial pool quotes
Write a one-page brief. State who swims, how many at peak, the hours the pool will run, the depth you need and the route from the gate to the spot where the pool will sit. That page does more for the accuracy of a quote than any amount of back and forth afterwards.
Then walk the site with us. A written quote follows the inspection, with the finish, the layout, the barrier and the council process spelled out in one price. If you are weighing marbelite against fibreglass for a business pool in Gauteng, bring both options to that visit. We will tell you which one suits the site and the budget, even when the answer is the one we earn less on.
Get one quote that covers the whole pool
Tell Trademen Pools who will swim, how deep it needs to be and whether the public will use it. You will get one overall price for the shell, the finish, and the barrier and gate, so nothing is left out. The team can start as soon as you approve.