There is no single “best” contractor for pool renovation Gauteng-wide, and anyone who tells you otherwise is selling, not advising. What you can get is a clear answer to a better question: what does a renovation done properly actually look like, and which contractor can show you that they do it that way, every time? This article gives you the numbers to judge that for yourself — costs, timelines, warranties, and the trade-offs between marbelite and fibreglass — so you can put any quote in front of you to the test.
What “best” actually means for a pool renovation
Gauteng has hundreds of registered pool contractors, but the vast majority are opportunistic operators with limited experience and capacity. That is not automatically a bad thing — some of the best finishing work in the province comes from small, specialist teams. But it does mean the market is uneven. A five-star rating on a review site tells you a handful of past clients were happy. It does not tell you whether the contractor prepares the old surface properly before reapplying, whether they carry their own guarantee, or whether they subcontract the acid wash to whoever is available that week.
The honest way to judge “best” is on four things: the material advice they give you, the timeline they commit to in writing, the warranty they actually honour, and whether the same team handles the whole job from strip to refill. Everything below is built around those four.
Marbelite or fibreglass: the decision before the decision
Every renovation quote you get should start with this conversation, not end with it. Marbelite is the classic South African finish — a plaster made from white cement and marble aggregate, applied by hand and worth its reputation for good reason. It looks clean, it is the cheaper option up front, and most Gauteng pools built before the 2000s are finished this way. The trade-off is that it is porous. It stains, it etches, and it needs regular brushing to stop algae taking hold in the surface texture.
Fibreglass relining works differently. Layers of fibreglass matting go down over the existing shell, saturated with resin, then sealed with a gelcoat top layer. The result is non-porous and chemically inert, which means it resists staining and holds its colour far longer than marbelite. It costs more to install and it is not the right call for every budget, but on a pool that gets heavy use, it earns that premium back in years of maintenance you don’t have to pay for.
For a standard 6×4 metre pool, here is roughly where the two options sit against each other:
| Finish | Renovation cost (6x4m) | Typical time on site | Realistic lifespan |
|---|---|---|---|
| Re-marbelite | Around R18,000 | 3–5 days | 10–15 years before it needs doing again |
| Refibreglass | Around R25,000 | 3–5 days | 15–20 years, chalking and osmosis permitting |
Notice the timelines are the same. The difference in cost isn’t about labour time — it’s about material. Fibreglass resin and matting cost more than cement and marble dust, and the extra R7,000 or so buys you a surface that shouldn’t need touching for a decade or more longer than marbelite.
How long a renovation actually takes
A remarbelite or refibreglass job on an existing pool runs 3 to 5 days from start to finish, assuming the shell itself is sound and doesn’t need structural repair. That is fast, and it should be. The work is mostly surface preparation — stripping the old finish, patching any cracks in the substrate, then applying the new layer and letting it cure. New pool construction is a different scale of project entirely, running 2 to 3 weeks from excavation to a finished shell, because you’re building the concrete structure itself before any finish goes on.
Where contractors lose you time is not in the work itself but in the waiting list before it starts. Demand for pool work in Gauteng collapses over the winter months and then floods back all at once in spring, which means the contractors everyone wants are booked solid by September. A team with enough people to start immediately, regardless of season, is worth more to your timeline than a slightly lower quote from someone who can only fit you in eight weeks out.
What a proper renovation includes
A resurfacing job is not just “paint over the old finish.” Done properly, it follows a sequence, and each step exists to catch a problem before it gets sealed under the new surface.
- Drain the pool and inspect the bare shell for cracks, delamination, or hollow spots.
- Strip the old marbelite or gelcoat back to a clean substrate.
- Repair any structural cracks or chalky patches found in step one.
- Apply the new finish — marbelite plaster or fibreglass matting and resin.
- Cure the surface for the manufacturer’s recommended period before refilling.
- Refill and balance the water chemistry before the pool goes back into use.
The order matters more than it looks. A contractor who skips straight from draining to reapplying finish, without properly inspecting and repairing the shell underneath, is setting you up to pay for the same job again in a fraction of the time it should have lasted. This is exactly how a marbelite resurface that should last a decade ends up cracking again inside three years — the new plaster was never bonded to a sound surface underneath it.
Warranties worth asking about
Ask any contractor quoting you a pool renovation Gauteng-wide job one direct question: what happens if this fails early, and what voids that promise? A lot of the industry offers a single year on plaster work, if anything at all. That is not much cover on a job meant to last five to ten years.
A stronger position looks like five years on remarbelite, five years on refibreglass, ten years on the concrete shell itself, and at least a year on new piping. Guarantees like that only mean something if they’re honoured in practice, which means understanding what they exclude. Reasonable exclusions are damage from genuine natural causes — hail, extreme weather — or damage a person causes, like walking on a surface before it has cured. Anything short of that should be covered without an argument.
The Gauteng market makes this harder than it should be
Part of why homeowners struggle to answer “who is the best” for themselves is sheer volume. Gauteng lists close to 500 registered swimming pool contractors, and most of them are small, single-owner operations. Star ratings cluster at the top across dozens of these businesses, which tells you a five-star average alone isn’t a differentiator anymore — it’s table stakes.
What separates a genuinely reliable contractor from one that just has good reviews is consistency across in-house trades. A renovation touches concrete repair, plaster or fibreglass application, piping, and sometimes heating — if a contractor subcontracts half of that out to whoever is free, you lose the single point of accountability if something goes wrong. A team that keeps every trade in-house, from the concrete work through to the final chemical balance, is the team that can actually stand behind the finished result.
So who is the best for pool renovation in Gauteng?
Judge any contractor, including us, against the standard laid out above: honest advice on marbelite versus fibreglass before the quote, a written timeline of 3 to 5 days for a standard resurface, warranties that run into years rather than months, and one team that handles the whole job rather than farming pieces of it out.
Trademen Pools has built and renovated pools across Gauteng since 2013, with a team of up to 20 people that flexes with the season so a start date isn’t tied to a queue. Every trade — concrete, marbelite, fibreglass, piping, heating — stays in-house. Renovations run 3 to 5 days, new builds 2 to 3 weeks, backed by five-year guarantees on remarbelite and refibreglass, ten years on the concrete shell, and one year on piping, honoured on anything short of storm damage or human interference. Maintenance contracts are available once the job is done, and AI-generated visualisations let you see a design before a single litre of water gets drained.
Frequently asked questions
What is the difference between Marbelite and Fibreglass pool finishes?
Marbelite is a traditional South African plaster finish made from cement and marble aggregate, known for being a more affordable upfront option. However, it’s porous, making it susceptible to stains and algae. Fibreglass relining involves applying layers of fibreglass matting and resin, sealed with a gelcoat, resulting in a non-porous, chemically inert surface that resists staining and maintains color longer, though it comes at a higher initial cost.
How long does a typical pool renovation take in Gauteng?
A standard pool resurfacing job, whether Marbelite or Fibreglass, usually takes 3 to 5 days from start to finish, provided the pool’s shell is structurally sound. This timeframe covers surface preparation, application of the new finish, and curing. New pool construction, however, takes significantly longer, typically 2 to 3 weeks.
What should a proper pool renovation process include?
A proper renovation involves draining the pool, inspecting the shell for any damage, stripping the old finish down to a clean substrate, repairing any cracks or structural issues, applying the new finish, allowing it to cure properly, and finally refilling and balancing the water chemistry. Skipping the inspection and repair steps can lead to premature failure of the new surface.
What kind of warranties should I expect for a pool renovation?
While some contractors offer only a one-year warranty, a stronger warranty would typically include five years for Marbelite or Fibreglass finishes, ten years for the concrete shell, and at least one year for new piping. It’s important to understand what exclusions apply, such as damage from extreme weather or user error.
Why is it hard to find the ‘best’ pool renovation contractor in Gauteng?
The Gauteng market has a large number of registered pool contractors, many of whom are small operations. While online reviews can be helpful, they don’t always indicate the quality of the underlying work, such as proper surface preparation or whether the contractor uses their own consistent team for the entire job. A contractor’s reliability is better judged by their material advice, written timelines, warranty offerings, and whether they handle the whole project in-house.