Choosing a finish for a new pool — or deciding how to resurface an old one — usually comes down to one question: marbelite vs fibreglass? Both are excellent, proven finishes used on thousands of Gauteng pools, but they behave differently in cost, feel, maintenance and lifespan. Here’s an honest, side-by-side comparison to help you choose.
What is marbelite?
Marbelite is a cement-based plaster made from white cement and crushed marble aggregate, trowelled on by hand and cured for a smooth, bright finish. It’s the classic South African pool surface — affordable, attractive and well understood. See our pool marbelite service.
What is fibreglass?
Fibreglass lining is built up from resin and glass matting and sealed with a UV-stable gelcoat, creating a smooth, flexible, non-porous shell. It resists algae and copes well with minor ground movement. More on our pool fibreglass service.
Marbelite vs fibreglass — side by side
- Upfront cost: Marbelite is usually cheaper to install; fibreglass costs more but pays back in low maintenance.
- Feel: Fibreglass is glass-smooth; marbelite is smooth when new but can roughen as it ages.
- Maintenance: Fibreglass is non-porous and resists algae, so it’s easier on chemicals; marbelite is more porous and needs tighter water balance.
- Durability & movement: Fibreglass flexes with minor ground movement; marbelite is rigid and more prone to surface cracking.
- Look: Marbelite gives that classic bright-plaster look; fibreglass offers a sleek, modern, colour-stable finish.
- Lifespan: Both last many years when installed well and looked after.
Which should you choose?
If you want the lowest upfront cost and a classic look, marbelite is hard to beat. If you’d rather pay a little more for a glass-smooth, low-maintenance, algae-resistant surface — especially on Gauteng’s sometimes-shifting ground — fibreglass is the stronger long-term choice. The honest answer for your pool depends on your budget and how you use it, which is why we always recommend an on-site assessment before deciding.
Can you switch from marbelite to fibreglass?
Yes — re-fibreglassing over a prepared marbelite shell is one of the most common upgrades we do, and it’s a great way to give an older plaster pool a modern, low-maintenance surface without rebuilding. If your pool needs a broader refresh, our pool renovation service covers it, and you can see where we work on our service areas page.
Frequently asked questions
Is fibreglass better than marbelite?
Neither is simply ‘better’ — they suit different needs. Fibreglass is smoother, non-porous and lower-maintenance; marbelite is a classic finish at a lower upfront cost. The right choice depends on your pool, budget and how long you want the finish to last.
Can you fibreglass over an existing marbelite pool?
Yes. Re-fibreglassing over a properly prepared marbelite shell is one of the most popular upgrades we do, giving an older plaster pool a smooth, sealed, low-maintenance surface.
Which finish lasts longer?
With correct installation and balanced water, both last many years. Fibreglass is non-porous and very forgiving; marbelite is durable but more porous, so water chemistry matters more to its lifespan.
Which is easier to maintain?
Fibreglass is generally easier — its smooth, non-porous surface resists algae and is gentle on chemicals. Marbelite needs a little more attention to water balance to stay bright and smooth.
Not sure which finish suits your pool?
We’ll give you honest, no-pressure advice for your specific pool and budget. Call: 081 537 0757 | Email: sales@trademen.co.za. Trademen Pools serves the whole of Gauteng with free quotes.
For more background, see this external overview of the properties of fibreglass.
Still weighing up marbelite or fibreglass?
The right finish depends on your pool, your budget and how it's used, so an on-site assessment is the only way to give you a straight answer. Request a quote and we'll walk you through both options for your specific pool.