Repairing an Old Pool in Sanur: What to Update First

If your villa in Sanur has a pool built 15 or 20 years ago, several components have quietly reached the end of their life. You don't need to rebuild everything at once. A smart, sequenced refresh keeps the water clean and safe through both dry and rainy seasons without tearing up the whole garden.

How Sanur Pools Age

Sanur sits right on the coast, and that sea air does slow but steady damage to anything metal or concrete left exposed for decades. Salt-laden humidity accelerates corrosion on fittings, ladders, and pump housings far faster than inland conditions would. Add relentless UV on the plaster surface and heavy downpours from November through March, and a pool that looked fine in 2005 can be leaking, staining, or cycling poorly by its mid-twenties.

Older villas here were often built with thinner plaster coats, simpler overflow channels, and copper or galvanized-steel pipework not designed for tropical salt exposure. None of this means the pool is beyond saving — it just means certain parts will need attention before others.

Plaster and Tiles

Start here if the water looks cloudy no matter how much you filter, or if you see small pits, flaking patches, or discoloured grout lines. Plaster is the first line of defence against leaks; once it's pitted, moisture wicks into the concrete shell and starts corroding reinforcement bars underneath.

A full re-plaster involves chiselling off the old coat, repairing cracks in the shell, applying a new polymer-modified render, and then either leaving it smooth or laying mosaic tiles over it. In Sanur we usually recommend a polymer-modified mix because it handles local humidity and PDAM mineral content better than plain cement.

• Check the skimmer box and return jets for crumbling edges — quick fixes that are easy to miss.
• If only one corner is affected, a patch repair with matching render saves time versus a full strip-off.
• Avoid dosing chlorine while fresh plaster cures; ask your technician for the safe window.

Pipes and Fittings

Underneath the deck or buried under the garden path, plumbing ages silently. Copper pipes develop pinhole leaks at joints; galvanized steel rusts from the inside out; PVC fittings from the early 2000s become brittle and crack when you tighten them during maintenance.

In older Sanur villas the overflow channel often connects directly to a septic tank or open soakaway pit. If that connection has shifted or cracked, you may notice a persistent damp smell near the pool edge after rain. That's not cosmetic — it can contaminate groundwater around where children play.

• Pressure-test suction and return lines before committing to surface work; hidden pipe failures will reappear through new plaster.
• Replace brass or bronze fittings showing green corrosion with stainless-steel or high-grade plastic suited to salt air.
• If the villa uses well water rather than PDAM, check the inlet filter and backwash valve more often — iron builds up faster in tropical aquifers.

Equipment: Pumps, Filters, Chlorinators

The pump, filter, heater (if fitted), and chlorination unit are the working heart of the pool. A motor designed for temperate climates struggles in Bali's heat, especially if it sits in a poorly ventilated equipment shed. Bearings seize, seals dry out, and electrical contacts corrode from humidity.

Salt cells and chlorine cartridges have a finite lifespan. A cell running since 2015 is likely producing far less chlorine than the panel indicates, so you're over-dosing or under-sanitising without realising it. If you smell strong chlorine but the water still feels 'off,' suspect the dosing system first.

• Never mix different chlorine products in the same chamber — toxic gas can result. Stop immediately and call a professional if this has already happened.
• Keep the pump and light electrical panel at least 3 metres from the water edge; test the RCD/GFCI breaker monthly.
• A small submersible circulation pump in the skimmer line helps keep water moving during power cuts common in parts of Sanur, reducing algae blooms after a blackout.

Order of Work and Budget

The sequence most villa owners find practical: (1) pressure-test and repair all plumbing, (2) re-plaster or tile the shell, (3) replace or service the equipment package, (4) refresh deck coping and external finishes. Doing plumbing before plaster means you won't break open fresh render six months later because a pipe was leaking behind it.

Budgets vary enormously depending on whether you're patching one corner or doing a full strip-and-rebuild, and on access — a pool tucked between two walls costs more in labour than an open courtyard. No one can quote a fixed number without seeing the actual condition. Send clear photos of the interior, equipment area, and any visible leaks on WhatsApp, and your technician will walk you through what's needed and give a transparent estimate for that specific job.

• If the villa has a rooftop tank feeding the pool top-up, check its float valve while you're at it — a stuck float wastes hundreds of litres per day.

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