Winter Pool Maintenance: Why It’s the Best Time to Get Repairs Done
Most South African pool owners stop thinking about their pool in winter. The cover goes on, the pump is turned down, and attention shifts elsewhere until the weather warms up. But winter is actually the smartest time to deal with anything that’s been bothering you about the pool. Repairs, resurfacing, equipment changes, structural work: all of it is more practical to tackle now than to wait for summer.
This guide explains what to check on your pool in winter, what to fix while no one’s swimming, and the issues that get worse if you leave them until spring.
Why winter is the right time for pool work
Winter in Gauteng runs from roughly May through August. Pool use is minimal, water temperature is low, and chemical demand drops. That makes it the ideal window for any work that involves:
- Draining the pool fully or partially
- Resurfacing (marbelite, fibreglass relining, plaster)
- Tile or coping replacement
- Structural repairs and crack fixing
- Major equipment swaps (filter, pump, salt chlorinator, heater)
- Plumbing changes or upgrades
Doing these jobs in spring or summer means losing weeks of swim time. Doing them in winter means everything is tested, balanced and ready by the time the heat comes back.
There’s also a practical scheduling advantage: pool builders and renovators are far less booked in winter, so lead times are shorter and pricing is often more flexible.
Routine winter pool care
Even with low use, a pool still needs basic care through winter to avoid bigger problems in spring.
Keep the pump running, just less
Don’t switch the pump off entirely. Run it for 4 to 6 hours a day to keep water moving and the filter clearing debris. Standing water encourages algae, even in cold conditions.
Test water at least every 2 to 3 weeks
Cold water doesn’t mean balanced water. Test pH, alkalinity and chlorine. Adjust as needed. Cold water actually holds chlorine better than warm, so you’ll use less, but it still needs maintaining.
Keep the pool covered
A pool cover dramatically reduces debris, evaporation and chemical loss. It also keeps leaves and frost out, both of which can stain or damage surfaces.
Clear debris weekly
Skim, vacuum and brush as needed. Trees lose more leaves in autumn and winter, and a pool full of decaying organic matter is the fastest way to get green water in early spring.
Top up gradually
Evaporation continues even in winter. If you’re topping up with borehole water, keep your chemical balance in check (covered in detail in our borehole vs tap water guide).
Common pool problems that show up in winter
Winter exposes issues that the rest of the year disguises.
Hairline cracks become visible
Lower water temperatures cause concrete to contract slightly. Existing micro-cracks open up and can lose water faster than evaporation accounts for.
Surface wear is more obvious
With less swimming, you actually look at the pool more. Rough, chalky or stained surfaces become harder to ignore.
Equipment shows its age
Pumps and chlorinators that work hard in summer often fail in early winter, when demand drops and any underlying fault becomes obvious.
Tile damage and grout failure
Frost or expansion damage to tiling, copings and waterlines tends to show up in winter, especially after a cold snap.
Repairs worth tackling now
If your pool has any of these issues, winter is the time to deal with them.
Resurfacing or relining
Marbelite resurfacing and fibreglass relining both need the pool fully drained for several days. In summer, that’s a lost week of swim time. In winter, you barely notice.
Crack and structural repairs
Crack repairs work best on dry, accessible surfaces. Winter gives the pool time to be drained, properly assessed and patched before refilling.
Equipment replacement
Swapping out pumps, filters, chlorinators or heaters is far easier when the pool is offline. New equipment can be tested and balanced before swimming season starts.
Tile and coping work
Replacing damaged tiles or copings, regrouting waterlines, or fixing surrounds: all messy jobs that benefit from winter scheduling.
Drain and acid wash
A drain and acid wash gets rid of stubborn stains and mineral deposits. It needs the pool empty for a day or two and is best done in cool, dry weather.
Pool conversions
Converting from chlorine to salt, adding heating, or changing the filtration setup is easier and faster in the off-season.
Mistakes to avoid in winter
A few things owners commonly get wrong:
Switching the pump off entirely. Standing water grows algae fast, and you’ll spend weeks recovering in spring.
Ignoring water chemistry because the pool is covered. Even covered pools lose pH balance and chlorine over time.
Letting debris build up. Decaying leaves and organic matter on the surface stain pool finishes and load up on phosphates that feed algae later.
Postponing visible damage. A small crack in May can be a major repair by September. The longer it sits empty or losing water, the worse it gets.
Booking pool work in October. Everyone tries to get repairs done just before summer, which is exactly when contractors are most booked. Winter scheduling is faster, cheaper and less stressful.
In short
Winter is the maintenance window, not a break from it. Keep the basics ticking (pump, water testing, debris, cover) and use the off-season to fix what’s actually been bothering you about the pool.
Done in winter, structural work and resurfacing finish well before swimming season. Done in summer, you lose the use of the pool for weeks at exactly the time you most want it.
If you’ve been putting off a repair, resurfacing, or equipment upgrade, contact Chosen Pools about scheduling the work this winter, when it’s quicker, cheaper and out of the way before October.