Every year, as the leaves start to turn and the air gets that crisp edge, I’m reminded of the task that looms over every above ground pool owner: winterising. It’s not just about covering the pool and calling it a day—proper winterising above ground pool is crucial to prevent damage from freezing temperatures, debris, and algae growth. I’ve learned the hard way that skipping steps or cutting corners can lead to costly repairs come spring. In this guide, I’ll share what I’ve found works best, based on years of trial and error, to ensure your pool survives the winter intact.
Why Winterising Above Ground Pool Matters
Winterising isn’t just a chore—it’s an investment in your pool’s longevity. Freezing temperatures can crack liners, damage pumps, and warp walls if water isn’t properly managed. Debris like leaves and twigs can decompose, staining the pool and fostering algae growth. In my experience, a well-winterised pool not only saves money on repairs but also makes opening it next season a breeze. It’s the difference between a smooth start to summer and a headache of cleaning and fixing.
Step-by-Step Guide to Winterising Above Ground Pool
- Clean the Pool Thoroughly: Before anything else, remove all debris from the pool. I use a skimmer and a pool vacuum to ensure the bottom and sides are spotless. This prevents stains and algae buildup during winter.
- Balance the Water Chemistry: Test and adjust the pH, alkalinity, and chlorine levels. I aim for a pH of 7.2–7.6 and alkalinity of 80–120 ppm. Shock the pool to kill any remaining bacteria. This step is non-negotiable—imbalanced water can cause corrosion or scaling.
- Lower the Water Level: Use a submersible pump to lower the water level below the skimmer. I’ve found that leaving it too high can cause damage if the water freezes and expands. However, don’t lower it so much that the pool walls lose support.
- Add Winterising Chemicals: Invest in a good winterising kit, which typically includes algaecide and a stain preventer. Follow the manufacturer’s instructions carefully. This step ensures your pool stays clean and clear until spring.
- Clean and Store Equipment: Disconnect and clean the filter, pump, and heater. I store them in a dry place to prevent freezing damage. For the skimmer and return jets, I use a winterising plug to block water flow.
- Install a Pool Cover: A sturdy winter cover is your pool’s best defense against debris and ice. Make sure it’s properly secured with a cable and winch. I’ve tried both mesh and solid covers—mesh allows water to drain, while solid covers block more light, reducing algae risk.
Common Mistakes to Avoid When Winterising Above Ground Pool
Over the years, I’ve seen (and made) a few mistakes that can undermine your winterising efforts. One big one is not lowering the water level enough, which can lead to cracked skimmers or overflow damage. Another is skipping chemical treatments, thinking the cold will kill everything—it doesn’t. Lastly, using a cheap or ill-fitting cover is a recipe for disaster. It’ll tear or blow off, leaving your pool exposed.
⚠️ Note: Always double-check your pool manufacturer’s guidelines for specific winterising instructions. Some pools have unique requirements that can’t be overlooked.
Tools and Supplies for Winterising Above Ground Pool
Having the right tools makes the process smoother. Here’s what I keep on hand:
- Pool skimmer and vacuum
- Water testing kit
- Winterising chemicals (algaecide, stain preventer)
- Submersible pump
- Winter pool cover with cable and winch
- Winterising plugs for skimmer and return jets
When to Start Winterising Above Ground Pool
Timing is key. I start the process when temperatures consistently drop below 65°F (18°C). Waiting too long risks freezing temperatures catching you off guard. On the flip side, starting too early can lead to algae growth if the water stays warm. It’s a balance, but keeping an eye on the forecast helps.
Winterising above ground pool might seem like a lot of work, but trust me—it’s far less effort than dealing with a damaged pool in spring. By following these steps and avoiding common pitfalls, you’ll protect your investment and ensure your pool is ready for another season of fun. Start early, be thorough, and your pool will thank you when the warm weather returns.
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