The Winter Dilemma
As winter approaches, swimming pools face the threat of freezing temperatures. This can lead to concerns about the integrity and maintenance of the pool structure. The primary question for many pool owners is whether it’s acceptable for a pool to freeze and if this poses any damage.
Why Not Empty the Pool?
There are various reasons why a pool might not be emptied before winter. One significant reason is the structural support provided by the water. When the pool is full, the water exerts outward pressure, balancing against the inward pressure from the surrounding ground. If a pool is left empty, the ground can shift, freeze, and cause uneven pressure on the pool walls, leading to potential cracks or structural damage.
Additionally, draining and refilling a pool can be labor-intensive and costly. It might be more practical to prepare the pool for freezing conditions rather than empty it entirely. For example, the Dormio Eifeler Park holiday park in Heimbach, Germany, apparently chose to keep their exterior swimming pool full during winter, resulting in a frozen spectacle. This decision likely aimed to avoid structural issues and manage maintenance more efficiently.
Potential Risks and Management
A full pool freezing can be managed with proper winterisation techniques. The primary concern is the expansion of water when it turns to ice, as this expansion can exert significant pressure on the pool’s structure. However, well-constructed pools with appropriate winterisation measures can withstand this pressure. Such measures include using pool covers and installing floating devices like pool pillows or air bags that absorb the pressure from expanding ice.
Best Winter Practices for Pools
To ensure pool longevity and prevent damage, experts suggest the following best practices for winter pool care:
- Lower the Water Level: Reduce the water level below the skimmer line to prevent freeze damage to the skimmers and piping.
- Use Pool Covers: A high-quality pool cover can keep debris out and reduce the risk of ice damage by maintaining a stable water level.
- Install Floating Devices: Floating devices on the pool surface can help absorb the pressure from expanding ice, preventing structural damage.
- Winterise the Plumbing: Ensure that all pool pipes and equipment are properly drained and winterised to avoid freeze damage.
- Maintain Chemical Balance: Keep the water chemically balanced even during winter to prevent algae growth and ensure a clean pool for spring.
If you have a pool and face the same challenge in winter times, how do you proceed? Share it in the comments.
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