To properly prepare soil for an above ground pool, you need to create a level and compacted base. This generally involves removing the existing grass and topsoil and replacing it with compacted aggregate. Here's a breakdown of the process:
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Clear the Area: Remove all grass, vegetation, and topsoil to a depth of about 5-6 inches. This is crucial for creating a stable foundation.
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Level the Ground: Ensure the ground is as level as possible. Use a level and measuring tools to identify high and low spots. Correct any unevenness by removing soil from high areas and filling in low areas. Compacting the soil after adjustments is important.
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Add Crushed Aggregate: Pour a layer (approximately 4 inches) of crushed, compacted clear aggregate (typically ¾” stone) over the leveled area. This provides drainage and a stable base. Compact this layer thoroughly using a plate compactor.
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Add a Layer of Screening/Brick Mortar/Sand: Top the crushed aggregate with a 2-inch layer of compacted screening (also known as stone dust), brick mortar, or sand. This creates a smooth, even surface for the pool liner. Compact this layer thoroughly as well.
Why is this important?
- Stability: A properly prepared base prevents the pool from shifting or settling unevenly, which can damage the pool structure.
- Liner Protection: The smooth top layer (screening/mortar/sand) protects the pool liner from punctures or abrasions caused by rough surfaces.
- Drainage: The aggregate layer allows for proper drainage, preventing water from pooling under the pool.
Important Considerations:
- Compaction: Compaction is key at each stage. Rent a plate compactor to ensure the aggregate and top layer are firmly packed.
- Circle Size: Ensure the prepared area extends slightly beyond the pool's dimensions. This provides extra support and allows for adjustments.
- Professional Help: If you're unsure about any aspect of the preparation, consider hiring a professional landscaper or pool installer.
