To fix a slightly unlevel above-ground pool (1-3 inches) without draining, carefully lift the low sides using a hydraulic jack and insert wooden shims for support. This guide provides a step-by-step approach to identify the issue and address it effectively.

Safety First: Always exercise caution when lifting heavy objects. Use appropriate safety gear and have a helper present.

1. Diagnosing the Problem

Before you start, understand the extent of the leveling issue and where it’s most pronounced.

  • Visually Inspect the Pool: Observe the water level in relation to the top rail.
  • Use a Level: Place a long spirit level (at least 4 feet) on the top rail in several locations.
  • Measure the Difference: Determine the height difference between the lowest and highest points.
  • Check the Ground Conditions: Inspect the ground around the legs for erosion or soft spots.
  • Consider the Age of the Pool: Newly installed pools settle; older pools develop issues due to ground movement.

2. Gathering Tools and Materials

Have everything on hand before you start to make the process smoother.

  • Hydraulic Jack: Essential for lifting the pool’s legs.
  • Wooden Blocks or Shims: To support the legs after lifting.
  • Shovel: For adding or removing soil.
  • Tamper: To compact the soil.
  • Level: To continuously check progress.
  • Tape Measure: For accurate measurements.
  • Gloves and Eye Protection: For safety.
  • Water Hose: (Optional) To moisten the soil.
  • Helper: Makes the task easier and safer.

3. The Lifting and Leveling Process

Careful, methodical work is key.

  • Prepare the Ground: Clear debris around the leg you plan to lift.
  • Position the Jack: Place the jack directly beneath the pool leg on a stable surface.
  • Lift Carefully: Slowly jack up the leg enough to insert the shim plus a little extra. Don’t over-lift.
  • Insert the Shim: Slide the wooden block under the leg.
  • Lower the Jack: Slowly lower the jack, allowing the leg to rest on the shim.
  • Compact the Soil: Use the tamper to compact the soil around the leg.
  • Repeat for Other Legs: Move to the next lowest leg and repeat.
  • Monitor and Adjust: Recheck the level after a few days.

4. Preventing Future Problems

Preventative measures will help keep your pool level.

  • Improve Drainage: Ensure water drains away from the pool’s base.
  • Use a Solid Base Material: Consider crushed stone or a pool pad if you ever drain the pool.
  • Regular Inspections: Periodically inspect the ground and pool’s level.
  • Protect Against Erosion: Plant grass or use landscaping fabric and mulch.