Base For Above Ground Pool on Grass: What to Put Under a Pool on Grass?

To install an above ground pool on grass, it’s best to remove the grass and create a proper base. The most common options include sand (2-3 inches deep), solid foam panels, or commercial pool pads. Always level the area before adding the base material.

Here are some key considerations and options for what to put under your above ground pool on grass:

Importance of a Proper Base

A good base serves several important functions:

• Protects the pool liner from damage
• Provides insulation to help maintain water temperature
• Creates a smooth, level surface for the pool
• Prevents grass and weeds from growing under the pool
• Helps with drainage and moisture control

Types of Above Ground Pools

Before choosing a base, it’s important to understand the different types of above ground pools:

• Steel Frame Pools: Durable and affordable, these pools have metal frames and walls.
• Resin Frame Pools: Made with plastic components, these resist rust and corrosion better than steel.
• Hybrid Pools: Combine steel and resin components for a balance of strength and durability.
• Inflatable Pools: Temporary options that are easy to set up and take down.

Preparing the Ground

Assessing the Site

• Choose a level area away from trees and structures
• Check for underground utilities before digging
• Evaluate soil conditions for stability

Leveling the Ground

Ensuring a level surface is critical for pool stability and safety. Methods include:

• Using a long level and stakes to identify high and low spots
• Removing soil from high areas and filling low areas
• Using a plate compactor to create a firm, level surface

Dealing with slightly sloped yards:

• For minor slopes, you can build up the low side with compacted soil or sand
• For steeper slopes, consider partial excavation or building a retaining wall

Removing Grass and Debris

While it’s possible to install a pool on grass, removing the turf is generally recommended:

• Use a sod cutter or shovel to remove grass and roots
• Clear the area of rocks, sticks, and other debris
• Treat the area with a weed killer to prevent future growth

Base Options for Above Ground Pools on Grass

Here’s a comparison of popular base options:

Sand Base

A sand base is a popular and affordable option:

• Use masonry sand or silica sand
• Create a layer 2-3 inches deep
• Compact and level the sand carefully

Solid Foam Panels

Foam panels provide insulation and a smooth surface:

• Use extruded polystyrene foam boards
• Install in a single layer or multiple layers for added cushioning
• Tape seams to prevent shifting

Commercial Pool Pads

Specially designed pool pads offer protection and cushioning:

• Available in various thicknesses and sizes
• Easy to cut and fit to your pool shape
• Often made from geotextile materials for durability

Preparing the Ground

Proper site preparation is crucial for the stability, safety, and longevity of your above ground pool. Here are the key steps to prepare the ground:

Assessing the Site

Choosing the right location:

• Select a level area away from trees, power lines, and structures
• Ensure adequate sunlight exposure
• Consider privacy and local zoning regulations

Checking for underground utilities:

• Contact your local utility companies to mark underground lines
• Avoid placing the pool over septic tanks, leach fields, or buried cables

Evaluating soil conditions:

• Test soil stability and drainage
• Identify any areas with poor soil that may need additional preparation

Leveling the Ground

Importance of a level surface:

• A level base is critical for structural integrity and even water distribution
• Uneven ground can cause stress on the pool walls and liner

Methods for leveling:

1. Using string lines and stakes to identify high and low spots
2. Removing soil from high areas and filling low areas
3. Using a laser level for precise measurements
4. Compacting the soil with a plate compactor

Dealing with slightly sloped yards:

• For minor slopes, build up the low side with compacted soil or sand
• Consider partial excavation for steeper slopes
• Use retaining walls for significant grade changes

Removing Grass and Debris

Pros and cons of removing grass:

• Pros: Prevents grass regrowth, provides a cleaner base
• Cons: More labor-intensive, may require additional ground cover

Clearing rocks and other debris:

• Remove all rocks, sticks, and roots from the pool area
• Fill any holes or depressions with compacted soil
• Consider applying a weed killer to prevent future growth

Base Options for Above Ground Pools on Grass

When installing an above ground pool on grass, choosing the right base is crucial for stability, safety, and longevity. Here’s a comparison of different base options:

Sand Base

Sand is a popular and affordable option for above ground pool bases:

Advantages:

• Inexpensive and widely available
• Easy to level and shape
• Provides a soft, cushioning surface

Disadvantages:

• Can wash away over time
• May allow grass to regrow if not properly prepared

Required depth: Create a layer 2-3 inches deep

Types of sand to use:

• Masonry sand
• Avoid play sand or beach sand

Solid Foam Panels

Solid foam panels offer insulation and a smooth surface:

Benefits:

• Excellent insulation properties
• Creates a smooth, even surface
• Helps maintain water temperature

Installation process:

1. Clear and level the ground
2. Lay out foam panels in a single layer
3. Cut panels to fit the pool shape
4. Tape seams to prevent shifting

Durability considerations:

• May compress over time
• Can be damaged by sharp objects

Commercial Pool Pads

Specially designed pool pads offer protection and cushioning:

Types available:

• Foam-based pads
• Geotextile fabric pads
• Rubber composite pads

Features and benefits:

• Durable and long-lasting
• Resistant to mold and mildew
• Provides a smooth surface for the pool liner

Installation tips:

• Ensure the ground is level before installation
• Overlap sections slightly to prevent gaps
• Secure edges with landscape staples if needed

Protecting the Grass Under the Pool

Even if you choose to install your pool directly on grass, it’s important to protect the lawn:

Using Ground Cloth or Landscape Fabric

Benefits of ground protection:

• Prevents grass and weeds from growing through
• Provides an additional barrier against sharp objects
• Helps with moisture control

Installation techniques:

1. Mow the grass as short as possible
2. Remove any rocks or debris
3. Lay the ground cloth or landscape fabric
4. Overlap seams by at least 6 inches
5. Secure edges with landscape staples

Choosing the right material:

Temporary vs. Permanent Solutions

Consider whether your pool installation is temporary or permanent:

Temporary installations:

• Pros: Less damage to lawn, easier to move or remove
• Cons: May not be as stable, requires more frequent maintenance

Permanent installations:

• Pros: More stable, longer-lasting
• Cons: Permanent changes to landscape, more expensive

Additional Considerations

When installing an above ground pool on grass, there are several important factors to keep in mind beyond just the base material:

Drainage

Importance of proper drainage:

• Prevents water accumulation around the pool
• Reduces risk of soil erosion and pool instability
• Helps maintain lawn health around the pool area

Creating a slight slope for water runoff:

• Aim for a 1-2 inch slope away from the pool over a 4-foot distance
• Use a level and stakes to ensure proper grading

Installing drainage systems:

• Consider a French drain around the pool perimeter
• Use gravel or crushed stone to improve water dispersion
• Install catch basins if needed for areas with poor natural drainage

Pool Chemistry and Grass Health

Effects of chlorine and other chemicals on grass:

• Chlorine can damage or kill grass if spilled frequently
• High pH levels can also negatively impact lawn health

Preventing chemical damage to surrounding lawn:

• Use a pool cover to minimize splashing and evaporation
• Be careful when adding chemicals to avoid spills
• Rinse off pool toys and equipment on a hard surface, not the grass
• Consider using saltwater or alternative sanitation systems

Maintenance of the Pool Base

Regular maintenance of your pool base is crucial for longevity and stability:

Checklist for regular base maintenance:

• Inspect the base for signs of settling or erosion
• Check for gaps between the pool and the base material
• Ensure proper drainage is maintained around the pool
• Reapply or level base material as needed
• Monitor for grass or weed growth under the pool liner
• Check for any damage to the pool liner caused by the base

Installation Process

Once you’ve prepared the base for your above ground pool, it’s time to move on to the actual installation. Here’s a step-by-step guide for installing an above ground pool:

Step-by-Step Guide

1. Lay out the bottom rails: Place the bottom rails in a circle according to the manufacturer’s instructions. Use a tape measure to ensure the circle is the correct size.
2. Install the wall: Unroll the metal wall and insert it into the bottom rails. This typically requires at least 2-3 people. Secure the ends of the wall with bolts.
3. Install vertical supports: Attach the vertical supports to the bottom rails and wall. Make sure they are plumb (perfectly vertical).
4. Add the top rails: Connect the top rails to the vertical supports, creating a sturdy frame.
5. Install the pool liner: Carefully place the liner inside the pool, making sure it’s centered. Secure it at the top with coping strips.
6. Attach the skimmer and return: Install the skimmer and return fittings according to the manufacturer’s instructions.
7. Fill the pool: Begin filling the pool with water, smoothing out wrinkles in the liner as it fills.
8. Install the pump and filter: Set up the pump and filter system, connecting all necessary hoses.

Common Mistakes to Avoid

• Rushing the process: Take your time to ensure everything is level and properly installed.
• Ignoring manufacturer instructions: Always follow the specific guidelines for your pool model.
• Skimping on the base preparation: A poorly prepared base can lead to major issues down the line.
• Not checking for level frequently: Constantly check that everything remains level throughout the installation.
• Failing to properly secure the wall: Ensure the wall is securely bolted and all supports are firmly in place.

Safety Considerations

Safety should be a top priority when installing and using an above ground pool. Here are some essential safety measures:

• Install a sturdy, lockable fence around the pool area
• Use a pool cover when the pool is not in use
• Install pool alarms to alert you if someone enters the pool area
• Keep rescue equipment nearby, such as a life ring or reaching pole
• Establish and enforce pool rules for all users
• Ensure proper chemical balance to prevent health issues
• Never leave children unattended near the pool

Cost Comparison of Base Options

When considering what to put under your above ground pool on grass, it’s important to factor in the costs. Here’s a comparison of different base materials and installation methods:

Keep in mind that these costs can vary depending on your location, the quality of materials, and whether you choose professional installation or DIY.

Environmental Impact

When installing an above ground pool on grass, it’s important to consider the environmental impact:

Eco-friendly base options:

• Recycled rubber mulch: Made from recycled tires, provides good drainage
• Cork panels: Sustainable and biodegradable
• Recycled plastic deck tiles: Durable and made from recycled materials

Minimizing damage to the lawn:

• Use ground cloth or landscape fabric to protect grass
• Consider removable pool bases for temporary installations
• Aerate and reseed the area after pool removal

Water conservation considerations:

• Use a pool cover to reduce evaporation
• Maintain proper chemical balance to extend water life
• Consider a saltwater system to reduce chemical usage
• Reuse pool water for watering plants when draining

Troubleshooting Common Issues

Even with careful preparation and installation, you may encounter some issues with your above ground pool. Here’s a table of common problems, their causes, and solutions:

Dealing with Ground Settling

One of the most common issues with above ground pools is ground settling. This can cause the pool to become unlevel over time. To address this:

1. Monitor the water level regularly
2. If you notice significant unevenness, partially drain the pool
3. Add or remove material from the base as needed
4. Use a leveling compound designed for pools to make minor adjustments

Preventing Liner Damage

The pool liner is crucial for maintaining water integrity. To prevent damage:

• Remove sharp objects from the pool area
• Use a pool liner pad for extra protection
• Maintain proper water chemistry to prevent degradation
• Avoid dragging heavy objects across the liner

Maintaining Water Quality

Proper water maintenance is essential for a safe and enjoyable swimming experience:

• Test water regularly (at least weekly)
• Maintain proper pH levels (7.2-7.6)
• Use a pool cover when not in use to reduce debris
• Run the filter system daily
• Shock the pool regularly, especially after heavy use

FAQ

Q: Can you put an above ground pool directly on grass?
A: While it’s possible, it’s not recommended. Placing a pool directly on grass can damage the lawn and create an unstable base for the pool. It’s best to prepare the ground properly first.

Q: How long can you leave a pool on grass?
A: Leaving a pool on grass for more than a few days will likely kill the grass underneath. After about 1-2 weeks, the grass will likely be dead due to lack of sunlight and air.

Q: What’s the best thing to put under an above ground pool?
A: The best options include:

• Sand (2-3 inches deep)
• Solid foam panels
• Commercial pool pads

Q: Do you need sand under an above ground pool?
A: While not strictly necessary, sand is a popular and affordable option for creating a level, stable base. A 2-3 inch layer of masonry or silica sand is recommended.

Q: How do I level an uneven yard for a pool?
A: To level an uneven yard:

1. Use stakes and string to identify high and low spots
2. Remove soil from high areas and fill low areas
3. Use a plate compactor to create a firm, level surface
4. Add sand or your chosen base material and level again

Q: Can I put an above ground pool in the ground?
A: Some above ground pools can be partially or fully installed in-ground. However, this requires proper excavation, drainage considerations, and potentially additional structural support. Always consult with the manufacturer and local building codes.

Q: How do I prepare my lawn for an above ground pool?
A: Prepare your lawn for an above ground pool following the below steps:

1. Choose a level area away from trees and structures
2. Remove grass and any debris
3. Level the ground
4. Add a layer of sand or other base material
5. Install a ground cloth or pool pad for extra protection

Q: Will chlorine from the pool kill my grass?
A: Yes, chlorine and other pool chemicals can damage or kill grass if spilled frequently. Use a pool cover to minimize splashing and be careful when adding chemicals.

Q: What’s the cheapest way to level ground for a pool?
A: The most cost-effective method is usually to do it yourself using basic tools like a shovel, rake, and level. Remove high spots, fill in low areas, and use a plate compactor to create a firm surface.

Q: How do I install an above ground pool liner on grass?
A: It’s not recommended to install a pool liner directly on grass. Prepare the ground first by removing grass, leveling the area, and adding a proper base material before installing the liner.

Q: Can I put a pool on artificial turf or synthetic grass?
A: While artificial grass holds up better than natural grass, it’s still not ideal for long-term pool installation. It’s best to remove the turf and prepare a proper base for the pool.

Q: What’s the difference between pool ground cloth and tarp?
A: Pool ground cloth is specifically designed for use under pools and is more durable and puncture-resistant than a standard tarp. It also allows for better drainage and air circulation.

Q: How do I maintain grass around an above ground pool?
A: Maintain grass around above ground pool:

• Use a pool cover to minimize chemical and water spillage
• Create a barrier around the pool with pavers or gravel
• Water and fertilize the surrounding grass regularly
• Trim grass edges to prevent growth into the pool area

Q: Can I set up a temporary pool on grass without killing it?
A: For very short-term use (a few days), you might be able to set up a pool on grass without permanent damage. However, for any extended period, the grass will likely suffer. It’s best to use a temporary location like a patio or prepare a dedicated area for the pool.

Wrapping Up

Installing an above ground pool on grass requires careful planning and preparation. While it’s possible to set up a pool directly on grass for short periods, a proper base is essential for long-term use and stability. Options like sand, foam panels, or commercial pool pads provide the best foundation. Remember to consider factors such as leveling, drainage, and grass protection. With the right preparation and maintenance, your above ground pool can provide years of enjoyment while minimizing damage to your lawn.

Experience luxury at home with Clearwater Pools & Spas. We have three stores in the Greater Richmond Region, Virginia and a full service department. We sell round and oval Above Ground Pools from 15 ft to 18’x33’ ft.

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