Introduction

Artificial grass is a popular choice for gardens, balconies, playgrounds, sports facilities, and commercial spaces. It provides a green appearance throughout the year and generally requires less maintenance than natural grass. However, before planning an installation, one common question comes up: Can I lay artificial grass on top of existing turf?

The short answer is that it depends on what type of turf is already present. If you have natural grass growing in soil, installing artificial grass directly over it is not recommended for a permanent installation. If you already have artificial turf, the existing surface and the base beneath it need to be inspected before deciding whether a new layer can be installed.

The reason is simple. Artificial grass needs a stable, level, and well-drained foundation to perform properly. Covering an unsuitable surface may cause uneven areas, poor drainage, loose seams, and premature damage.

At Gallant Sports, sports surface planning involves more than selecting the right synthetic grass. Ground preparation, drainage, surface stability, and the intended use of the facility all play an important role. This guide explains when artificial grass can be laid over an existing surface, what problems to avoid, and how to prepare the ground for a reliable installation.

Can You Lay Artificial Grass on Top of Existing Turf?

The answer depends on the existing surface, the condition of the ground, and how the area will be used.

For permanent lawns and sports facilities, the safest approach is to assess the existing surface first and prepare a base that suits the application. This helps improve durability, drainage, and surface consistency.

Why Should You Avoid Laying Artificial Grass Directly Over Natural Grass?

Installing artificial grass over an existing lawn may appear to be an easy way to save time and installation costs. However, skipping ground preparation can create problems that are difficult to fix after the new surface has been installed.

Here are the main reasons why direct installation over natural grass is usually a poor long-term solution.

1. The Ground Can Become Uneven

Natural grass grows over soil containing roots, organic matter, and moisture. When this material starts to decompose beneath artificial grass, the ground may settle at different rates.

As a result, some areas may become lower than others. These uneven patches can affect the appearance of a lawn and create problems on a sports surface where players need consistent footing.

Better approach: Remove the existing grass and unsuitable organic material, then grade and compact the base according to the installation requirements.

2. Drainage Problems May Develop

Proper drainage is essential for artificial grass. Although many synthetic grass products have perforated backing that allows water to pass through, the water still needs somewhere to go after it reaches the underlying base.

If water becomes trapped in the old grass, soil, or an unsuitable underlying layer, it can lead to persistent dampness, unpleasant odours, and muddy areas around the edges.

This is particularly important in India, where heavy monsoon rainfall can expose weaknesses in poorly prepared outdoor surfaces.

Better approach: Assess the soil, slope, drainage outlets, and permeability of the base before installation.

3. Weeds May Grow Through the Surface

Artificial grass reduces the need for lawn maintenance, but it does not automatically prevent all weed growth. Existing roots and vegetation beneath an improperly prepared surface can contribute to unwanted growth around joints and edges.

Seeds may also enter through the artificial grass itself, particularly where dust, leaves, and other organic debris accumulate.

Better approach: Remove existing vegetation and use a suitable weed-control or separation membrane where the specified installation system requires one. A membrane cannot replace proper ground preparation or eliminate every source of weeds.

4. The Surface May Feel Soft or Unstable

Artificial grass used for football, cricket, hockey, and other sports requires a foundation suited to the activity. A layer of natural grass and soil cannot provide the same predictable support as a properly designed and compacted sub-base.

If the foundation shifts or settles, players may experience inconsistent footing. On a sports field, this can affect playability and increase the likelihood of trips or slips.

Better approach: Choose a base system based on the intended sport, expected foot traffic, site conditions, and performance requirements.

5. The Artificial Grass May Wear Out Sooner

Artificial grass is designed to withstand regular use, but its lifespan depends on more than the quality of the grass fibres. Poor support, standing water, movement at the seams, and inadequate edge fixing can all contribute to premature wear.

Repairing these problems later may require lifting sections of the turf and correcting the underlying base.

Better approach: Invest in correct preparation at the beginning rather than treating artificial grass as a covering that can hide an unsuitable surface.

How to Install Artificial Grass Properly: Step-by-Step Guide

If you want a durable artificial lawn or sports surface, follow a planned installation process. The exact method varies depending on whether the project involves a residential garden, a playground, or a full-size sports field.

Step 1: Inspect the Existing Surface

Start by identifying what is currently beneath the turf. Is it natural grass and soil, an old artificial lawn, concrete, asphalt, or an existing sports base?

Check for:

• Uneven ground or visible depressions.

• Waterlogging after rainfall.

• Loose or damaged sections of existing turf.

• Tree roots and underground obstructions.

• Cracks in concrete or asphalt.

• Areas where the soil has settled.

This inspection helps determine whether the existing foundation can be reused or needs reconstruction.

Step 2: Remove Natural Grass and Organic Material

For a permanent installation over a natural lawn, remove the grass, roots, and unsuitable topsoil or organic material. The required excavation depth depends on the site and the intended use of the surface.

For example, a small decorative lawn and a football training pitch will not necessarily require the same foundation depth or construction specification.

The objective is to reach a suitable foundation that can support the planned surface without excessive movement.

Step 3: Prepare and Compact the Sub-Base

The sub-base provides the structural support beneath the artificial grass. Depending on the project, it may consist of graded crushed stone or other specified base materials.

The preparation process generally includes:

1. Spreading suitable aggregate in the required layers.

2. Levelling the material to the designed profile.

3. Compacting each layer using appropriate equipment.

4. Checking the finished level and surface consistency.

The base must be stable enough for the expected load and use. Poor compaction can result in settlement, while an unsuitable aggregate or construction method can interfere with drainage.

Step 4: Plan the Drainage System

Drainage should be considered before the turf is installed, not after water begins collecting on the surface.

A well-designed system may use permeable aggregate layers, suitable gradients, drainage channels, or underground drainage pipes, depending on the site.

The design should consider local rainfall, soil permeability, the level of surrounding ground, and the location of appropriate drainage outlets.

For sports fields, the drainage system must work together with the turf backing, any shock pad, and the sub-base. A permeable artificial grass carpet alone cannot compensate for a poorly drained foundation.

Step 5: Install a Suitable Underlay or Shock Pad Where Required

An underlay is not necessary for every artificial grass installation. However, certain applications may require a separation layer, protective layer, or shock-absorbing pad.

For example, a sports system may use a shock pad to achieve the specified impact absorption and playing characteristics. The appropriate pad depends on the sport, the selected turf, and the required performance criteria.

A decorative lawn, on the other hand, may require a different construction approach.

Always follow the turf manufacturer’s system specifications instead of adding an underlay simply because it seems beneficial.

Step 6: Lay and Secure the Artificial Grass

Once the base is ready, the artificial grass rolls can be positioned and aligned.

The installation team should:

• Lay the rolls in the correct direction.

• Align the edges and seams carefully.

• Use the recommended seaming tape and adhesive where required.

• Secure the perimeter using an appropriate fixing method.

• Fit any required sports markings.

• Apply the specified infill, if the turf system requires it.

For sports fields, the turf pile height, fiber type, infill, and shock pad must work together as a complete system. These details influence ball roll, traction, cushioning, and overall playing performance.

Step 7: Inspect the Finished Surface

Before the area is opened for use, check the installation thoroughly.

Inspect the seams, perimeter fixings, surface level, drainage, and any sports markings. Where applicable, verify the infill distribution and required playing characteristics.

For a sports facility, the final inspection should follow the specifications established for the project. Competitive facilities may also require independent testing or certification, depending on the sport and intended level of play.

Can You Install Artificial Grass Over Concrete or Asphalt?

Yes, artificial grass can often be installed over a suitable concrete or asphalt surface. However, the surface must be assessed before installation.

A hard surface may offer a stable foundation, but cracks, standing water, poor gradients, or loose sections can cause problems. The existing surface should be repaired where necessary and checked for suitable drainage.

The installation method also depends on the product. Some systems may be loose-laid and secured at the perimeter, while others may require a specified adhesive or another fixing method.

For a sports application, additional cushioning may be needed to achieve the required impact absorption and playing characteristics.

Before proceeding, confirm that the surface is suitable for the intended activity and that the selected turf system is approved for that type of installation.

Can You Lay Artificial Grass Over Old Artificial Turf?

This is another common question, especially when renovating an older football turf, school playground, or commercial sports facility.

Although it may be physically possible to cover an existing artificial surface, it is generally better to remove the old carpet and inspect the underlying construction.

The existing artificial turf may have flattened fibres, damaged joints, uneven infill, or areas of trapped moisture. Covering these defects will not correct them.

A practical renovation process includes:

1. Removing the old artificial grass.

2. Inspecting the exposed base and drainage system.

3. Repairing depressions, cracks, or unstable areas.

4. Checking whether the existing shock pad remains suitable.

5. Installing the replacement turf using the correct system specifications.

If the original base remains stable and meets the new product’s requirements, it may be possible to reuse it. This can reduce unnecessary reconstruction, although the decision should follow a proper site assessment.

Artificial Grass Installation: Natural Grass vs Prepared Base

The following comparison explains why proper preparation matters for a long-lasting artificial grass installation.

The key difference is not simply the type of grass. It is the quality of the complete installation system beneath it.

What Type of Artificial Grass Should You Choose?

Choosing the right artificial grass is just as important as preparing the foundation. The best product depends on the purpose of the area, the expected foot traffic, and the required playing characteristics.

Gallant Sports provides artificial turf solutions for different sports and applications. Its range includes artificial grass for sports fields and CCGrass Leap™ non-infill artificial turf. The correct product should be selected according to the project requirements rather than appearance alone.

Is It Cheaper to Lay Artificial Grass Over Existing Turf?

Installing artificial grass over an existing lawn may appear cheaper because it seems to reduce excavation and labour. However, the initial saving does not always translate into a lower overall cost.

If the ground becomes uneven, water collects beneath the surface, or the seams begin to separate, repairs can add to the total expense. In some cases, the turf must be lifted before the underlying problem can be fixed.

A more reliable cost estimate should account for:

• Removal of existing grass or old turf.

• Excavation and disposal, where required.

• Sub-base materials and compaction.

• Drainage improvements.

• Artificial grass and any required infill.

• Shock pads, joining materials, and perimeter fixings.

• Installation labour and future maintenance.

Not every project requires complete reconstruction. If an existing concrete surface or sports base is in good condition, part of the foundation may be reusable after inspection.

For an accurate estimate, assess the site first and compare the cost of a proper installation with the potential cost of future repairs.

How to Maintain Artificial Grass After Installation

Artificial grass usually requires less maintenance than natural grass, but it is not maintenance-free. Regular care helps preserve its appearance and performance.

Brush the fibres regularly. Use a suitable brush to remove debris and lift flattened fibres, especially in high-traffic areas.

Remove leaves and dirt. Clear organic debris before it accumulates and affects drainage.

Check the drainage. After heavy rain, inspect the surface for standing water. Persistent pooling may indicate a drainage or base issue that needs investigation.

Inspect the seams and edges. Look for loose joints, lifting corners, or movement that could create a trip hazard.

Maintain the infill when required. For infill-based sports turf, follow the manufacturer’s instructions for redistribution, cleaning, and replenishment. Non-infill systems have different maintenance requirements.

Arrange periodic professional inspections. Sports facilities with frequent use may benefit from scheduled maintenance to assess surface condition, infill levels, and playing performance.

Correct installation and routine maintenance work together to extend the useful life of the surface.

Why Choose Gallant Sports for Artificial Turf Installation?

Choosing artificial grass for a sports project involves several decisions, from selecting the turf to preparing the foundation and planning drainage. Working with an experienced sports infrastructure provider can help bring these elements together.

Gallant Sports offers sports surface solutions, including artificial turf, and supports projects with planning and installation-related services. Its football and futsal solutions cover key elements such as civil work, drainage, shock pads, turf, fencing, lighting, and maintenance support, depending on the project requirements.

Here are some important considerations when planning a project with Gallant Sports:

• Application-specific turf selection: Choose a product that suits the sport, expected use, and required surface performance.

• Ground preparation: Assess the existing land and establish a suitable foundation before laying the turf.

• Drainage planning: Design the base and drainage system to manage water effectively.

• Complete system design: Consider the turf, infill, shock pad, and sub-base as connected parts of the installation.

• Maintenance planning: Establish a maintenance routine suited to the selected turf and usage levels.

You can explore Gallant Sports’ football and futsal solutions or contact the team through the official Gallant Sports website to discuss your project.

The goal is to create a surface that looks good, performs as intended, and remains practical to maintain over time.

Frequently Asked Questions (FAQs)

1. Can I put artificial grass directly over natural grass?

Answer: It is physically possible, but it is not recommended for a permanent installation. Natural grass and roots can decompose, causing uneven areas, soft patches, and drainage problems. Removing the existing grass and preparing a stable base is the better approach.

2. Can I install artificial grass over an existing artificial lawn?

Answer: It is generally better to remove the old artificial grass and inspect the base before installing a replacement. If the foundation is stable and suitable, it may be reused after any necessary repairs.

3. Do I need to remove soil before installing artificial grass?

Answer: Usually, some excavation is needed when converting a natural lawn into a permanent artificial grass installation. The depth depends on the soil condition, drainage, intended use, and specified base construction.

4. Does artificial grass need a drainage system?

Answer: Yes, water must be able to pass through or drain away from the surface. The exact system depends on the turf backing, underlying materials, ground slope, soil conditions, and local rainfall.

5. Can artificial grass be installed over concrete?

Answer: Yes, provided the concrete is stable, suitably graded, and capable of draining water. The turf must also be compatible with the selected fixing method and intended application.

6. Is a shock pad necessary under artificial grass?

Answer: Not for every application. A shock pad may be required for certain sports systems to achieve specified impact absorption and playing characteristics. Its suitability should be determined by the product and project requirements.

7. Can I lay artificial grass over old football turf?

Answer: It is usually preferable to remove the old turf, inspect the foundation, repair any defects, and install the replacement system correctly. Covering a worn surface may conceal problems rather than solve them.

8. How long does artificial grass last?

Answer: Its service life depends on the product, installation quality, traffic, climate, maintenance, and intensity of use. Sports turf and landscape grass may have different warranties and performance expectations, so check the specifications for the selected product.

9. Can artificial grass be installed during the monsoon in India?

Answer: Installation may be possible in suitable weather, but heavy rain can interfere with excavation, compaction, adhesive work, and base preparation. Work should proceed only when site conditions allow the required installation quality to be achieved.

10. Who should install artificial grass for a sports facility?

Answer: For a sports facility, choose a provider with experience in sports turf systems, base construction, drainage, and application-specific performance requirements. The installation should follow the selected manufacturer’s specifications and any relevant sport-specific standards.

Conclusion

So, can you lay artificial grass on top of turf? The answer depends on the existing surface. Installing synthetic grass directly over natural grass is generally not a good long-term solution, while old artificial turf should usually be removed so the foundation can be inspected. Suitable concrete or asphalt may be reused if it is stable and provides proper drainage.

For a successful installation, focus on the complete system: ground preparation, compaction, drainage, turf selection, and correct fixing. These factors are especially important for sports facilities where surface consistency, player movement, and durability matter.

Gallant Sports can help you explore artificial turf solutions for sports fields and other applications. Before starting your project, assess the existing surface and choose an installation system that meets your needs.