How to Prep the Base for Artificial Grass

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Removal of Existing Grass

To begin with the installation of artificial grass, stop watering your lawn about two weeks to one month before the process. This will make it easier to remove unhealthy and dead grass. You may also want to apply a weed killer to accelerate the dying of existing grass and other plants. It’s advisable to remove the dead grass promptly to prevent heavy weed growth, which could lead to additional expenses for removal.

During the removal process, about 2 inches of grass and soil should be extracted from the top layer. If you're tackling this as a DIY project, an aluminum landscape rake will help you gather the dead grass and soil once it dries. Professionals often use sod cutters to ensure a slick surface that can be compacted thoroughly, avoiding future soil settling bumps.

Preparing Turf Base - Manufacturer Recommendations

Manufacturers suggest that the optimal base layer for artificial turf is a Class II road base. They advise removing about 2 inches of soil, especially around areas with robust root systems. It's important to apply a heavy layer of weed killer across the surface and even consider using a weed prevention product that targets seeds. You can lay down a weed barrier cloth, however, keep in mind that it may trap bacteria rather than effectively preventing weed growth. For pet-friendly artificial lawns, we advocate using a potent weed preventer instead.

Next, an even layer of class II road base material, around 2-3 inches thick, should be spread over the surface and compacted heavily with a stamp compactor. Ensure uniformity across the road base before compaction. While compacting, follow a circular motion rather than going back and forth, moving both clockwise and counterclockwise to ensure thorough compaction, especially in corners near concrete edging.

Preparing Turf Base - for DIY Installers

For those opting for a DIY approach, obtaining heavy machinery and materials as per manufacturers' standards can be challenging. Therefore, homeowners often prepare the sub-base layer a little differently.

To control costs, try not to rent pricey machinery; instead, use manageable tools. Start by clearing the area and applying a weed killer. For the artificial grass underlay, decomposed granite can be a more accessible alternative to road base. Spread about 2 inches of decomposed granite evenly using a push broom, then compact it with a sturdy roller. Ensure that you roll in multiple directions for effective compaction.

To protect your base from being washed away, applying a stabilizer to the decomposed granite after compaction is crucial. This step secures your base to hold the nails for the artificial turf. Be certain to allow adequate drying time before proceeding with the turf installation.

Preparing Turf Base - Over Concrete

Installing artificial grass over concrete is feasible if drainage issues and design obstructions are not present. Proper drainage beneath the turf is vital to avoid mold. Before installation, it’s prudent to smooth out any sharp concrete edges to allow for easy gluing. Heavy-duty adhesives may stain concrete, but we recommend gluing turf to minimize wrinkling and movement due to temperature changes.

Preparing Turf Base - Pet-Friendly Lawns

The base preparation for pet-friendly turf mirrors that of traditional synthetic lawns. However, we suggest laying down a 1/4 inch layer of Zeofill over the compacted base before installing your pet-friendly artificial grass. Zeofill helps mitigate pet odors by absorbing ammonia from urine until you can clean the area thoroughly. Moreover, remember that a weed barrier is not advisable for prepping the sub-base material for pet turf.

If your artificial grass lawn has depressions, incorporating a French drain can expedite water movement. While not mandatory, a French drain can assist in averting odors from developing in pet turf systems.

Preparing Turf Base - On Slopes or Hills

Prepping the base for artificial turf on hills or slopes may require additional steps to ensure stability and prevent shifting over time.

Slopes up to 15 degrees

For slopes of this angle, laying wire mesh such as chicken wire prior to adding road base is advisable. Compact the area according to manufacturer guidelines. This wire mesh will enhance security once the artificial turf installation begins.

Slopes greater than 15 degrees

For more significant slopes, utilize a stabilization membrane cell before adding your road base. After compacting the road base, apply a thin 1/2 inch layer of decomposed granite and continue with compaction.

Preparing Turf Base - Putting Greens

The preparation for a putting green's base is akin to regular turf installation, but with more emphasis on grading and leveling, essential for consistent gameplay and ball roll. Due to the short pile height of putting green turf, even minor inconsistencies are very visible, making professional installation a recommended choice.

During the installation of a putting green, professionals add a very thin layer of decomposed granite on the compacted road base to refine the surface even further.

Preparing Turf Base - Heavy Traffic or Drivable Grass

In areas designated for heavy foot traffic or vehicle use, the turf base layer requires added stability. To create drivable grass, consider employing geotextile permeable pavers. Follow the manufacturer's base layer preparation and place these paver tiles before laying down the artificial turf.

We hope this guide provides clarity on various base preparation scenarios for your artificial turf project. Once the grass is laid, correcting base preparations can become nearly impossible, often compromising installation quality. Always ensure your installation team uses high-quality materials and follows proper sub-base preparation.

Frequently Asked Questions About Prepping the Ground for Artificial Turf

Do You Put Underlay Underneath Artificial Turf?

In addition to creating a solid foundation for artificial grass, certain underlayments may be necessary based on intended use. Options include drainage layers, weed barriers, and padding beneath the turf to enhance comfort and longevity.

What Happens If You Skip The Base Layer For Artificial Grass?

Forgoing the base layer can lead to numerous complications, jeopardizing the turf's durability and overall performance. Issues may include poor drainage, uneven surfaces, rampant weed growth, and instability. Over time, an inadequate base can lead to shifting soil, creating dips and hazards.

What Is The Best Base to Lay Artificial Grass?

Class II Road Base is the recommended base material for artificial grass. This material forms a solid foundation commonly used in professional installations. DIY installers without access to this material should consider decomposed granite along with a stabilizer.

What Should I Put Down Before Artificial Grass?

Before installing artificial grass, the natural grass and about 2-3 inches of soil should be removed, followed by applying a heavy layer of weed killer. Then, either Class II Road Base or Decomposed Granite should be utilized for the base layer, with double compaction suggested for strength.

Once the base is established, any desired accessories such as drainage grids or padding layers can be added. For pet turf, a drainage layer is highly recommended beneath the artificial grass for efficient water flow and ventilation.

What Tools Are Needed To Install An Artificial Grass Base?

The essential tools for installing artificial grass and the base material include:

• Rake
• Shovel
• Wheelbarrow
• Nails and Stakes
• Landscape Fabric (Optional Weed Barrier)
• Plate Compactor or Lawn Roller
• Utility Knife

Can I Use A Paver Base For Artificial Turf?

Using a paver base for artificial turf is viable based on project requirements. However, installing pavers may be more costly than typical turf base material, leading to limited cost-effectiveness. Generally, artificial grass is found installed over pre-existing pavers.

What To Put Under Artificial Grass For Drainage?

For optimal drainage, choose artificial grass with full permeability to allow water escape through the backing. Additionally, drainage grids can be utilized to create air voids for ventilation and water movement. When serious drainage issues arise, French drain systems may be warranted.

Other Common Questions About Artificial Grass

How do I Groom the Turf for Optimal Settling and Stability?

Follow these steps for grooming your turf appropriately:

1. Begin with a power brush featuring heavy bristles, brushing against the grain to stand the grass blades upright.
2. Next, apply the infill or durafill sand evenly throughout the turf, considering anti-bacterial options that are safe for pets and children.
3. After spreading the sand, lightly power brush the turf once more to gently guide the granules into the base of the grass.
4. Conclude by removing any excess debris to keep the turf surface clean and useable.

How do I Apply Filler to the Turf Installation?

To apply infill, adhere to these guidelines:

1. Utilize a heavy-bristled power brush to uplift the grass blades for preparation.
2. Evenly distribute silica sand or infill across the turf, targeting 2-3 lbs per square foot for balanced support.
3. Lightly brush the infill into the grass blades’ base with multidirectional strokes.
4. Clear excess material from the surface, ensuring all infill is secured.
5. Regular brushing while the turf is in use is essential to maintain a well-groomed appearance.

How do I Install Bender Board to Separate the Turf Areas?

For a seamless bender board installation, follow these steps:

1. Prepare the area by clearing debris and vegetation where you wish to create a boundary.
2. Measure and mark the length of the division between turf areas using stakes or flags.
3. Excavate a trench along the marked boundary, ensuring it is half the height of the bender board.
4. Place the bender board into the trench, ensuring a flush alignment with the ground.
5. Secure it using stakes or anchors spaced at 4-6 feet intervals.

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6. If necessary, connect multiple bender boards by overlapping them slightly and using connectors for a seamless finish.

7. Backfill the trench with soil and compact it gently, smoothing out the ground on both sides.

How do I Relocate Sprinklers and Modify Irrigation Lines if Necessary?

1. Identify any existing sprinklers designated for capping at the pipe level to prevent leakage.
2. Modify the sprinkler or drainage system if required, adjusting positions and connections.
3. Carefully mark the locations of capped sprinklers to avoid creating low spots.
4. Secure wiring by using u-nails to fasten it above the subgrade surface.

How do I Cap Existing Sprinklers That Will Not be Used?

1. Identify unnecessary sprinklers due to landscaping changes.
2. Cap them at the pipe level using appropriate caps found at hardware stores.
3. Turn off the water supply before starting the capping process.
4. Securely fasten the caps and ensure no leaks are present after restoring water pressure.

If you're contemplating the installation of artificial turf in your yard, it’s crucial to consider the underlying base. A well-prepared base is vital for ensuring your artificial lawn remains vibrant and free from weeds for an extended period.

The Key Ingredients for an Artificial Grass Base

• Landscape fabric: This acts as a weed barrier to prevent unwanted growth while retaining dirt and rock for a stable base. Ensure to overlap fabric panels during installation.
• Crushed rocks: Gravel sized between 3/4 inch to 1 1/2 inch, such as crushed granite or limestone, allows for optimal drainage and stability.
• Rock fines or screening: These small particles create a smooth surface atop the crushed rocks.
• Infill material: Artificial grass benefits from infill brushed in between the blades to keep them upright. Options include silica sand or anti-microbial alternatives like Envirofill, requiring a few pounds per square foot.

Why Choose Artificial Grass?

Reasons to select artificial grass include:

• No more mowing or watering, reducing maintenance time and costs.
• Durability against pets and children, leading to low upkeep.
• Modern designs look incredibly realistic, potentially fooling neighbors.
• Consistent greenery regardless of weather conditions, unaffected by fading.
• No need for fertilizers or pesticides, making it environmentally safer.

Constructing the Ideal Base Layer

A stable surface should incorporate 2 to 2.5 inches of crushed rock aggregate that is well compacted. Following this, small fine rock material like decomposed granite creates an interlocking, stable layer.

Prepping the Ground for Artificial Turf

1. Remove unwanted grass and debris while excavating 2-3 inches of topsoil.
2. Grade and level the ground, filling low spots.
3. Compact the exposed subsurface.
4. If desired, place landscape fabric down before adding rocks.
5. Spread crushed rock aggregate in a 2 inch thick layer and compact it thoroughly.
6. Layer fine rock to achieve your final grade of 1 to 2 inches.
7. Smooth any uneven areas to ensure a flat base.
8. Lightly mist the finished base with water and compact again.

This groundwork prevents wrinkles or ripples in the finished product.

Consequences of Skipping the Base Layer

Though it may be tempting to install artificial turf directly on bare soil or concrete, omitting the base layer invites various issues, such as:

• Poor drainage resulting in water pooling on the surface.
• Shifting soil leading to bumps and dips in the turf.
• Weeds easily sprouting through unstable ground.
• Overall installation failure due to movement beneath the turf over time.

How to Apply Filler to Turf Installation

To apply infill material:

1. Brush the turf blades upright with a stiff brush.
2. Distribute silica sand or chosen infill evenly across the surface.
3. Lightly encourage the infill down through the blades using multidirectional strokes.
4. Remove any excess material that didn’t settle in the grass.
5. Regular upkeep with brushing helps to maintain an appealing appearance.

Do I Need Irrigation for Artificial Turf?

While artificial grass doesn’t require routine watering, some scenarios make irrigation beneficial:

• In high-temperature regions, occasional misting can ensure freshness.
• For grassy slopes, irrigation aids in stability.
• Nearby natural grass may necessitate overlap in watering.
• Synthetic grass around pools can benefit from rinsing.

The Conclusion: What to Put Underneath Artificial Grass

Investing time into understanding the base preparation for your artificial grass installation can yield long-lasting benefits.

A properly established base lays the foundation for a stunning, resilient lawn. Follow this guidance for a successful outdoor space!

If you're eager to explore more about Residential Turf Grass, contact us today for a professional consultation!