Install Artificial Turf: Guide to Base Materials

May 28, 2025

Install Artificial Turf: Guide to Base Materials

Thinking about installing artificial grass? Whether you’re creating a low-maintenance backyard lawn, a professional-grade putting green, or a durable commercial landscape, what goes under artificial turf is just as important as the turf itself. In this complete guide, we’ll break down every layer, material, and step you need to ensure a successful, long-lasting installation.

A roll of artificial grass is laid out on top of the base.

Why the Base for Artificial Turf Matters

The base beneath artificial grass determines how your turf drains, stays level, and feels underfoot. Without a proper base, even the best synthetic turf won’t last long. Here’s why the base layer matters:

  • Provides stability and drainage
  • Prevents weed growth
  • Supports turf longevity and performance

Learn more about residential turf maintenance tips after installation.

What Are the Layers Beneath Artificial Turf?

1. Subgrade Preparation

The first step is removing existing grass, debris, and vegetation. You’ll need to excavate 3-4 inches depending on project size. Use a plate compactor to compact the soil and avoid uneven settling.

2. Weed Barrier (Geotextile Fabric)

A weed barrier separates the soil from the base material and prevents unwanted growth. It also adds an extra layer of stabilization.

3. Base Material

The base layer is the foundation of your synthetic lawn. It supports turf drainage and prevents shifting.

Top options include:

  • Class II Road Base: A compactable mix that promotes drainage and stability.
  • Decomposed Granite (DG): A finer option that compacts tightly.
  • Crushed Miscellaneous Base (CMB): Often used for driveways, suitable for turf base too.

These materials are great for everything from a small lawn to a commercial putting green turf.

A layer of crushed stone sits beneath the grass.

Optional Layers to Consider

Shock Pads

If you’re installing a playground or high-activity sports turf, adding a shock-absorbing layer improves impact resistance.

Drainage Solutions

For areas with poor drainage, consider adding a perforated pipe system or a more porous aggregate base.

Infill Material for Artificial Grass

After the turf is laid, infill helps keep the grass blades upright and adds weight for stabilization.

Common infill types:

  • Silica sand: A standard option for lawns and landscaping
  • Rubber granules: Best for sports fields and play areas
  • Organic options: Coconut husks or cork for eco-conscious homeowners

Proper infill aids drainage, protects turf fibers, and enhances feel.

Preparing the Ground for Artificial Turf: Step-by-Step

Step 1: Excavate the existing area

Remove the natural grass, 3-4 inches deep.

Step 2: Compact the soil

Use a compactor or plate compactor to stabilize the area.

Step 3: Install the weed barrier

Lay your geotextile fabric evenly.

Step 4: Lay the sub-base

Use class ii road base or decomposed granite. Compact each layer as you go.

Step 5: Lay artificial grass

Position the turf and trim to fit the layout. Pay attention to the grain of the grass for a natural look.

Step 6: Add infill

Use a drop spreader or broadcast spreader to apply infill evenly across the surface.

Step 7: Brush and secure the turf

Brush the turf with a power broom and begin securing the turf around the edges.

Common Installation Mistakes to Avoid

  • Skipping the base layer: Without a solid base, the turf won’t drain or stay flat.
  • Improper compaction: Leads to sinkholes and wrinkling.
  • No weed barrier: Can result in weeds growing through your artificial lawn.

Artificial Turf Installation in Texas: Climate Considerations

Due to Texas’ dry and hot climate, it’s crucial to use materials that support excellent drainage and heat resistance. A well-compacted rock base or decomposed granite will help avoid heat-related expansion or buckling. For pet-friendly yards in Austin, make sure to use antimicrobial infill to manage odor.

Small pebbles are spread evenly across the ground.

FAQs: What Goes Under Artificial Grass?

What is the best base for artificial grass?
The best base is class II road base compacted with a plate compactor. It balances support and drainage.

Can I lay artificial turf directly on soil?
No. Soil shifts with moisture, causing uneven turf. Always install a sub-base.

How deep should the base be for artificial grass?
3-4 inches minimum, depending on usage and soil type.

Key Takeaways: What to Put Under Artificial Turf

  • Always prepare the base before turf installation.
  • Use a weed barrier to prevent regrowth.
  • Choose the right base material like class ii road base, DG, or CMB.
  • Compact each layer with a plate compactor.
  • Add infill to stabilize and enhance the turf surface.
  • Consider climate and drainage issues for long-term success.
  • Follow Magnolia Turf’s expert artificial turf maintenance for lasting results.

Ready to install artificial turf?
Check out Magnolia Turf’s high-performance grass products, read our detailed residential maintenance tips, or contact our Texas-based team for a free consultation on your next turf project.