Artificial grass has become a popular alternative to natural lawns, offering low maintenance, year-round greenery, and water conservation. However, the key to a durable, realistic-looking lawn fake grass installation lies in proper preparation and the materials used beneath the surface. In this guide, we’ll break down the essential layers and materials required for a successful artificial turf installation, ensuring longevity, drainage, and comfort.
Why Proper Base Preparation Matters
Before laying artificial grass, the foundation must be carefully prepared. A well-constructed base ensures:
- Proper drainage to prevent water pooling.
- Stability to avoid shifting, wrinkling, or uneven surfaces.
- Weed prevention to maintain a clean appearance.
- Cushioning for safety and comfort (especially for play areas).
Skipping steps or using inferior materials can lead to costly repairs or premature wear. Let’s explore the layers that go under artificial turf.
Step 1: Excavate the Existing Surface
Start by removing the existing lawn, weeds, rocks, or debris. Dig down 3–4 inches to create space for the base materials. For areas with poor drainage (e.g., clay soil), excavate deeper (up to 6 inches) to improve water flow.
Step 2: Install a Sub-Base Layer
The sub-base is the foundation of your artificial grass. It provides stability and drainage. Common materials include:
A. Crushed Rock or Gravel
- Type: Use 3/4-inch crushed stone or Class II Road Base (a mix of gravel and fines).
- Purpose: Creates a solid, permeable layer that compacts well.
- Installation: Spread a 3–4 inch layer and compact it with a vibrating plate compactor.
B. Decomposed Granite (DG)
- Type: A finer material that compacts tightly.
- Purpose: Ideal for areas requiring a smoother finish, like putting greens.
Step 3: Add a Weed Barrier
Even with artificial grass, weeds can sprout along the edges or through seams. A geotextile weed barrier fabric is essential:
- Lay the fabric over the compacted sub-base.
- Overlap seams by 6–12 inches and secure with landscape staples.
- Avoid plastic sheeting, which traps moisture and causes mold.
Step 4: Optional Cushioning Layer
For areas where comfort is a priority (playgrounds, pet zones, or patios), add a shock-absorbing layer:
- Foam Padding: Specialized turf underlay (e.g., EPDM rubber or polyurethane foam).
- Benefits: Adds softness, reduces joint stress, and mimics natural grass feel.
Step 5: Lay the Artificial Grass
Once the base is ready, roll out your lawn fake grass:
- Trim edges to fit the space.
- Ensure the turf blades face the same direction for a uniform look.
- Secure seams with turf tape and adhesive.
Step 6: Apply Infill Material
Infill is brushed into the turf to:
- Weigh down the grass and prevent shifting.
- Protect backing from UV damage.
- Provide cushioning and support blades.
Types of Infill:
- Silica Sand: Affordable and effective for drainage.
- Crushed Rubber: Softens the surface (ideal for playgrounds).
- Organic Options: Cork or coconut fibers (eco-friendly but less durable).
Apply infill evenly using a drop spreader, then brush it into the turf with a power broom.
Step 7: Install Edging
Secure the perimeter with:
- Plastic or Metal Edging: Keeps turf firmly in place.
- Concrete Borders: For a permanent solution around patios or walkways.
Special Considerations
Drainage Systems
In areas with heavy rainfall:
- Install a perforated drainage pipe beneath the sub-base.
- Slope the base 1–2% to direct water away from structures.
Concrete or Hard Surface Installations
Artificial grass can be installed over concrete, but:
- Use foam underlayment for cushioning.
- Drill drainage holes every 6 inches to prevent pooling.
Common Mistakes to Avoid
- Poor Compaction: A loose base leads to uneven surfaces.
- Skipping the Weed Barrier: Weeds will compromise the turf’s appearance.
- Overlooking Infill: Without infill, blades flatten and wear faster.
Maintenance Tips for Longevity
- Rinse the turf occasionally to remove dust and debris.
- Brush the blades monthly to keep them upright.
- Inspect seams and edges annually for wear.
Why Choose Professional Installation?
While DIY is possible, professionals ensure:
- Proper grading and drainage.
- Seamless joins and secure edging.
- Warranty compliance for materials.
For expert lawn fake grass installation in San Jose and surrounding areas, Cal Pro Artificial Turf offers tailored solutions. Call (408) 841-6939 for a free consultation!
The layers beneath artificial grass—sub-base, weed barrier, cushioning, and infill—are critical for performance and durability. By investing in quality materials and proper installation, your lawn fake grass will stay lush, functional, and visually appealing for years. Whether you’re transforming a backyard, pet area, or commercial space, this guide ensures you’ll build a foundation that stands the test of time.