Artificial Grass Installation

Plan the installation and measure the area accurately to determine material requirements. Proper measurements help reduce waste, guide layout direction, and ensure all turf sections align consistently.

Excavate 4-6 inches of grass, sod, and loose soil, depending on soil and drainage conditions. Adjust depth as needed to accommodate the base system and turf thickness for proper final grade. Clear debris, roots, and organic material. For larger areas, use a sod cutter to speed up removal. Cap and remove irrigation components (any sprinklers or sprinkler heads) if present.

Establish a rough grade at this stage to support drainage and prepare for base installation.

Subgrade evaluation begins by understanding how the existing soil behaves under real conditions, not just how it is classified. The surface should be exposed and observed after excavation to identify whether the soil is stable, loose, moisture-retaining, or prone to movement. Sandy soils typically allow faster drainage but may shift without proper compaction, while clay or mixed soils can retain water and restrict drainage. Even soils with high sand content can perform poorly if there are underlying layers or a high water table limiting water movement.

Drainage should be evaluated based on actual performance. Areas where water pools, drains slowly, or remains saturated after rainfall indicate restricted drainage conditions. Natural slope also plays a role, as flat areas are more likely to retain water, while properly graded surfaces allow water to move away from the installation area. Inconsistent drainage behavior is often caused by compacted layers, subsurface clay, or groundwater influence, and should be identified before base installation.

Soil stability must be checked by walking the area and applying pressure to detect soft or shifting zones. Any movement, compression, or uneven response indicates that the subgrade may not adequately support the base. Organic material, loose fill, or previously disturbed soil should be removed or stabilized to prevent future settling.

Climate conditions, particularly rainfall intensity and frequency, directly affect how the subgrade performs. Areas with heavy or frequent rainfall require more attention to drainage and base design, as water accumulation beneath the surface can lead to instability over time. Temperature changes can also influence soil moisture and compaction behavior, further affecting long-term performance.

Based on these observations, adjustments should be made to ensure a stable foundation. This may include additional compaction, removal of unsuitable material, installation of a geotextile separation layer, or modifications to base depth and drainage design. Proper subgrade evaluation ensures that the installation is built on a consistent, well-prepared surface capable of supporting the turf system over time.

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A slight slope is essential in artificial grass installation to allow water to move away from the surface and prevent pooling.

Most installations use a 1–2% grade, which means the surface drops about 1–2 inches for every 8–10 feet. This is usually enough to guide water toward edges, drains, or open areas.

In many cases, the existing ground already has a natural slope. If not, the base should be graded during preparation to create a gentle, consistent fall.

Flat surfaces can trap water, especially during heavy rainfall. Even with a well-draining base and permeable turf, water still needs a direction to exit.

The goal is not steepness, but controlled water flow - a smooth, barely noticeable slope that keeps the surface dry and stable over time.

Install protective layers before placing base materials when site conditions require it.

Gopher wire can be installed to prevent burrowing animals from damaging the turf system.

• Lay wire across the entire exposed surface
• Extend wire up along the perimeter edges
• Create a continuous barrier (“cage”) with no exposed soil

This step is optional and typically used in areas with known pest activity.

Edging is installed to define the perimeter and contain the base.

• Common materials: bender board (1×4, 2×4) or metal edging
• Helps maintain clean edges
• Prevents base migration and turf movement over time

Proper edging improves long-term structural integrity and installation accuracy.

Lay 3–5 inches (depending on soil conditions) of crushed angular aggregate as the base. Spread evenly and rough-grade to establish slope and elevation.

View full base preparation steps

1. Stretch the turf

   Pull turf tight across the installation area to remove wrinkles. A carpet kicker may be used if needed.

2. Secure perimeter

   Use 5–6 inch nails spaced every 3–4 inches along edges.

3. Optional interior fastening

   If needed, place nails every 12–24 inches across the field.

1. Final brush

   Power broom or rake the turf to fully integrate infill into the backing and lift the fibers into a natural position.

2. Trim and inspect edges

   Walk the perimeter and remove any excess turf to create clean, precise edges.

Lay 3–5 inches (depending on soil conditions) of crushed angular aggregate as the primary base layer. This material provides structural support and manages water movement beneath the turf surface. It should be spread evenly and roughly graded to establish the desired slope and elevation.

In some installations, the base is built in two stages using a coarser layer for drainage followed by a thinner layer of finer material, such as road base or decomposed granite, to improve surface finish. However, a well-graded aggregate (such as ¾″ minus) can often provide both drainage and compaction within a single layer when properly installed.

The objective is to create a base that is stable, well-draining, and capable of being compacted into a smooth, uniform surface for turf installation.

Lightly moisten the aggregate if needed, then compact it in layers using a vibrating plate compactor to achieve approximately 90–95% compaction. During this process, the base is also shaped and leveled. Because the aggregate contains fines, it can be worked to create a smooth, stable surface rather than a rough, rocky one.

Weed barrier fabric is an optional layer used to reduce weed growth through the turf’s drainage perforations. Its placement depends on the base installation method.

In systems that use multiple layers, such as a drainage layer followed by decomposed granite or road base, the fabric may be installed between layers or directly beneath the turf. In single-layer installations using well-graded aggregate, the fabric is typically placed over the finished compacted base before the turf is installed.

The purpose of the fabric is to limit vegetation growth from below. It does not improve drainage or structural performance and is generally only needed in areas with active roots, organic soil, or aggressive weed conditions.

As the base is installed, the surface is progressively shaped, leveled, and compacted to create a smooth, uniform finish. Minor imperfections are corrected by redistributing the same aggregate material and compacting it in layers until the desired grade and elevation are achieved.

During this stage, establish and confirm a consistent slope of approximately 1–2% (about 1/8″–1/4″ per foot) to allow water to drain across and off the installation area. The slope should be uniform and subtle, directing water away without affecting the appearance of the finished surface.

Lightly moisten the surface if needed and perform a final compaction using a vibrating plate compactor to reach approximately 90–95% compaction. The finished base should be firm, smooth, and properly graded, ready for turf installation.

When well-graded aggregate is used, a separate top layer is generally not required, as both structural support and surface finish are achieved within the same base.