How to place artificial grass
To place artificial grass, prepare the base by excavating, adding and compacting gravel and sand. Roll out the turf, cut to fit, secure edges with stakes or adhesive, and infill with sand to stand up the blades for a finished, natural look.
Installing artificial grass yourself is achievable with the right preparation and tools. This guide walks you through the process, from site preparation to the final touches, ensuring a durable and attractive synthetic lawn. You’ll need to plan for drainage, proper base materials, and secure fastening.
Begin by defining the area where the artificial grass will be installed. Mark the perimeter using spray paint or stakes. This helps visualize the final layout and ensures you purchase enough material. Remember to account for any curves or irregular shapes in your design.
Excavate the area for the base
The first crucial step is excavation. You need to remove existing vegetation, soil, and any debris from the designated area. Aim for a depth of 3 to 4 inches (7.5 to 10 cm) to accommodate the base layers. This depth is essential for proper drainage and to create a stable foundation that prevents settling.
Ensure the excavated area is level, or has a slight slope away from any structures for water runoff, typically about 1% (1/8 inch per foot). Use a tamper, either manual or plate compactor, to compact the soil at the bottom of the excavated area. This prevents future sinking.
If you are in a region with burrowing pests like gophers, consider installing a layer of hardware cloth (1/2-inch mesh galvanized steel) at the bottom of the excavation before adding your base materials. This acts as a barrier.
Install and compact the gravel base
Add a layer of crushed stone or gravel, typically 1 to 2 inches (2.5 to 5 cm) thick, to the excavated area. This layer is critical for drainage, preventing water from pooling on the surface or beneath the turf. Use a type of gravel that compacts well, such as 3/4-inch crushed stone.
Spread the gravel evenly. Then, compact it thoroughly using a hand tamper or a plate compactor. A well-compacted base is vital for the longevity and stability of your artificial lawn. Repeat this process if adding multiple layers of gravel.
After compacting the gravel, screed the surface smooth. Use a level and a straight edge (like a 2×4) to ensure the base is flat and free of high spots or low spots. The goal is a uniformly compacted and smooth surface.
Add and compact the sand layer
On top of the compacted gravel, add a layer of clean, washed sand, typically 1/2 to 1 inch (1.25 to 2.5 cm) thick. This sand layer provides a smoother surface for the artificial turf to lay on and helps lock the blades in place later. Use angular sand (like mason sand) as it compacts better than round play sand.
Spread the sand evenly. Then, compact this layer as well. A plate compactor is highly recommended here for achieving optimal density and a smooth finish. Ensure the sand layer is also level or has the intended slight slope for drainage.
Some installers prefer to use a decomposed granite (DG) mix for the top layer instead of pure sand. DG compacts very firmly and can offer superior stability, especially in high-traffic areas.
Lay out and trim the artificial grass
Unroll the artificial grass and let it rest in the sun for a few hours. This helps to relax the fibers and make it easier to handle and cut. Position the turf so the blades are facing the desired direction, usually towards the main viewing area.
Carefully unroll the turf over the prepared base. Allow excess material to overhang the edges of your installation area. Use a sharp utility knife or a specialized turf cutter to trim the grass to fit the perimeter. Cut from the back of the turf for cleaner edges.
When trimming, make relief cuts in corners or around obstacles. For seams where two pieces of turf meet, ensure the edges are cut precisely so they butt up against each other without any gaps or overlap. This is crucial for a seamless appearance.
Secure the artificial grass edges
Once the turf is trimmed and in place, you need to secure it. The most common method is using galvanized steel stakes, about 6 inches (15 cm) long. Drive these stakes through the turf backing and into the base material every 6 to 12 inches (15 to 30 cm) along the perimeter and any seams.
Alternatively, you can use landscape adhesive designed for artificial turf. Apply a bead of adhesive along the edges of the turf and press it down onto the base. For very secure installations, especially on hard surfaces like concrete, specialized adhesives or mechanical fastening systems might be used.
If you have a concrete border or edge, you can use turf staples or a strong, weather-resistant adhesive. For a clean edge finish on concrete, some installers cut a small trench around the perimeter and tuck the turf edge into it, securing with adhesive.
Infill the artificial grass
Infilling is the final step and is essential for the appearance and performance of your artificial lawn. Infill material, typically sand (specifically silica sand), is spread over the turf and brushed into the fibers. This helps to keep the blades standing upright, provides cushioning, and adds weight to further secure the turf.
Use a drop spreader to distribute the infill material evenly across the surface. The amount of infill needed varies based on the turf’s pile height and density, but a common recommendation is 1 to 2 pounds per square foot (0.5 to 1 kg per sq meter).
After spreading the infill, use a stiff-bristled brush (a power brush is ideal for larger areas) to work the infill down to the base of the turf blades. Brush in multiple directions to ensure even distribution and to help the blades stand erect. Lightly water the area to help settle the infill.
Other infill options include specialized crumb rubber (for sports fields) or natural materials like cork or walnut shells, each with different benefits and considerations regarding heat retention and antimicrobial properties.
Final brushing and inspection
Once the infill is settled, give the entire lawn a final brushing. This ensures all the grass blades are standing upright and the infill is evenly distributed. Sweep or rake the surface to remove any excess infill or debris.
Inspect the entire installation for any imperfections. Check for loose edges, uneven areas, or gaps. Make any necessary adjustments to ensure a professional and seamless finish. Your new artificial lawn is now ready for use.
Common Mistakes During Artificial Grass Installation
| Step/Tool | Typical Mistake | Consequence |
|---|---|---|
| Excavation Depth | Not digging deep enough | Turf may sit too high, improper drainage, base materials can shift. |
| Base Compaction | Skipping or inadequate compaction | Settling, uneven surface, water pooling, premature wear. |
| Seam Cutting | Imprecise or overlapping seams | Visible seams, tripping hazard, uneven appearance. |
| Infill Application | Too little or no infill | Blades lay flat, looks unnatural, increased heat absorption, reduced lifespan. |
| Edging Security | Loose or unsecured edges | Turf can lift, trip hazard, weed intrusion, premature damage. |
FAQ
How do I handle drainage with artificial grass?
Proper drainage is addressed during the base preparation. The excavated area should have a slight slope (about 1% or 1/8 inch per foot) away from structures. The gravel and sand base layers allow water to percolate through the turf backing and into the ground beneath.
Can I install artificial grass over existing concrete or patio?
Yes, you can install artificial grass over a solid surface like concrete. You’ll typically need to clean the surface thoroughly, potentially add a thin layer of sand or cushioning pad, and then secure the turf using a strong, weather-resistant adhesive designed for outdoor use. Ensure adequate drainage if the concrete doesn’t already have it.
What is the best type of infill for artificial grass?
Silica sand is the most common and recommended infill for residential artificial grass. It helps keep blades upright, adds weight, and provides cushioning. For specific applications like sports fields, crumb rubber is often used. Natural options like cork are also available but may require more maintenance.
How often should artificial grass be cleaned?
Artificial grass generally requires minimal cleaning. For residential use, occasional rinsing with a hose to remove dust and debris is usually sufficient. For stubborn stains or pet waste, mild soap and water can be used. Brushing periodically helps maintain the blade’s upright appearance.