No, you should never use building sand for artificial grass. It is crucial to use a specific type of sand called silica sand, also known as kiln-dried sand, for the infill.
Why Building Sand Is Unsuitable for Artificial Grass
Building sand, often used for mortar or paving, is not designed for artificial turf infill for several important reasons:
- Particle Size and Consistency: Building sand is generally coarser and less uniform in particle size compared to silica sand. This can lead to an uneven finish and poor performance.
- Moisture Retention: Building sand is not kiln-dried, meaning it retains more moisture. This can hinder proper drainage within your artificial lawn, potentially leading to issues like moss growth, unpleasant odors, and a longer drying time after rain.
- Compaction Issues: It tends to compact easily when wet, which can make your artificial grass feel hard, reduce its permeability, and prevent the grass blades from standing upright effectively.
- Impurities: Building sand often contains silt, clay, and other organic impurities. These can promote weed growth, stain the turf, or affect its long-term appearance and hygiene.
- Lack of Performance Benefits: It doesn't offer the necessary support, protection, or stability that specialized infill sand provides for artificial grass.
The Right Choice: Silica Sand (Kiln-Dried Sand)
For optimal performance and longevity of your artificial lawn, always use silica sand. This type of sand is specifically processed to be the ideal infill:
- Fine and Uniform: Silica sand is a very fine sand, thanks to being dried in an oven to remove all moisture. This fine, uniform consistency allows it to settle evenly into the turf's backing, providing stable support.
- Excellent Drainage: Being kiln-dried means it's free of moisture and won't clump, ensuring superior drainage. Water can pass through easily, preventing pooling and keeping your lawn dry.
- Provides Ballast and Support: The weight of the silica sand acts as ballast, holding the artificial grass carpet firmly in place and preventing wrinkles or movement. It also helps the synthetic blades stand upright, maintaining that freshly cut look.
- UV Protection: The infill protects the grass backing from harmful UV rays, extending the lifespan of your artificial turf.
- Weed and Pest Deterrent: Its dense, inorganic nature helps to inhibit weed growth and can deter pests.
- Temperature Regulation: It can help to regulate the temperature of the turf surface by reflecting sunlight.
Comparing Sand Types
Here's a quick comparison to highlight the differences:
| Feature | Building Sand | Silica Sand (Kiln-Dried Sand) |
|---|---|---|
| Particle Size | Coarser, irregular | Very fine, uniform |
| Moisture Content | High (not dried) | Extremely low (kiln-dried) |
| Impurities | Can contain silt, clay, organic matter | Very clean, minimal impurities |
| Compaction | Prone to compaction, poor drainage | Resists compaction, excellent drainage |
| Purpose | Mortar, bricklaying, general construction | Artificial turf infill, sandblasting |
| Benefits for AG | None; detrimental | Ballast, UV protection, drainage, blade support |
Practical Insights for Infill Application
Proper application of silica sand is key to maximizing the benefits for your artificial grass.
- Ensure Dryness: Always apply infill to a completely dry artificial lawn to ensure even distribution.
- Even Spreading: Use a drop spreader or broadcast spreader for the most consistent application. Avoid simply dumping piles of sand, which can lead to uneven areas.
- Brush In: After spreading, use a stiff-bristled broom, power broom, or even a leaf blower (on a low setting) to work the sand deep into the grass fibers. This ensures it settles into the backing and helps the blades stand tall.
- Recommended Quantity: The amount of infill needed can vary based on the pile height and density of your artificial grass, but typically ranges from 3-5 kg per square meter. Always check the manufacturer's recommendations for your specific turf.
- Top-Up as Needed: Over time, infill may settle or be displaced. Periodically check your lawn and top up the infill as needed to maintain its performance and appearance.
By choosing and properly applying silica sand, you ensure that your artificial grass remains beautiful, functional, and durable for many years to come. For more detailed guidance on artificial grass installation and maintenance, consider resources from reputable landscape suppliers like Artificial Grass Direct or Grass Direct.
