1. There Is No Loose Granular Infill Layer
Traditional infilled artificial turf systems may contain silica sand, rubber or other granular materials between the fibers.
A non-infill system eliminates this loose layer. Rainwater therefore does not need to travel through a separate granular infill layer before reaching the drainage openings in the backing.
This can simplify water movement through the surface, but it does not automatically mean every non-infill turf system will dry faster than every infilled system.
The complete construction remains important.
2. Water Can Pass Through the Turf Backing
Outdoor artificial turf is commonly manufactured with drainage openings in the backing.
A simplified drainage pathway is:
Turf surface → backing drainage openings → base/sub-base → drainage system
The efficiency of this pathway depends on every component.
For example, a turf product can have good laboratory permeability but still experience ponding if the foundation underneath has insufficient drainage capacity or an inadequate gradient.
This is why professional football-turf installation guidance treats basework, drainage, sub-base and synthetic surfacing as interconnected parts of the installation.
3. Backing Design Influences Water Flow
The design and distribution of drainage openings in the backing can affect how efficiently water leaves the turf layer.
Relevant characteristics can include:
- Drainage-opening configuration
- Opening density
- Backing structure
- Coating characteristics
- Tuft density
- Overall permeability
However, larger or more numerous openings are not necessarily better in every situation. The backing must also provide sufficient dimensional stability, tuft retention and mechanical durability.
Therefore, the most useful purchasing document is the product-specific permeability test report, rather than a generic statement that the turf has “fast drainage.”
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