Infill is the granular material that installers spread between the blades of artificial grass once the turf is rolled out and secured. It fills the space between the fibers, mimicking the texture and weight of soil beneath natural grass. Without it, the blades flatten quickly, the mat shifts, and the surface loses both stability and cushioning. In short, turf infill helps synthetic grass maintain a more natural appearance, better stability, and improved underfoot comfort.
Types of Infill: Silica Sand, Rubber, and More
Traditional synthetic turf infills include silica sand, crumb rubber, EPDM, and TPE (thermoplastic elastomer). Alternative and organic options have also become common, such as cork, coconut fibers, and walnut shells. Each material strikes a different balance of weight, softness, and drainage behavior:
- Silica sand is dense and affordable, making it the standard choice for weighing down the turf and keeping it stable.
- Rubber granules and other artificial turf pellets add bounce and shock absorption, which is why you’ll often find them on sports surfaces and play areas. When selecting rubber-based materials, environmental considerations should also be taken into account.
- Cork, coconut, and walnut-based infills appeal to homeowners looking for natural materials with cooling or cushioning properties.
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