In high traffic areas or narrow regular walkways (for example a pathway to a shed) flattening of the grass may occur. Similar to when you buy an expensive plush carpet for your home, with a longer pile height, tread marks are more visible. You can expect the same from a longer plush artificial lawn.
More regular brushing may be required, or you may choose to have steppers in high traffic areas.
Shorter artificial lawns will show less imprints from regular traffic. However, many prefer the more natural look and ‘imperfection’ of a longer pile height lawn.
Flattened areas of lawn may look different in colour and finish as flattened fibres show colour and reflect sunlight differently to upright fibres.