You need to top up the infill every one or two years. The top-up frequency depends on how heavily you use your artificial turf.
Deep decompaction
When routine drag brushing and deep cleaning no longer manage to loosen the compacted infill, you need to perform a deep decompaction. You need special tools to penetrate the performance infill layer, loosen it, and increase porosity.
After decompaction, the infill becomes lighter and offers better support for the fibers. It also becomes easier to walk or play on.
How often do you need to perform deep decompaction?
You would have to perform deep decompaction once every 3 to 4 years when the infill stops responding to regular deep cleaning and drag brushing maintenance.