Envirofill Artificial Grass Infill Calculator

As a working estimate, standard-pile artificial grass (20-30mm) needs around 7.5 kg of Envirofill per square metre, based on the UK supplier coverage figure of one 22.5kg bag per 3m². Shorter pile needs less (around 6 kg/m²) and longer pile needs more (9-11.5 kg/m²), because taller grass fibres need more infill support to stand upright and stay protected.

Divide your total estimated kg (area × coverage rate × waste allowance) by 22.5kg, the standard UK retail bag size, and round up to the next whole bag. For example, 165kg needed means 8 bags, since 7 bags (157.5kg) would leave you short.

Yes. Infill supports the turf fibres and helps them stand upright, and taller pile has more fibre to support, so it needs a deeper (and therefore heavier) layer of infill per square metre than short pile turf.

It is the kg of Envirofill per square metre that this calculator applied to your area for your chosen pile-height band. It is shown so you can see the assumption behind the headline number, rather than treating the result as an exact, unquestionable figure.

Infill coverage genuinely varies by exact pile height, brush density, and how evenly it is spread, so a single "true" number does not exist. The range shows a realistic low-to-high estimate; the midpoint is a sensible ordering target for most lawns.

Always round up. Running short of infill mid-installation means a delayed top-up order and a lawn that is not properly brushed in, which can leave fibres exposed and prone to matting or premature wear.

10% is a reasonable default for most DIY installs, covering spillage during spreading and loss while brushing the infill down into the pile. Larger or more exposed areas, or first-time installers, may prefer 15% for extra safety margin.

Envirofill is designed to be compatible with most artificial grass products, but always check your turf manufacturer's guidance, particularly for very short or very long pile products, or turf with a dense thatch layer that may need a different infill depth.

No, this tool estimates quantity only. Envirofill's antimicrobial and odour-control properties come from its Microban-treated coating, not from the amount used, so following the recommended coverage rate (rather than over- or under-filling) is what keeps the product performing as intended.

Many UK suppliers sell Envirofill in single 22.5kg bags with no strict minimum, but very small orders (under one bag) may still need to be rounded up to a full bag, since suppliers do not split bags.

For large areas (roughly 500m² or more), it is worth asking suppliers about bulk or pallet pricing and delivery, since ordering dozens of individual retail bags is rarely the cheapest or most practical option.

No. The cost estimate is bags × your entered bag price only; delivery, installation tools, and the artificial grass itself are not included.

The bag-size assumption (22.5kg) and coverage rate are specific to Envirofill as sold by UK suppliers. Other infill products such as silica sand, rubber crumb or walnut shell have different densities and bag sizes, so their coverage rates will differ, check the specific product's data sheet instead.

The calculator will still produce a result, but with no safety margin for spillage or brushing-in loss. Most installers find a small allowance (5-10%) avoids an awkward top-up order for a small shortfall.

Check your turf's product listing or data sheet for pile height in mm; if genuinely unsure, the "Standard (20-30mm)" band covers most common residential artificial grass and is a reasonable default starting point.