BEAUTIFUL LAWNS. FOR A BRIGHTER TOMORROW.Choosing between 30mm and 40mm artificial grass is less about finding one universally “better” option and more about matching the pile height to the look, feel and level of maintenance you want.
Both sit in popular ranges for domestic gardens. A 30mm grass tends to give a neat, balanced lawn appearance, while a 40mm grass generally creates a deeper, plusher finish. Fibre density, blade shape, colour and backing also matter, so pile height should never be the only specification you compare.
In this guide
What is pile height?
Pile height is the approximate length of the artificial grass fibres from the backing to the tip. It affects the visual depth of the lawn and how soft or upright it feels. If you want a broader overview, read our artificial grass pile-height guide.
What does 30mm artificial grass look and feel like?
Grass around 30mm can provide a natural-looking lawn without an especially deep pile. It is often chosen where customers want a tidy finish that is still soft enough for everyday garden use.
A medium pile can also be relatively straightforward to brush and maintain because the fibres have less height to support. The final appearance still depends heavily on density, colour variation and fibre construction.
Explore our 26mm–35mm artificial grass to compare current options.
What does 40mm artificial grass look and feel like?
Grass around 40mm generally creates a fuller, more cushioned appearance. Longer fibres can give the lawn a more luxurious look, particularly when the pile is dense and combines several natural green and brown tones.
Longer pile can need more regular brushing in frequently used areas to help the fibres remain upright. Check the specification and care guidance for the individual product rather than assuming every 40mm grass performs the same way.
Browse our 36mm–40mm artificial grass for current choices.
30mm vs 40mm for a family garden
For a general family lawn, both can work. A 30mm product may appeal if you prefer a slightly neater finish and easier routine brushing. A 40mm product may suit you if appearance and a deeper feel are higher priorities.
Look at how the garden will be used. Dining furniture, children playing, regular foot traffic and pets can all affect the pile over time. Density and fibre resilience are therefore just as important as the headline millimetre figure.
Which is better for dogs?
Pile height alone does not determine whether grass is suitable for dogs. Drainage, backing, ease of cleaning and how frequently the area is used matter too. Compare our pet-friendly artificial grass and read our artificial grass for dogs guide.
Which looks most natural?
Natural appearance comes from a combination of fibre colours, shapes, density, thatch and pile direction. A high-quality 30mm grass can look more convincing than a basic 40mm product, and vice versa. Viewing samples in your own daylight is one of the best ways to compare.
Should I order samples?
Yes. Photographs cannot fully show fibre softness, colour or density. Order from our artificial grass samples collection and compare your preferred 30mm and 40mm products side by side.
30mm or 40mm: the quick answer
Choose around 30mm if you want a balanced, neat lawn with a medium pile. Choose around 40mm if you prefer a fuller and more cushioned appearance. Then compare the individual product specifications, not just the pile height.
Ready to compare the wider range? Browse all artificial grass from Status Grass.