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A 2m roll is artificial grass sold as one long strip, 2 metres wide.
A 4m roll is the same grass in a strip 4 metres wide, so each strip covers twice as much ground.
If one strip is not wide enough for your lawn, you lay strips side by side and glue them together — the line where two strips meet is called a join (or seam).
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The trade-off in one line
A 4m roll covers more ground in one strip, so you end up with fewer joins. Fewer joins means a neater lawn and a quicker job. A 2m roll is lighter to carry, and on a narrow or small garden it often wastes less grass. The catch: you may need an extra strip, and that means an extra join.
When 4m wins
- Your lawn is roughly 4m wide, or divides neatly by 4m. You waste very little, and the lawn can look like one single piece of grass.
- You want the neatest finish, with as few joins to glue as possible.
- You have help. A 4m roll is heavy and awkward for one person to move.
When 2m (or 1m) wins
- Narrow spots — paths, balconies or small gardens — where a wide roll would leave a lot of waste.
- You are working alone. Narrower rolls are much easier to carry and line up.
- Access is tight. A rolled-up 4m width simply will not fit through some side gates or up stairs.
Don't forget 1.5m and 3m
These sizes are easy to miss, but they can be the best pick. Say your garden is exactly 3m wide. A 3m roll fits it with zero waste and no joins at all — neither a 2m nor a 4m roll can do that. That is why it pays to compare every width, rather than picking 2m or 4m out of habit.
A quick example
Take a lawn that is 6m × 5m. A 1m roll wastes nothing, but needs 4 joins. A 4m roll has just 1 join, but leaves ~18 m² spare. A 3m roll lands neatly in between: 1 join and only ~6 m² spare. There is rarely one "right" answer — it depends on whether you care more about cost or a tidy finish.
Compare widths for your garden →See cost, waste and joins for 1m, 2m, 3m and 4m side by side. grass calculatorGet my answer — free →
Are joins noticeable?
Done well, joins are hard to spot. That means laying every strip with the pile (the grass blades) leaning the same way, sticking the strips down with joining tape and glue, and brushing sand into the finished surface. Done badly, joins show. That is why fewer joins is often worth buying a little extra grass.
What widths are actually sold in the UK?
2m and 4m are the most common. 1m, 1.5m and 3m are widely sold too. 5m is rare.
Can I mix widths?
You can, and it helps with awkward shapes. But it is usually simplest to stick to one width and run all the strips the same way.
Rather not do it yourself?
Not sure a 4m roll will fit through your gate? A fitter can size it up in minutes. Post the job for free and local landscapers reply with quotes, so you can compare real prices against our estimate.
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