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Calculate volume using Recommended Depths

Our lawn measurement guidance can be also followed to work out the area that needs to be covered with topsoil, bark, soil improver or topdressing. Then simply multiply the area by the depth of product required to calculate the volume you require. Our Product Calculator will work this out for you.

Be careful when buying topsoil by the tonne. A tonne of ordinary topsoil contains just 0.67 of a cubic metre. A bulk bag of Rolawn Blended Loam Topsoil, Vegetable & Fruit Topsoil and Beds & Borders Topsoil measures approximately one cubic metre when packed, up to 50% more product than a tonne of ordinary topsoil.

Recommended depths


 

  Usage

Depth

Topsoil

  Laying turf or seeding

150mm 

Bark

Mulching

50-75mm

Play Grade Bark

Mulching
Play Areas

50-75mm
300mm

Soil Improver

  Improving heavy claysoil

75mm

Soil Improver

  Improving light sandy soil

30mm

Lawn Topdressing

  Topdressing in spring & autumn

3mm

Lawn Topdressing

  Topdressing in summer

1.5mm