There are a few things to consider when calculating the amount of topsoil needed for your project, mainly the depth of topsoil required.
As a guide:
If you are applying a layer of topsoil under turf we'd recommend at a depth of 10cm.
If you are looking to fill an entire trench for planting a new hedge then we recommend measuring the depth of the trench - excluding very small and very large plants a spades depth / 30cm is usually ample when planting a new hedge.
One 35L bag = approx. 28kg of topsoil
One 750kg bulk bag of topsoil = approx. 27 x 35 litre bags
1 Bag 750kg
Planting Type | Quantity |
---|---|
Turf sqm (laying soil 10cm deep) | 5.5sqm |
Hedges length in metres (1m wide at 10cm depth) | 7.5m |
Trees (number) | 15 trees |
To calculate the amount of topsoil you need:
- Measure the length and width of the area of topsoil in metres and multiply together.
- Assess the depth of topsoil required in cm and multiply the above calculation by this figure - The depth required will be dependent on the previous use of the area, for example if the area was a patio you will require new topsoil at about 15cm depth, whereas if it was a lawn 5cm would be adequate.
- Divide your answer by 100 and you will receive the amount of topsoil needed in cubic metres (our 750kg bags are 3/4's of a cubic metre)