As a rule of thumb for bark coverage, typically 1m3 (cubic metre) will cover 10m2 (metres squared).
Normally bark is laid at least 10cm thick to suppress the growth of weeds and up to 30cm deep in childrens areas. Generally speaking, the more you put down the longer it will last before it needs to be replaced.
Bark and Soil Calculator

Be mindful some compaction will occur with soil and
compost products. Allow up to 20% for compacting in garden beds etc.
Odd Shaped Area?
Try this:
- Make a rough drawing of your area
- Divide that area into sections. Choose dividing lines that will create something close to rectangles. Close is good enough.
- Use the calculator above to determine the amount required for each section, and then just add them together.
Or use the reference tables below to help work out the quantities required
STEP 1
Simply measure the width and length of the area you need to cover eg. 8m x 2m
STEP 2
Then, work out how deep you need the product.
CENTIMETRES
| 1cm |
.010 |
|
10cm |
.100 |
| 2cm |
.020 |
|
15cm |
.150 |
| 3cm |
.030 |
|
20cm |
.200 |
| 4cm |
.040 |
|
25cm |
.250 |
| 5cm |
.050 |
|
30cm |
.300 |
| 6cm |
.060 |
|
50cm |
.500 |
INCHES
| 1" Inch thick |
.025mm |
|
7" Inch thick |
.175mm |
| 2" Inch thick |
.050mm |
|
8" Inch thick |
.200mm |
| 3" Inch thick |
.075mm |
|
9" Inch thick |
.225mm |
| 4" Inch thick |
.100mm |
|
10" Inch thick |
.250mm |
| 5" Inch thick |
.125mm |
|
11" Inch thick |
.275mm |
| 6" Inch thick |
.150mm |
|
12" Inch thick |
.300mm |
STEP 3
CALCULATE!
EXAMPLE:
8m x 5m @ 2" thick
8 x 5 x .050 = 2m³ Needed
EXAMPLE:
20m x 6m @ 6" thick
20 x 6 x .150 = 18m³ Needed
Please feel free to call us on 03 547 5300 or 0800 421 000 for any assistance of working out volume needed.