Summary
A traditional static compost bin aimed at low-cost, low-intervention use. The trade-off is limited protection from moisture and temperature variability.
At a glance
| Brand name/manufacturer: | Blackwall 330L Compost Converter |
| Bin type: | Dalex, cone |
| Stated capacity: | 330 litres |
| Core materials: | Plastic |
| Access: | Top lid |
| Warranty: | Not stated |
Scorecard summary
| Balanced scorecard: | 7.0 / 10 |
| Value for money rating: | Excellent |
| Best use: | Garden waste |
| View Product: | Visit website |
Scorecard results
We were surprised by the high performance score and the ‘excellent’ value for money rating.
To guide you accurately, we need to dig deeper! The essential thing is to recognise this is an ambient compost bin, scored compared to other ambient bins. It will take 12-18 months to break down garden waste, longer for woody materials. It is not suitable for most kitchen scraps. If you expect fast compost and/or food waste to be composted without pests and flies, you are likely to be disappointed. Watch out for confusion between “capacity” and “throughput”. A well operated 100-litre hot composting system will process more waste per year than a large 330-litre ambient bin. It is unlikely to come down to whether this is a good bin – and more likely to be – is this the right system for your situation. see our 5 core use cases.
What this bin does well
- Simple, lightweight construction.
- Easy to site and relocate.
- Suitable for garden trimmings.
Where this bin is limited
- Minimal insulation or moisture control.
- Food waste may increase odour risk.
- Limited structural buffering.
Fit guide
Best for: garden-only composting. Consider if: budget and simplicity matter most. Not ideal if: composting large food volumes.
Build and longevity notes
Plastic panels are lightweight; black ones have a long life expectancy.
Practical ownership notes
No assembly. Unloading via a small hatch can be challenging. Often, the cone (with uncomposted waste) is toppled and moved to the side to leave the base compost ready to fork away.
What we couldn’t verify
- Warranty details
- UV resistance
Summary
A straightforward garden-waste composter with few features but minimal complexity.

