Our Compost Twinstak consists of 2 x 500 litre bulk bags, providing enough compost for approximately 20 square metres when applied at a depth of 50mm.

For a smaller amount of compost take a look at our Compost Single Bulk Bag.

What is Twinstak? The revolutionary technology from Topsoil.co.uk that enables us to offer two bags of our products on one pallet. It saves you money on delivery costs and reduces our impact on the environment.

Topsoil.co.uk’s technical design team has used bespoke engineering to develop and build unique and proprietary technology, with patents filed on it. This allows us to make a significant reduction on our delivery costs – savings which we happily to pass on to you, our customers. In addition, the technology helps is to reduce our carbon footprint.

What’s more, our double blending system produces an exceptionally high quality blend and mix of our screened raw materials/ingredients, meaning better quality results in your gardening and landscaping schemes!

Spend more time enjoying your garden, safe in the knowledge that your Twinstak compost will be quickly and efficiently delivered directly to you.

• 2 bulk bags of general-purpose dark brown compost
• Peat free
• All natural ingredients
• Good for soil fertility
• Sandy and chalky soils – improves moisture and nutrient retention
• Clay soils – helps loosen the structure for better drainage and friability
• Lightweight with a texture that’s easy to work with
• Produced in accordance with BSI PAS100:2018
• Not recommended as seed sowing compost

Typical coverage: Each individual Bulk Bag = approx. 10m2 at a depth of 50mm. Twinstak combination therefore gives approx. 20m2 at a depth of 50mm.

Each individual Bulk Bag: approximately 500 litres when packed. Our Twinstak Compost + Compost combination therefore gives you 1000 litres.

Topsoil.co.uk uses bags measured at 600 litres with a product bag fill of 500 litres and certified to carry 1000kg, this is to facilitate the Twinstak system. Bag fill is verified as correct by using a certified system in accordance with BS EN12580:2013 to ensure all products are 500 litres when packed.