Lightweight Intensive Roof Garden Subsoil


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Purchasing Options

  • 700 & 1200 litre bulk bags
  • Small handy 25litre bags
  • This product is available in Loose Bulk Loads. Click here for a quote

Delivery charges (if applicable) are calculated at the basket stage and are based on your delivery postcode. You can see these charges prior to confirming your order and entering your payment details.


Suitable For:

  • Large Roof Garden & Balcony Planting Applications where a lightweight subsoil is required
  • Podiums

A Lightweight Intensive Roof Garden Subsoil version of our Lightweight Roofing Soil, for use when specified in larger roof planting schemes where a subsoil layer is required.

Our Lightweight Roofing Subsoil is a blend of clean 10mm screened premium sandy subsoil blended with 4-10mm LECA, a Lightweight Expanded Clay Aggregate, which when combined reduces the subsoils bulk density whilst increasing drainage. The end result is a premium lightweight subsoil medium that is very similar in nutrient value and performance to that of a natural subsoils. An essential material for larger Roof Gardens, Balcony Planters and Podiums and all lightweight planting applications where the point loadings need to be significantly reduced.

Product Accreditation

  • All our Lightweight soils are tested by Tim O’Hare Associates, the UK’s leading soil scientist, to their own specification which far exceeds the requirements of the British Standard.

Key Features

  • Scientifically verified
  • Bulk Density (At Field Capacity) 1.7 g/cm3
  • Bulk Density (At Saturation) 1.7 g/cm3
  • Balanced Alkaline pH
  • Fully compliant to industry standards and beyond
  • Screened to 10mm
  • Free draining
  • Peat Free


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