Shire Green Roof Substrates Ltd

Shire Ultralite Biodiversity Substrate

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Substrate Description

Low nutrient lightweight green roof substrate

Substrate Application

General purpose green roof growing media for biodiversity and brown roofs

  • Suitable for extensive biodiverse roofs attracting pollinators
  • Ideal for maximizing species count of plants and invertebrates
Technical Information (Typical)
Size: Sieve Size (mm) % passing Biodiversity substrate for green roofs 
Photo Courtesy: Frost Landscapes Limited
13 95
5 53
pH value: 8.5
Total pore volume: 52-60%
Soil Organic Matter [SOM]: 2%
Maximum Water Holding Capacity: 47% vol.
Driest days of Summer
FLL Maximum
water capacity
Design maximum
m3 810 1280 1410
1 sq m @ 100mm 81 128 141
1 sq m @ 25mm 20.3 32 35.3
Packaging: Supplied by bulk tipper load, in multitrip 1 m3 Big bags or 25kg sacks (40 per m3)

The above information is issued in good faith and without warranty and is intended as a guide only. The information comprises typical data and does not constitute a specification. Specification values are available separately upon request.

The Manufacturing Process

This substrate is a manufactured by combining a BS3882:2015 compliant loam topsoil made with PAS100 green waste compost blended with specially graded sustainable aggregates. In the case of this substrate it is lightweight expanded clay aggregate mixed with greensand aggregate and specially crushed aircrete sourced directly from the supplier of autoclaved blocks. Damaged or cracked blocks that cannot be supplied to house builders are set aside and crushed to our specification for use in green roof growing media.

BSI PAS 100 Green Waste Compost

Where the growing media incorporates compost it is derived from a sustainable source, normally green waste compost to PAS 100, derived from horticultural wastes collected during municipal works, e.g. hedge trimming, etc.

Biodiversity Substrate with green compost from pine bark.

The Whittington Park changing rooms, Whittington Park, London N19