Shire Green Roof Substrates Ltd

Shire Intensive Substrate

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Substrate Description

Lightweight substrate made from recycled brick, compost and medium clay soil.

Substrate Application

General purpose green roof growing media for intensive greening

  • Intensive green roofs, including roof gardens, e.g. NBS Q37 Clause 370
  • Simple Intensive green roofs, e.g. NBS Q37 Clause 380
  • Small domestic green roofs
  • Localized areas on biodiversity roofs to change vegetation.
Technical Information (Typical)
Size: Sieve Size (mm) % passing Intensive substrate for green roofs 
Photo Courtesy: TIGA Europe Limited
16 96
4 37
  <0.063 15
pH value: 8.47
Total pore volume: 49 - 60%
Soil Organic Matter (SOM): 9.2%
Maximum water holding capacity: 33.5% vol.
Driest days in Summer
FLL Maximum
water capacity
Design maximum
m3 875 1210 1493
1 sq m @ 100mm 88 121 149
1 sq m @ 25mm 21.9 30.3 37.3
Packaging: Supplied by bulk tipper load, in multi trip 1 m3 big bags and 25kg sacks

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

The manufacture of house bricks generates a significant percentage of bricks that do not meet the rigorous quality standards required for house building, for instance because of cracks or other damage and are scrapped. These cannot easily be reprocessed and they are set aside and crushed for use in other applications, e.g. as lightweight aggregates or for use as green roof growing media.

Green 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.

Intensive green roof substrate used with planted shrubs

Intensive Substrate used with planted shrubs and meadow flowers

"Shire provided me with authoritative advice on soil weights, depths and constituents for both my extensive and intensive roofs. They were able to provide local materials from the south east and they were able to deliver the 20 tonnes of soil on an articulated lorry with its own forklift. Everything from the first enquiry to the final delivery was carried out in a very professional way."

Justin Bere


24 Rosebery Avenue
London EC1R 4SX
United Kingdom