Boughton IN 1


Boughton IN 1 is a substrate that has greater organic content to allow it to support larger plants and also to be installed at deeper depths.

Its sandy texture means that it can be installed at depths from 100-500mm if sufficient weight bearing capacity is available. This substrate is designed for intensive green roofs, where planting schemes are much more detailed and formalised. This means that a wide range of plants can be supported in IN1, dependent on the depth at which it has been installed.

Depending on the substrate depth and plant type, permanent irrigation systems (above or below ground) are sometimes installed. these are usually to act as a backup for extended dry periods and are not required for everyday irrigation as the substrate has the ability to hold onto sufficient moisture during ambient conditions.

Product Properties

  • Bulk density oven dried (g cm-3) 1.07
  • Bulk density at 10% VMC (g cm-3) 1.33
  • Bulk density at field capacity (g cm-3) 1.46
  • Field Capacity (% v/v) 53.9
  • Particle Density (g cm-3) 2.18
  • Total Porosity (%) 48.9
  • Porosity at Field Capacity (%) 57.5
  • Effective Porosity (%) 0.0
  • Saturated Hydraulic Conductivity
  • (mm min-1) 18

To download or print our full product specification,

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NBS Product Specification

Applications & Installation

Designed for intensive green roof installations, this substrate provides a stable growing medium for a wide variety of plants, including green roof lawns, shrubs and trees.

Boughton IN1 Green Roof Substrate meets and exceeds all present GRO guidelines. The substrate can be laid to depths varying from 10 / 500 cm. The depth of substrate is determined by the planting scheme and the weight loading capability of the roof which must be assessed by a qualified structural engineer. Our substrates can be delivered in any required format. This includes 25ltr and IBC Bulk bags. Or loose tipped as required


To specify this product (copy & paste)

Product Name: Boughton IN 1

Manufacturer: Boughton Loam Ltd

Address: Boughton Loam Ltd, Telford Way, Telford Way Industrial Estate, NN16 8UN

Telephone: 01536 510515



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