Icopal ST Intensive Green Roof System

Icopal ST Intensive Green Roof System

An intensive green roof system designed for ground cover, shrubs and trees. The depth of topsoil can be varied to accommodate the specific planting to be installed. The system composes of a specially formulated free-draining topsoil above a drainage board.

ST-Intensive-Green-Roof-System1. Intensive Planting Scheme

2. Icopal Lightweight Top Soil

3. Icopal Filter Fleece
    (pre-bonded to drainage board)

4. Icopal Drainage Board 20 FF

5. Icopal Protection Fleece

6. Icopal Waterproofing System


System Properties
The following data relates to the intensive green roof element only.
System Dry Weight: 200 - 1100 kg/m²  
System Saturated Weight: 300 - 1500 kg/m²
System Typical Depth: 250 - 1200 mm
Growing Substrate Depth: 200 - 1000mm (settled)
Contouring: to requirements

Key Features

  • Suited to structures with greater load-bearing capacity.
  • Substrate depth varies to accommodate planting type.
  • Low range of bio-diversity.
  • Low provision of pollen to attract insects.
  • Suited to flat roofs.
  • Higher levels of maintenance required - in terms of irrigation, weeding
    and feeding.
  • Used on podium decks as part of an Intensive roof garden system to
    provide a recreational space or visual space.
  • Plant Species

    The intensive system creates a roof garden build- up where a variety of planting can be installed dependent upon design. The vegetation can be low growing ground cover, shrubs, bushes or even trees. The depth of the topsoil required for the final system will be dependent on the requirements of the planting.


  • Design Notes & Considerations

    General Notes

    The Icopal ST intensive green roof system is suitable for both new build and refurbishment projects. Generally installed on flat roofs to a fall. Suited to structures with greater load-bearing capacity.


    A border with a recommended width of 300 – 500 mm of washed river stones (20 – 40 mm diameter) should be used around all roof penetrations, outlets, perimeters and system edges to provide a vegetation free zone.


    Initial: Irrigation is required immediately after installation, until the plants are fully established. During the establishment period irrigation should be frequent to keep the substrate moist.

    Once established: It is highly recommended that a suitable permanent irrigation system is installed to ensure the planting survives periods of hot dry weather.

    Water Source: A roof top source with a pressure of 2.5 – 3 bar and a flow rate of 60 L/min is recommended to connect a temporary system if required.


    As with terrestrial gardens, the planting will need regular weeding and feeding during the growing season.

    Weeds should be removed periodically through the year to reduce the likelihood that they become dominant. It is recommended that a suitable fertiliser is applied to keep the plants healthy. This may be a spring feed of slow/controlled release fertiliser to last the growing season, or more regular granular/liquid feeds throughout the growing season

  • System Downloads - Datasheets & Product Information Sheets

    On this page you can download our information and documentation in one place. Click on any of the acrobat icons below and the brochure will start to download.



    download pdf Icopal Green Roof Systems - Waterproofing & Living Roof Solutions


    System Design Sheets

    download pdf Icopal ST Intensive System (ICO3022)


    Product Information Sheets

    download pdf Icopal Lawn Turf (ICO2978)
    download pdf Icopal Drainage Board 20 FF (ICO2980)
    download pdf Icopal Lightweight Top Soil (ICO2984)
    download pdf Icopal Protection Fleece (ICO2986)
    download pdf Roofgard Terrace Grate (ICO3025)
    download pdf Icopal Filter Fleece (ICO3029)
  • Technical Support & Bespoke Green Roof Systems

    In the sections of our website above you can find details on many of our standard green roof systems that we offer as a simple solution to the needs of our clients most common requests.

    There are also many other alternative green roof systems that we can offer as a bespoke package to meet your projects specific needs.

    How We Can Help You

    Find Local SupportIcopal has a dedicated field service, with a network of technical advisers throughout the UK & Ireland, available to provide a bespoke insured green roof specification to meet your exact project requirements. Our advisory service for specifiers and contractors is free of charge. Our technical advisers are available at any time during working hours to answer queries on any aspect of green roofing design. 

    Services Include:

    Site Inspection - Experienced Icopal Area Technical Managers can provide a comprehensive site inspection and condition report prior to making any recommendations for product use or installation. Site inspections can include a detailed commentary and photographic record, core sampling, fixing pull-out tests and thermographic imaging analysis where appropriate

    Design Assistance - Icopal provides a range of design services to support project delivery, including all required calculations:

    • Specification - Bespoke system specifications can be generated for each project, based upon specific design criteria. Specifications can be provided in a variety of formats to suit customer requirements.
    • Drawings - Project specific detail drawings can be prepared showing critical interface detailing and airtight system terminations.

    Approved Contractors -
    Installation of the Icopal Green Roof System is carried out exclusively by a network of trained and approved contractors who can demonstrate excellence in all aspects of roofing and landscaping. Using an Icopal Approved Contractor ensures quality right from the start giving you access to a wealth of experience and technical skill protecting your investment with unrivalled guarantees.

    Click here to find your local Icopal Technical Adviser


    Alternatively our head office technical support team can be contacted on:

    0161 865 4444

     or click here to send a bespoke green roof form to our technical support team and we will contact you shortly.

Contact Icopal 0161 8654444

Find Local Support

To discuss your project in more detail please contact
Your Local Area Manager


Technical Support


0330 123 4585

Email: technical.uk@bmigroup.com


Sales Enquiries & Orders


0843 224 7400


0843 224 7401

Email: sales.admin@bmigroup.com

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