Blackdown Intensive Green Roof

Alumasc Intensive Green Roof


Blackdown Intensive green roofs offer the benefits of a small urban park and support a wide range of plants, trees and shrubs. They provide recreational space for people and a rich habitat for wildlife.

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Key Features & Applications

  • Blackdown Intensive green roofs replicate ground based landscaping for recreational use and are generally installed on new build schemes with roof and podium decks.
  • They usually consist of a mixture of hard and soft landscaping with lawns, water features, large shrubs and semi-mature trees all possible. 
  • As well as providing recreational space and a rich habitat for wildlife, intensive green roofs reduce water run-off. 
  • Blackdown green roofs comply with the UK’s GRO Green Roof Code of Best Practice 2011 and the German Landscaping and Landscape Development Research Facility (FLL) Guidelines.

Design, Planting & Waterproofing

  • Blackdown Intensive green roofs have a typical substrate depth that ranges from 200-1500mm and require a permanent irrigation system and regular maintenance.
  • Blackdown Intensive substrate is required; the substrate contains more organic matter than other green roof types, and is designed to support a wider variety of plants and trees.
  • Planting can include lawns, shrubs, edible plants, perennials and grasses, small deciduous trees and conifers. Planting type and size determines required irrigation system and soil depth.
  • Waterproofing options include Hydrotech Hot-Melt Structural Waterproofing, Derbigum High Performance Membranes and Euroroof Mastergold Membranes.

Installation & Maintenance

  • Blackdown green roofs can be installed by the Blackdown in-house Contracts Division or by Alumasc's nationwide network of registered contractors.
  • Blackdown Intensive green roofs are designed to accommodate the imposed loads of a full roof garden and require regular irrigation, personnel access and regular maintenance. The maintenance regime depends on the plant species installed.
  • Warranties are available for the Alumasc waterproofing system used in the green roof build up.

Featured Project

SECC, The HydroSECC, The Hydro

White House Works, Bold Road, Sutton, St Helens, Merseyside, WA9 4JG


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