Green Roof Systems

Green Roof Systems

Green roof systems are becoming increasingly popular for commercial, governmental and private residential buildings for a number of reasons:


– In urban areas they help purify the air by converting carbon dioxide into oxygen and by trapping pollutants.

Building performance

– A green roof system helps insulate a building during
both heating and cooling season, which for large buildings can mean considerable savings.


-In the current international climate, it is good practice to actively promote a green image.

Green Roof Systems

Lava Rock is a natural, lightweight volcanic aggregate with a porous structure and rounded particle shape. Pumice is extensively used in horticulture as a growing medium as it improves soil aeration, retains moisture and promotes root growth. As demand for green roof installations increases so does the use of pumice as a substrate in both the intensive and extensive systems. Reasons for this include:

  • Improved soil aeration
  • Moisture retention
  • Long lifespan
  • Thermal properties help insulate a building helping conserve energy
  • Improves and controls drainage to avoid run off
  • Promotes root growth
  • Environmentally friendly
  • Air quality improvement
  • Noise reduction – acts as a sound barrier from industrial units below
    Habitat for wildlife

Our Lava Rock grades 0-4mm and 4-16mm are recommended for use in this application.

For further information please do not hesitate to contact us.