Granular lightweight aggregate that creates a sustainable root environment by retaining and draining water in a natural way. Depending on project specific requirements, additional drainage elements or drainage layers can be used to increase horizontal flow rate. It can also be used as a bedding material for pavers or patios within a green roof area.

rooflite drain is a product line that is available in different saturated weight classes. These weight classes are designed to guide you in choosing the best option for your project based on your weight requirements. Each weight class is identified by a number that corresponds to the typical weight for fully saturated media based on ASTM E2399. Depending on your specific region, the following weight classes are available for rooflite drain:

  • drain 400: saturated weight 40-50 lbs/ft3
  • drain 500: saturated weight 50-60 lbs/ft3


rooflite® drain properties

  • A granular drainage layer that can be easily adjusted for any area or depth for extensive, semi-intensive or intensive green roofs in multi-course systems
  • Promotes healthy plant growth by retaining & draining water in a natural way
  • Provides a more natural root space with better water & air distribution than synthetic options
  • Can also be used as a bedding material for pavers, ensuring drainage while contributing to storm water retention