HG 4620 - Drainage Aggregate
Our Drainage Aggregate is a granular drainage medium specifically designed for use as a filler substrate beneath our multi-layer green roof systems. We provide extensive, semi-intensive, & intensive blends of our Drainage Aggregate.
Drainage Aggregate offers many advantages:
most commonly used as a pressure-resistant fill within drainage boards
an excellent bedding material for pavers as a maintenance path or patio
embedded drainage channels may be used to transfer excess water quickly to roof drains or scuppers