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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

Tech Data Sheet

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Tech Data Sheet