Permavoid Podium Deck consists of lightweight, modular cells that can be interlocked to create a load supporting raft across the largest trafficked deck area, while providing integral drainage and water harvesting. Used beneath any surface, it reduces the need for surface drains and channels and for falls in the deck surface, allowing developers to utilise more of the deck area for parking, living roofs or leisure facilities. It also eliminates drainage pipework in levels beneath the deck, again creating the maximum useable space. At the same time, Permavoid Podium Deck forms an efficient first stage source control solution, allowing water to be reused for cleaning, cooling or irrigation on-site. And like all Polypipe WMS products, it can be integrated into a wider SUDS system for controlled attenuation, filtration and soakaway.