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Permavoid is a multi-functional stormwater management system engineered to create functional and appealing site drainage which treats stormwater as a resource, rather than a waste product.

Modular units with a 95% void ratio and ultra-shallow profile form a monolithic stormwater control structure that reduces the impact of urban development. Our designs and sustainable drainage products cultivate the natural movement of water within the local ecosystem and watershed. The high-strength polypropylene raft is also ideal for subbase, deep conveyance pipe, and water detention replacement. Eliminating traditional conveyance structures reduces the costs associated with deep excavations, backfill materials, and potential subgrade conflicts including bedrock, contaminated ground, buried utilities, and high water tables.

Intrested in learning more?

Check out this Intresting webinar all about creating resilient tree plantings in our cities with Permavoid.  The discussion will highlight innovative technologies that protect root zones, improve soil aeration and increase water availability.  It will also show how trees can be used for large-scale stormwater management to prevent runoff and create more sustainable cities. 

Tree Protection

Full System: Collection, Treatment & Storage.  Protect valuable infrastructure from damaging tree roots while simultaneously promoting tree health and vitality.  Permavoid provides positive air circulation and stormwater infiltration into the root zone of new or developing trees.

Subbase Replacement

Full System: Collection, Treatment & Storage.  Replace up to 18 inches of aggregate subbase and 12 inches of excavation while managing stormwater within Permavoid.


Passive Irrigation

Full System: Collection, Treatment & Storage. Reduce or eliminate irrigation expenses by utilizing stormwater. Control the volume of stored water to maximize the health and vitality of grass or other plant material.



Full System: Collection, Treatment & Storage.  Reduce the size and quantity of bioswales by maximizing the performance of each.  Store water in Permavoid for controlled discharge to maintain ideal water depths.

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    Feel free to contact us via phone or email!

    6400 Grand River Drive
    Ada, Michigan
    49301 USA