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November 29, 2023

Innovative Stormwater Matting: SEL Environmental's Solution Redefines Construction Efficiency

Innovative Stormwater Matting: SEL Environmental's Solution Redefines Construction Efficiency


SEL Environmental is paving the way for construction efficiency with a stormwater attenuation system. Installed during the construction of a new hospital car park, the 100mm-deep Formavoid system, crafted from 100% recycled plastic, offers a revolutionary approach.

The Formavoid System: A Simple yet Powerful Solution

SEL Environmental's stormwater attenuation system utilises a 100mm-deep plastic mat with strategically placed holes, boasting a remarkable capacity to store 300 cubic meters of water. Unlike traditional methods requiring extensive excavation and installation of large attenuation tanks, the Formavoid system ingeniously leverages the voids in the mat to collect rainwater. This collected water is then released into the surface water drainage system in a controlled manner, effectively preventing flooding.

Environmental Impact: 100% Recycled Plastic

One of the standout features of the Formavoid system is its commitment to sustainability. Crafted entirely from 100% recycled plastic, this stormwater matting not only reduces the need for excavation but also contributes to the circular economy by repurposing plastic waste. The innovative use of recycled materials aligns with the industry's growing emphasis on environmentally conscious construction practices.

Efficiency in Action: Eliminating the Need for Excavation

Traditionally, the installation of stormwater attenuation systems involved extensive excavation, relocation of earth, and the installation of large tanks. SEL Environmental's Formavoid system eliminates this cumbersome process. By utilising the stormwater matting, there's no need to excavate and move hundreds of tonnes of earth and foundation aggregate. This not only saves on costs but also simplifies the construction process, particularly when dealing with existing underground pipes and cables.

Controlled Release for Flood Prevention

The Formavoid system goes beyond efficiency; it introduces a controlled release mechanism for collected rainwater. This not only prevents flooding but also ensures that the surface water drainage system operates seamlessly. The controlled release feature adds an extra layer of reliability to the stormwater management process.

A Sustainable Future for Construction

SEL Environmental's innovative stormwater matting is not just a solution for today; it's a glimpse into a more sustainable future for construction projects. By reimagining stormwater management, this system sets a precedent for reducing environmental impact, streamlining processes, and embracing recycled materials.


SEL Environmental's deployment of the Formavoid system marks a significant stride in redefining stormwater management in construction. Beyond its practical benefits of cost savings and operational efficiency, the use of 100% recycled plastic aligns with the industry's commitment to sustainable practices. This innovative stormwater matting not only addresses current challenges but also sets a standard for environmentally conscious construction methodologies, paving the way for a greener and more efficient future.

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