Formavoid is a 100mm deep plastic void former that encourages fill material into an extremely strong series of columns and arches, leaving 60% open void space beneath the arches for source control water management & storage. When filled with aggregates, ranging in particle sizes from 1mm – 40mm, Formavoid combines with the aggregate to create a granular base with enhanced stability and increased water storage capacity.
Characteristics
Vertical strength >120tons/m²
Nest stacking to achieve 88m² product per pallet space
3 units per m²
Aggregate interlock, retention & stability
Modular with integrated interlocking mechanism
Key Features
01
Recycled PP
By incorporating recycled PP into the manufacturing process, we can reduce the demand for fossil-derived virgin polymer, make better use of existing plastic resources and supporting sustainability.
02
Perforations For Water & Airflow
Strategically positioned perforations provide controlled pathways for water and airflow, helping to improve drainage, ventilation and moisture management.
03
Catenary Ribs For Shape Retention
Catenary ribs provide targeted structural reinforcement, helping the component maintain its intended shape while distributing loads efficiently.
04
Integrated Clips
Integrating clips enables a quicker, simpler installation by making components easier to align, secure and assemble, helping to reduce installation time and improve efficiency on site.
05
60% Void Space Beneath Arches
60% void space maximises water storage while enabling efficient flow, helping reduce construction depth and optimise available space.
06
Product Benefits
Reduce construction depth while increasing void ratio and storage volume, helping to lower the overall carbon footprint and construction costs — without the need for underground tanks.
Applications
Permeable Pavements
Source Control SuDS
Water Attenuation, Conveyance & Infiltration
Rainwater Harvesting & Recycling
Sports Turf Drainage
Blue/Green Roofs & Podiums