Inbitex Non-Woven Geotextile Membrane

Inbitex is a specialist thermally bonded non woven geotextile membrane developed for use within permeable paving and sustainable drainage systems, including Formpave Aquaflow installations. Unlike standard separation membranes, Inbitex is designed to actively improve water quality as stormwater passes through the pavement build up.

In use, Inbitex performs conventional separation and filtration by preventing fine aggregate particles from migrating into lower layers, helping to maintain void space and long term drainage performance. In addition to this, the unique fibre structure promotes the growth of naturally occurring micro-organisms within the geotextile layer.

These micro-organisms form a biofilm that breaks down hydrocarbons and organic pollutants carried in surface water runoff. Research has shown that systems using Inbitex are capable of degrading significant quantities of oil per square metre each year, improving the quality of water entering the ground or attenuation system.

Inbitex can be used as either an upper or lower filtration layer depending on system design. As an upper layer, it provides initial filtration and prevents finer aggregates clogging lower layers. As a lower layer, it acts as a secondary filter, removing hydrocarbons and pollutants from downward percolating water before discharge or infiltration.

This membrane is typically specified in commercial car parks, permeable pavements, highways schemes and SuDS installations where water quality control is a design requirement. It is not intended as a general landscaping membrane and should only be used where pollution control is required.

Install Inbitex in accordance with the permeable paving system design. Overlaps should be sufficient to maintain continuity of filtration, and the membrane should remain wrapped until installation to limit UV exposure.

• Specialist geotextile for SuDS and permeable paving systems
• Provides separation and filtration while supporting pollution control
• Encourages microbial breakdown of hydrocarbons in runoff
• Prevents fine aggregate migration and layer clogging
• Suitable for use as upper or lower filtration layer
• Designed for long term performance in drainage systems

Manufactured from a blend of polypropylene and polyethylene fibres using a thermally bonded non woven process. The fibre surface structure supports the formation of microbial biofilm for hydrocarbon degradation.

Product grade: Inbitex
Fabric type: Thermally bonded non woven geotextile
Polymer composition: Polypropylene and polyethylene
Colour: Green
Mass per unit area: 130 gsm
Tensile strength (mean): 8.5 kN per metre
Elongation at peak strength: 28 percent
CBR puncture resistance: 1575 N
Trapezoidal tear resistance: 325 N
Characteristic pore size O90: 0.145 mm
Water flow rate: 80 x 10⁻³ m/s
Water breakthrough head: 50 mm
Air permeability: 2875 litres per m² per second
Roll width: 4.5 m
Roll length: 100 m
Roll coverage: 450 m²