GP90 Woven Geotextile Separation Membrane

TCS GP90 is a woven slit film polypropylene geotextile designed primarily for separation within ground construction. Its role is to prevent the intermixing of sub grade soils with aggregate layers, helping maintain sub base thickness, strength and long term performance.

When installed beneath driveways, paths, patios or hard standing areas, GP90 forms a stable separation layer that reduces rutting and aggregate loss into the soil below. This improves load distribution and helps preserve drainage characteristics within the build up. The woven structure allows water to pass through while limiting soil movement, making it suitable for free draining ground conditions.

GP90 is commonly used in domestic landscaping, equestrian surfaces, light access roads and general civil engineering applications where separation is required rather than fine filtration. It is not intended to act as a filtration membrane on clay or silty soils. In those conditions, a non woven geotextile is usually more appropriate.

Manufactured from inert polypropylene tapes, GP90 is resistant to naturally occurring soil acids, alkalis, bacteria and fungi. It offers reliable durability when buried in typical ground conditions. The membrane is easy to handle on site and can be cut cleanly using standard tools.

Installation involves laying the membrane directly onto prepared sub grade, overlapping joints by 300 to 500mm depending on ground conditions, and covering immediately with aggregate to prevent displacement.

• Standard grade woven geotextile for separation
• Prevents soil and aggregate intermixing
• Helps maintain sub base strength and drainage
• Suitable for domestic and light civil works
• Resistant to chemical and biological degradation
• Available in multiple roll and cut sizes

GP90 is manufactured from woven slit film polypropylene. This construction provides good tensile strength and durability while remaining inert and stable in buried ground conditions.

Polymer type: Polypropylene
Fabric construction: Woven slit film
Tensile strength MD: 16kN/m
Tensile strength CD: 11kN/m
Elongation at break MD: 20%
Elongation at break CD: 19%
CBR puncture resistance: 1500N
Dynamic cone drop: 18mm
Characteristic opening size: 250 microns
Permeability normal to plane: 15 l/m²/s
Available sizes: 1m x 14m (14m²), 4.5m x 10m (45m²), 2.25m x 25m (56.25m²), 2.25m x 50m (112.5m²) and 4.5m x 100m (450m²)