Woven Membrane For Separation, Stabilisation & Erosion Control
The Black G90 Woven Geotextile Membrane 78gsm - also known as Fastrack SG or 609—is our most commonly supplied woven geotextile. Designed for separation, stabilisation and filtration, it’s widely used across equestrian, civil engineering and general groundworks.
Applications and Benefits
G90 is engineered to prevent intermixing of materials and provide a stable platform over soft or variable ground. Its woven structure offers high tensile strength with controlled permeability, making it ideal for:
- Horse arenas, paddocks and gallops
- Road construction and access tracks
- Car parks and hard standings
- Erosion control and coastal defences
- Artificial sports pitches
- Weed suppression beneath gravel or paving
Key advantages:
- Maintains separation between subgrade and aggregate
- Increases load-bearing capacity and reduces rutting
- Controls weed growth in landscaping applications
- Suitable for use with EcoGrid and other permeable systems
- Lightweight and easy to install
Features
- Woven polypropylene construction
- Suitable for all soil types
- Resistant to chemicals, rot, and biological attack
- Roll sizes to suit large-scale coverage
- Ideal for use in geotextile and ground reinforcement packages
Technical Specifications
Mechanical Properties
- Tensile Strength (MD): 20.0 kN/m
- Tensile Strength (XD): 11.0 kN/m
- Elongation at Break (MD): 15%
- Elongation at Break (XD): 16%
- CBR Puncture Resistance: 1800 N
- Dynamic Cone Drop: 18 mm
Hydraulic Properties
- Permeability (EN ISO 11058): 23 l/m².s
- Hydraulic Velocity: 0.026 m/s
- Characteristic Opening Size: 260 µm
Physical Properties
- Thickness Under 2kPa: 0.47 mm
- Weight: 78 g/m²
- Roll Width: 2.25 m
- Roll Length: 100 m
- Roll Diameter: Approx. 24 cm
Frequently Asked Questions
What is G90 membrane used for?
G90 is used to separate layers of soil and aggregate, improve ground stability, and control erosion. Common in equestrian, civil, and landscaping work.
Can this be used under a gravel driveway?
Yes, G90 is ideal beneath gravel to prevent weed growth and stop the sub-base and gravel from mixing over time.
Is it suitable for horse arenas or paddocks?
Absolutely. It’s a core part of our horse arena packages and provides a stable, long-lasting base layer.
Do I need to overlap rolls during installation?
Yes, overlap by at least 300 mm for standard applications, and up to 500 mm on soft or uneven ground.
Is the membrane permeable?
Yes, G90 allows water to pass through while still maintaining separation between layers.
