Terram T1000 Non-Woven Geotextile Membrane

Terram T1000 is a high performance non woven geotextile membrane manufactured from UV stabilised, high tenacity, virgin polypropylene fibres. Unlike gsm rated membranes, Terram geotextiles are engineered to meet defined mechanical and hydraulic performance targets, with fibre content adjusted to deliver consistent strength and durability.

The membrane is mechanically needle punched and thermally bonded, creating a tough, abrasion resistant fabric with excellent resistance to installation damage. Its randomly orientated fibre structure provides fully isotropic strength, meaning performance is consistent in all directions rather than being limited to a single axis.

In the ground, Terram T1000 acts as a separation layer between soil and aggregate while maintaining high permeability. This prevents fine particles migrating into the sub base, helping preserve drainage performance and reduce long term settlement. The controlled pore size supports effective filtration without restricting water flow.

Terram T1000 is commonly used beneath paths, patios, landscaped areas and light duty hardstanding. It is also widely specified as a filtration layer around drainage aggregates in French drains and granular drainage blankets. Where ground conditions are firm and loading is moderate, T1000 provides reliable long term performance without unnecessary over specification.

For vehicle trafficked areas, weak or clay sub grades or higher installation stresses, a higher Terram grade such as T1500 or T2000 should be selected.

Install Terram T1000 on a smooth, prepared sub grade free from sharp protrusions. Overlap adjacent sheets by at least 300mm, increasing where ground conditions are uneven. Cover promptly with aggregate to avoid UV exposure and installation damage.

• Performance specified non woven geotextile membrane
• Fully isotropic strength for consistent performance in all directions
• High permeability with controlled pore size for effective filtration
• Resists abrasion and installation damage
• Suitable for separation and filtration in light duty groundworks
• Supplied in full rolls for efficient coverage

Manufactured from UV stabilised, high tenacity virgin polypropylene fibres. The membrane is mechanically needle punched and thermally bonded to achieve high strength and abrasion resistance.

Product grade: Terram T1000
Fabric type: Non woven, needle punched and thermally bonded
Polymer: Polypropylene
Colour: White
Tensile strength: 8.0 kN per metre
Tensile elongation: 60 percent
CBR puncture resistance: 1500 N
Cone drop: 38 mm
Water permeability: 90 litres per m² per second
Mean pore size: 75 microns
Thickness at 2kPa: 1.1 mm
Roll width: 4.5 m
Roll length: 100 m
Roll coverage: 450 m²