Terram T1500 Non-Woven Geotextile Membrane

Terram T1500 is a high performance non woven geotextile membrane manufactured from UV stabilised, high tenacity, virgin polypropylene fibres. As part of the Terram standard range, it is engineered to meet defined mechanical and hydraulic performance properties rather than being specified purely by weight.

The membrane is mechanically needle punched and thermally bonded, producing a tough, abrasion resistant fabric with high resistance to installation damage. Its randomly orientated fibre structure provides fully isotropic strength, ensuring consistent performance in all directions and reducing the risk of tearing or localised failure during construction.

In the ground, Terram T1500 provides effective separation between soil and aggregate while maintaining controlled permeability. This prevents fines migrating into the sub base, helping retain bearing capacity and drainage performance over time. The low pore size supports reliable filtration without restricting water flow.

Terram T1500 is commonly specified where lighter membranes are at risk of damage or long term performance issues. Typical applications include domestic driveways, access roads, car parks, hardstanding and construction over soft or clay sub grades. It is also used as a filtration layer around granular drainage blankets and French drains where ground conditions are less predictable.

This grade is well suited to situations where construction traffic, angular aggregate or variable ground conditions place higher stress on the membrane during installation. For heavier commercial loading or high risk protection applications, a higher Terram grade should be considered.

Install Terram T1500 on a prepared sub grade free from sharp protrusions. Overlap adjacent rolls by a minimum of 300mm, increasing where the ground is uneven or soft. Cover promptly with aggregate to limit UV exposure and reduce the risk of installation damage.

• Performance specified non woven geotextile membrane
• Higher strength for use on soft or variable sub grades
• Fully isotropic properties for consistent performance
• Low pore size with high permeability for effective filtration
• Resists abrasion and damage during installation
• Suitable for driveways, access roads and hardstanding

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

Product grade: Terram T1500
Fabric type: Non woven, needle punched and thermally bonded
Polymer: Polypropylene
Colour: White
Tensile strength: 12.5 kN per metre
Tensile elongation: 60 percent
CBR puncture resistance: 2250 N
Cone drop: 32 mm
Water permeability: 65 litres per m² per second
Mean pore size: 65 microns
Thickness at 2kPa: 1.6 mm
Roll width: 4.5 m
Roll length: 100 m
Roll coverage: 450 m²