High-performance geotextile: StrataTex™ NGT

Introducing StrataTex™ NGT, an advanced development in nonwoven geotextile technology, engineered for controlled hydraulic performance and soil retention in demanding geotechnical environments. StrataTex™ NGT is now EPD-Verified, reinforcing its commitment to sustainable and transparent environmental performance.

StrataTex™ NGT is a permeable nonwoven geotextile designed for filtration, separation, and protection within soil–structure. The material restricts migration of fine particles while letting water pass, ensuring long-term functionality of drainage and pavement systems.

StrataTex™ NGT's performance is determined by the balance between hydraulic transmissivity and soil retention (apparent opening size control), which is fundamental to preventing internal erosion and maintaining the integrity of granular layers over time. This controlled interaction between soil and geotextile plays a key role in preserving layer thickness, stiffness, and drainage capacity in engineered systems.

Manufacturing process

StrataTex™ NGT is manufactured using established nonwoven processes (like needle-punching), where fibre orientation and bonding directly influence permeability and mechanical strength

Each production stage is monitored by strict quality control protocols to ensure compliance with index and performance properties, which are essential for geosynthetic design validation. Certified testing (e.g., permittivity, AOS, tensile strength) is conducted to verify suitability for intended functions prior to deployment.

Quality Control & Testing

Where can StrataTex™ NGT be used?

Rail and road performance improvement

StrataTex™ NGT acts as a separation and filtration layer within [pavement](https://www.strataGeosyst.....

Embankment support

In [embankment construction](https://www.strataGeosystems.com/railways/embankment-and-ground-improve.....

Slope stabilisation

StrataTex™ NGT contributes to slope stability by maintaining soil structure and enabling drainage, r.....

Erosion control

Used as a protective layer, it helps prevent soil loss by restricting particle movement while permit.....

What differentiates StrataTex™ NGT?

StrataTex™ NGT is designed to achieve specific performance requirements in geotechnical applications, which is reflected in the following key features:

Wide roll widths (up to 5.8 m) minimises field seams, reducing potential weak interfaces and improving continuity of separation layers.

A wide range of mass per unit area (70–2000 GSM) allows selection based on required mechanical strength (tensile, puncture resistance) and filtration criteria (AOS, permittivity).

Polymer versatility (PP and PET) provides adaptation to varying chemical, biological, and environmental exposure conditions, including resistance to degradation.

Controlled manufacturing processes ensure consistency in index properties (mass, thickness, permeability) and performance properties, which are critical for design-by-function approaches in [geosynthetics](https://www.strataGeosystems.com/glossary/geosynthetics/)

Compliance with international standards supports predictable in-field behaviour through validated laboratory testing (hydraulic and mechanical).

StrataTex™ NGT key functions

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Separation

Prevents intermixing of dissimilar materials (e.g., subgrade and [aggregate](https://www.strataGeosystems.com/glossary/aggregates/)), maintaining structural capacity and reducing contamination-induced failure mechanisms

Benefits of StrataTex™ NGT

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Time efficiency

Wider rolls reduce the number of joints and installation effort

Success Stories

Infrastructure demands solutions that perform under pressure. See how our certified systems and expertise have delivered long- term stability in projects across the globe.

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StrataTex™ NGT quality assurance

How long does StrataTex™ NGT last?

StrataTex™ NGT is manufactured under strict quality assurance systems developed over decades of experience. Compliance with international standards and certified testing procedures ensures consistent material performance and reliability across applications.