Terram 4000 is a high-performance, heavy-duty geotextile designed for separation, filtration, and reinforcement in demanding civil engineering and construction applications. Manufactured from UV-stabilised polypropylene, this needle-punched, non-woven geotextile ensures long-lasting ground stability and durability. It is ideal for use beneath access roads, car parks, and in areas where drainage and filtration are crucial.
Features & Benefits
Separation & Filtration: Prevents mixing of sub-base and subgrade materials
High Strength & Durability: Withstands installation and load stresses
Excellent Puncture Resistance: Protects sublayers and membranes
Permeable to Water: Allows water flow while retaining fine soil particles
UV Stabilised: Suitable for temporary exposure to sunlight during installation
Applications
Road and highway construction
Car parks and access roads
Rail track construction
Hard landscaping projects
SuDS and drainage systems
Erosion control and slope protection
Typical Roll Size
4.5m x 100m
Why Order from Green-tech
Stocked in large quantities for quick delivery
Contractor-grade products trusted for over 25 years
Full technical data and advice available
Competitive prices for bulk orders
Nationwide delivery and support Please Note:
This product is dispatched directly from our trusted supplier’s warehouse. While we aim to keep product availability as accurate as possible, we do not have live stock control for these items. Availability is subject to change, and delivery can take up to 15 working days, depending on stock levels at the time of order.
Tracking information will be provided where available, but please note this is dependent on the supplier’s shipping process. If you have any questions about lead times or delivery, our team is happy to help before you place your order.

Property Unit Value
Tensile Strength (EN ISO 10319) kN/m 22.0 (−2.2)
Tensile Elongation % 60 (±20)
CBR Puncture Resistance (EN ISO 12236) N 4300 (−430)
Cone Drop (EN ISO 13433) mm 22 (+4)
Pore Size - Mean AOS (EN ISO 12956) µm 60 (±20)
Permeability (H50) (EN ISO 11058) l/m²/s 30 (−9)