Geonet & Composite Drainage Net
HDPE geonet and geocomposite drainage net for gas and liquid drainage in landfills, tunnels, retaining walls and green roofs.
Indicative Price Range
USD 0.90 - 2.40 / m²
Indicative factory range per m2. Final price depends on thickness or unit weight, roll width and order volume. Send us your specification and we will return a firm factory-direct quote within 24 hours.
Product Description
Our geonet is extruded from HDPE into a three-dimensional mesh of intersecting ribs, creating continuous drainage channels in both directions along the plane of the roll. The structure keeps its shape under high normal loads, so it maintains flow capacity where granular drainage aggregate would be compressed or would consume too much space.
It is supplied as a plain geonet or as a geocomposite — a geonet thermally bonded to one or two layers of nonwoven geotextile. The geotextile acts as a filter and protects the drainage channels from clogging with soil fines, so a single roll replaces the traditional combination of aggregate, filter fabric and separator.
We produce geonet and geocomposite drainage net in custom roll dimensions and core thicknesses to suit the required flow rate and compressive load — send us your design parameters and we will recommend a suitable structure.
Key Features
- Tri-planar HDPE structure with high in-plane flow capacity
- Keeps drain channels open under high compressive loads
- Available plain, or composite with one or two nonwoven geotextile layers
- Geotextile filter prevents soil fines from clogging the drainage path
- Replaces thick granular drainage layers — saves excavation and transport
- Flexible rolls conform to uneven surfaces and install quickly
Applications
- •Landfill leachate and gas collection layers
- •Tunnel and basement wall drainage
- •Retaining wall and bridge abutment drainage
- •Green roof drainage and drainage under sports surfaces
- •Highway edge drains and slope drainage
Technical Specifications
- Material
- HDPE
- Structure
- Tri-planar / bi-planar geonet, optional geotextile lamination
- Roll Width
- Customizable
- Roll Length
- Customizable
Related Technical Articles
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Specify a geocomposite drainage net correctly: match the HDPE geonet core, filter fabric AOS and permittivity to your soil, with tables and design checks.
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What AOS, permittivity and CBR a drainage trench wrap needs, how much fabric 400 m of trench eats, and how to read a non woven geotextile China quote.
Geotextile for Landfill Liner Protection: Design Guide
How to specify nonwoven geotextile for landfill liner protection: mass per area, puncture resistance and interface friction values that keep HDPE intact.