GEO-Fabrics-COL-Logo-155x45.png (1)


Once a landfill cell has been filled with waste it needs to be capped with a final cover system that keeps out liquid infiltration and provides effective management of gasses.

Final Cover Systems in Landfill

The standard components within a final cover system
  • An erosion control layer (top soil)
  • A protection layer
  • A drainage layer
  • A barrier layer
  • A gas venting layer
  • A foundation layer


Design practices vary from site to site and as a result of national regulation and local conditions. State of the art design in landfill engineering has evolved from the use of natural soils to factory manufactured geosynthetics which allow for improvements in safety, reduced environmental impact and economic savings.

Combined protection and drainage can be achieved using GEOfabrics GPT composites, manufactured from 100% prime grade virgin polymer offering proven durability. GPT composites can also be used below a capping membrane to provide an effective pathway for control and extraction of landfill gasses.

GPT composites have been designed to provide a combination of membrane protection and drainage, offering a robust passage for both liquids and gasses.

Manufactured from GEOfabrics HPS geotextiles, with proven performance in the protection of geomembranes and synthetic prefabricated strip drains at 0.5 or 1m. The strip drains are manufactured from 100% prime grade virgin polypropylene with run channels along the whole length on both the upper and lower surface.

The drainage core is surrounded by a strong durable filter that combines high permeability with an excellent impassable soil barrier (only 100% virgin polymer is a guarantee of product durability).


  • Guaranteed drainage performance – even with large deformation and soil pressure
  • Excellent durability – guaranteed as 100% prime grade virgin polymer
  • Meets all Environment Agency requirements for drainage composites
  • Tested to 100 years durability to all EN standards
  • Manufactured from HPS Geotextiles with prove performance in membrane protection
  • Excellent interface friction properties

Discover how GEOfabrics can help you
Contact us for more information and assistance.

View Related Sectors
& Solutions

See how GEOfabrics can help you in other areas

Liner Protection & Drainage Composites

Liner Protection with Nonwovens

Filtration above the drainage blanket


Side Slope Drainage

View Related

View products related to this sector

GPT Range

HPS Range

Case Studies

Geotextiles for Coastal Protection – HPS14C Case Study

GEOfabrics HPS14C has been successfully installed below the rock armour at Withernsea. Nearly 70,000 t...

Urban Greening Project – Rome

Municipio Roma VII is the most heavily populated Municipio in the Italian Capital with more than 300,0...

Residential Root Protection – CuTex Case Study

As part of a wider contract PBA Solutions were responsible for the design and installation of a tree r...

Old Colwyn Case Study – HPS17C Coastal Protection

Geofabrics HPS17C has been successfully installed below the rock armour on Old Colwyn Promenade Coasta...

Rock Armour Geotextile Filters – A19 Case Study

On 18th February 2020, the A19 was closed between Chapel Haddlesey and Eggborough, due to collapse fol...

GEOfabrics Laboratory – UKAS Accreditation

Our onsite laboratory is accredited by UKAS to ISO 17025:2015 for the competence in testing to several...

View our Technical Hub

Industry News

ISO 14001 & 9001 Certification

GEOfabrics certified to ISO9001 and ISO14001

Flood and Coast Telford

Future Landscape and Playspaces 2023

Recent Tech Papers

Root Barriers Comparison Report

Geocomposite to Prevent Pumping Failure

CuTex Root Barrier Effectiveness Report

Development of Geocomposite to Prevent Mud Pumping

Geocomposite Material In Landfill Containment

Geosynthetics in Coastal Engineering Protection

Difficulties with Unit Weight

Designing with the Cylinder Test

Recent Downloads

Installation Guides & Certificates

ISO 14001 & 9001 Certificate

Case Studies

Culemborg Geldermalson Rail Inspection Pad—RK12 Drainage Geocomposite

Design Information

LFX Stone Selector Guidance

Design Information

Cylinder testing geomembranes and their protective materials: LFE2

TrackTex Anti-Pumping Geocomposite

TrackTex G Dual DoP No112-2022-02-21

TrackTex Anti-Pumping Geocomposite

TrackTex Dual DoP No043-2022-02-21

Design Information

Introduction to Geosynthetics

Rail Rig Laboratory Test

Other Sectors

GEOfabrics cover a wide range of sectors.

Root barriers


The construction industry is under ever increasing legislative and commercial pressure which require innovative appro...

General Civils

The use of geosynthetics in civil engineering applications has continued to grow exponentially over the last two deca...


The design of an engineered waste containment system is considered a continuous project, including all operational ac...

Coastal & River Defence

Marine erosion can occur when the sea is energised by wind and gravity to produce waves, tides, and currents: it is c...


Geosynthetics have been employed to perform a number of functions in track construction and rehabilitation for almost...
Discover how GEOfabrics can help you today
Contact us for more information and assistance.