White geotextile membrane laid out on grass

CORE GEOSYNTHETICS.

Membranes and geogrids for separation, filtration and reinforcement.

CORE GEOSYNTHETICS
Membranes & Geogrid.

Start with what the layer needs to do. Our range of woven and nonwoven geotextile membranes and biaxial geogrids supports everything from garden paths and driveways to larger groundworks.

Geotextiles keep materials separated while allowing water to pass through. Geogrids interlock with suitable aggregate to reinforce the granular layer. Each has a different job in the build-up.

Separation

Keep the sub-base and underlying soil apart to help maintain the designed build-up.

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Filtration

Allow water to pass while retaining soil particles. Select the membrane to suit the ground and drainage requirements.

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Reinforcement

Use aggregate interlock to restrict lateral movement within a designed granular layer.

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Find the right membrane for the job.

From compact rolls to full-roll groundworks, explore the geotextiles available across CORE.

Showing all 6 geotextiles

CORE TerraTrack Lite

Nonwoven geotextile

A manageable roll for smaller jobs. Separation and filtration beneath driveways, paths and hardstandings.

Product details

CORE TerraTrack Pro

Nonwoven geotextile

A robust nonwoven option for protection, separation and filtration where the project calls for higher performance.

Product details

CORE MultiTrack 700

Nonwoven geotextile

Full-roll separation and filtration for general groundworks, drainage and landscape construction.

Product details

CORE MultiTrack 1000

Nonwoven geotextile

A robust separation layer beneath driveways, pathways and hardstandings, with filtration for drainage applications.

Product details

CORE FasTrack 609A

Woven geotextile

A black woven membrane for separation beneath sub-bases and hardstandings. The FasTrack 609 range also provides a weed barrier beneath bark and planted areas.

Product details

CORE FasTrack Orange

Woven geotextile

A high-visibility woven geotextile for separation and a clearly identifiable layer within the ground build-up.

Product details

Woven or nonwoven?

Nonwoven membranes are commonly selected for separation, filtration and protection. Woven membranes provide separation with tensile strength. Both can be permeable: match the opening size, water flow and strength to the job.

CORE BIAX
Biaxial Geogrid.

Reinforcement for granular sub-bases, capping layers, roads and working platforms, including construction over weaker ground.

The open grid allows compatible aggregate to interlock, restricting sideways movement and helping the layer distribute loads. CORE BIAX provides reinforcement in two directions.

A reinforced design can reduce the amount of aggregate needed, but any reduction in sub-base depth must be established for the actual ground, traffic and loading.

Discuss your project

Black biaxial geogrid roll showing the open grid structure

2D reinforcement. A stronger foundation.

CORE BIAX is a flat, open grid laid within the granular build-up. “Biaxial” means it provides tensile strength in two directions: along the roll and across it.

As compatible angular aggregate is compacted, particles engage with the grid apertures. This interlock restrains sideways movement and helps the reinforced layer spread loads, reducing deformation under repeated traffic.

The grid works with the aggregate. It is buried beneath the finished surface, rather than used as an exposed driving surface.

Illustration showing flat geogrid layers within aggregate above a geotextile and the ground — Illustration only. The number and position of layers, membrane requirement and construction depths depend on the project design.

Where can you use CORE BIAX?

Access roads & haul routes

Reinforce granular layers beneath temporary construction access and permanent access roads on weak or variable ground.

Car parks & hardstandings

Support the sub-base beneath parking areas, storage yards and other surfaces exposed to repeated vehicle movements.

Working platforms

Form part of a designed granular platform for construction activity. Plant loads and ground conditions must inform the specification.

Driveways & paved areas

Add reinforcement beneath the surface where the ground conditions and expected traffic call for it.

Choose your CORE BIAX grade.

Start with the ground, the loading and the proposed build-up. Compare the declared strengths below, then confirm the specification for your project.

CORE BIAX 20

20 kN/m

Declared tensile strength in both machine and cross directions.

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CORE BIAX 30

30 kN/m

Declared tensile strength in both machine and cross directions.

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CORE BIAX 40

40 kN/m

Declared tensile strength in both machine and cross directions.

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The grade number is a tensile-strength designation, not a vehicle load rating. Select the grade, aggregate and layer thickness as part of the project design.

Geogrid, geotextile or geocell?

Different jobs within the same ground build-up.

Biaxial geogrid

A flat reinforcement grid. Aggregate interlocks with its openings to help restrain lateral movement.

Geotextile membrane

A permeable fabric selected for separation and filtration. It may be used alongside BIAX to prevent soil and aggregate mixing.

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Geocell

A three-dimensional cellular structure that contains infill. It has a different role from a flat geogrid and is selected as part of the complete system.

Installing CORE BIAX.

Plan the layer position, overlaps, aggregate and compaction before starting. Follow the current product guidance and approved project detail.

Open the installation guide

Prepare the formation.Remove obstructions and install a separation membrane where specified.
Roll out the grid.Lay flat at the specified level and orientation, maintaining the designed overlaps.
Place the aggregate.Use the specified material and cover. Do not drive directly on exposed geogrid.
Compact and inspect.Work in controlled layers, checking the grid has not moved or been damaged.

Your CORE BIAX questions.

Can BIAX reduce the amount of aggregate I need?

It can support a more efficient reinforced design. A reduction in excavation or aggregate depth must be calculated for the ground, loading, aggregate and grid properties. There is no universal percentage saving.

Is a higher grade always the right choice?

No. Tensile strength is one input. Formation strength, traffic, aggregate compatibility and the designed layer thickness also matter. The 20, 30 and 40 designations are not vehicle weight limits.

What information helps you advise on a project?

Share the intended use, vehicle or plant loading, ground investigation or CBR information if available, proposed aggregate and construction depths, area and any drawings. We can help identify the product options and any further design information needed.

Why choose CORE GEOSYNTHETICS?

Effective drainage, filtration, separation and structural reinforcement provide versatile support for roads, erosion control, drainage systems and everyday landscaping.

Keep layers working together. Reduce mixing between soil and aggregate with a correctly selected separation layer.
Support water movement. Choose filtration properties to suit the soil and drainage detail.
Make materials go further. Reinforcement can improve the efficiency of a designed build-up.
Choose a practical format. Match the roll and grade to the project, with CORE support when you need it.

Resources.

Product information, installation guidance and technical specifications.

Order through CORE TRADE.

Browse our online geosynthetics range, or speak to us about the grade and quantity your project needs.

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White nonwoven membrane Black woven membrane - FasTrack 609 CORE BIAX 20 TRP 10 Membrane TRP 30 Membrane

CORE GEOSYNTHETICS.