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geomembrane & geosynthetic

Materials

Materials

Merit Lining Systems uses a range of materials which follow stringent testing procedures to ensure that all of our products are of the highest standard.

We can supply different materials for different purposes. Ranging from more cost effective materials for personal projects or short term applications to more durable materials for long term applications or specialised projects.

Click on the headings below to find out more.

The most widely used geomembrane in the world. Excellent longevity, UV resistance and chemical resistance.

HDPE is also the cheapest (per mm thickness) industrial geomembrane commercially available, therefore it should also be the first geomembrane material considered and only not used on the basis of sound technical considerations.

In practice, HDPE will be the most suitable geomembrane to be used in the majority of applications.

HDPE liners can be supplied as smooth, single sided textured and double sided textured and in white/black as well as standard black.

The lower density gives improved flexibility and elongation characteristics as a trade-off against slightly poorer UV and chemical resistance performance compound to HDPE.

LLDPE can be used for prefabricated liners that can be made and folded in our factory and then sent to site for client installation.

LLDPE is suitable for floating covers and landfill caps where greater flexibility is required.

LLDPE similar to HDPE, can be supplied as smooth, single sided textured and double sided textured and in white/black as well as standard black.

Geotextiles are industrial fabrics that can be used both below and above geomembranes for protection from damage.

While the geotextiles aren’t always needed they assist greatly in areas where good fill materials are not readily available.

GCL’s are made by sandwiching bentonite clay between two layers of geotextile. Installed properly they are an alternative to a layer of natural clay.

GCL’s are not suitable for use as a primary liner.

Their purpose is to replace natural clay in composite (clay & HDPE) lining systems.

Such composite systems are commonly used in landfills and other environmentally sensitive applications.

PVC liners were the first geomembranes available and were in widespread use until the advent of HDPE liners.

Some limited uses still occur including decorative lakes and applications requiring excellent elongation.

BGM (Bituminous Geomembrane) is a heavy-duty reinforced geomembrane that is suitable for installation in harsh environmental conditions (rough subgrades, rocks directly on the geomembrane, temperature extremes and windy installation conditions).

BGM has been produced for over 30 years and is used in mining, civil engineering and environmental protection projects around the world.

Typical applications for BGM include tailings dams, heap leach pads, dams, water canals, brine ponds, landfill and contaminated land capping, basement water proofing, gas barriers and bridge deck waterproofing. Feel free to contact us for more details and installed prices of the various BGM grades.

Polypropylene liners are not pure polypropylene but rather polypropylene blended with other materials including polyethylene.

Therefore polypropylene liner from different manufacturers can give different properties and performance.

Technical issues in recent years have restricted the use of polypropylene but reinforced polypropylene remains popular for floating covers.

Please contact us to discuss the best materials for your project.

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