Introduction
Typically the first question you ask when working on any containment or lining application is, how much does geomembrane cost per square meter? And you will never get a final answer. It depends on the type of material, its thickness, whether it has smooth or textured surface and is, quite simply, influenced by the detailed requirements of the project.
Widely used as impermeable liners from landfills to ponds, mining, and water storage, geomembranes have the critical function of preventing leakage and/or the pollution of soil and groundwater through their inherent design and sustainable approach. But it is essential to note that, whilst costs are extremely important on their own, pricing ‘per square meter’ can be very misleading in isolation from consideration of durability and performance.
Key explanation
As in most instances, on any project the price of a geomembrane is calculated on a per square meter basis, although, of course, many technical considerations influence the final figure.
Price per square meter is heavily dependent on material type. Thus, in general, HDPE geomembranes are more rigid and chemically resistant, and therefore able to meet the drainage requirements of many more demanding environments such as landfills and mining projects. On the other hand, a typical LLDPE geomembrane, while still strong, features greater flexibility and is used on many projects on account of its easier ability to handle uneven surfaces as a result of installation.
Thickness is also a major consideration. Common thicknesses for geomembranes range from 0.5 mm to 2.0 mm or more. Thicker liners will have greater resistance to puncture and longer life, but necessarily higher prices for material and transport, etc.
Type of surface also matters. Smooth geomembranes are more economical, whereas textured variants take longer to manufacture and are therefore more expensive. However, their textured nature does provide for better friction and slope stability.
Price Per Square Meter
Pricing for geomembrane products is inversely proportional to order volume, i.e., the more you buy, the cheaper the per square meter price tends to go. However, the cost of geomembranes depends on a number of factors, including:
Materials
Basic raw geomembranes are usually based on polymer materials such as HDPE or LLDPE. These will normally be the cheapest, but as the material becomes more complex and specialist, prices tend to rise.
Thickness
Thicker products usually cost more, simply because of the extra raw material. However, this weight saving could well offset any price advantage if you have a massive project.
Standards and certification
As per ASTM standards for geomembrane products. Certified products may be a little more expensive, but their quality and properties should be consistent with the standards you choose.
In reality, geomembrane average price per square meter represents a balance between specification and value for money over the long term, rather than merely reflecting cost.
Applications / Use Cases
Let’s take a look at some common uses and applications.
Landfill liners
Keep leachate in, away from the earth. Relatively high tension materials such as HDPE geomembrane is usually called for.
Mining operations
As part of heap leach pads, put at risk by aggressive chemicals in leach solution.
Aquaculture
Used in shrimp and fish farming ponds for a clean environment. Less injury to sensitive aquatic beings, reducing losses from exposure, premature death, disease and infection.
Water reservoirs
And even dams, lining and providing a barrier between the water/irrigation source, and earth.
Biogas digesters
A cover or liner, containing gas and liquids generated by organic activity.
Root barriers
Hoping to keep the ground safe from outside infection.
Comparison or Benefits
Here are reasons why you’re opting for geomembrane instead of traditional lining methods.
Assured impermeability
Where compacted clay may not always keep its promise, this kind of material provides zero permeable boundary layer.
Cost efficiency
As mentioned, considering the geomembrane price per m2 will concern you in the context of longer terms, the saving comes, knowing that you don’t need maintenance or replacing in the near future!
Fast installation
The relatively high weight of large panels makes it easy to weld sections together on-site and deliver them from the truck. Compared to installations in concrete blocks and panels, large format HDPE and similar geomembrane installations are fast.
As a result of different installation techniques and panel sizes, geomembranes can be installed significantly faster than that of more traditional systems.
Chemical and UV resistant
If all geomembranes are produced to a high standard, the final product is resistant to UV light, sunlight, harsh chemicals, acids, bacteria and other biologically active matter. Some geomembranes are unsuitable for aggressive chemicals, while LLDPE, HDPE and other materials are fine for most applications.
Adaptability
You can use geomembranes in any kind of weather or terrain, and in many different projects.
How to Choose / Buy
Assuming you want to purchase, and not just compare geomembrane prices against one another, note it’s not just about price.
You’ll want to consider starting from application requirements. Landfills and mining projects usually call for a heavier panel of HDPE. Other uses, ponds and agriculture for example, may benefit from the light, flexible LLDPE geomembranes.
A note on “thickness selected carefully”. The benefit of a thinner geomembrane is evident, yes, but thin liner installations can become very expensive.
Surface type matters. For example, a textured geomembrane installed on a slope will provide better traction if the surface is roughened, or at least if texture is applied to the product. Smooth geomembranes are better suited, naturally to flat surfaces.
Quality as noted in the first point is paramount! If the geomembrane meets ASTM or similar standards, you’re more sure of product base quality, as some manufacturers take cheap shortcuts and yield an inconsistent liner that is difficult to use, and is less reliable overall.
Go for the supplier capabilities. The geomembrane manufacturer should be able to deliver, instruct with technical support and proper quality and reliability.
Finally, keep the price per square meter point in view.
Not just price of geomembrane product, but points like. Transportation costs, and if there are very specific installation “welding” cost considerations. A modestly higher price per square on the geomembrane itself may lead to far superior pricing on the project overall.
FAQ
What is geomembrane?
A geomembrane is an artificial barrier made of very low permeability material employed to control the migration of fluids in the ground.
How does it work?
It acts as an isolated barrier layer against water, for example, or pass gases entirely through from the far side of the liner to the other side. In that manner it protects water and soil as helping the engineered product.
Cost or life?
Life and on to longevity. A geomembrane will cost “X” dollars. Or whatever currency or at what price again. Note the price per square meter to gauge the best panel.
Best option?
Best Catch, depends on your project. Perhaps you will need quality HDPE, a good thickness. Perhaps Chinachem, carbon high density polyestrene. “Oh”.
There are some issues. Sure, geomembranes tend to have a good lifespan, but often Fail in seams! And by poor install.
What shall you do?
Well, a better barge and geo.yg.
Then one problem, “Gee, what I really want, no problem!” “Constructions? They’re neat!”And why, Again, install right and with good geomembrane help in what you’re dialing up.