How to Choose the Right Bund Material for Chemical Storage
Choosing the right bund material is not just about cost or thickness. It is about matching the material to the chemical, the site conditions, and the way the bund will be used. Chatoyer’s collapsible bund range includes 900 GSM PVC and 1,020 GSM XR-5 geomembrane, giving buyers options for both general-purpose and more chemically demanding applications.
Why bund material matters?
Even if a bund is the right size, it can still be the wrong solution if the material is not suitable for the liquid being stored. NSW EPA describes bunding as a form of secondary containment with a raised, impermeable barrier used to retain liquids. The EPA also expects bunds to remain impermeable to the liquid stored and to be maintained so their capacity is not reduced.
In practical terms, choosing the wrong material can lead to:
early material breakdown
lower containment reliability
a bund that is physically strong but chemically unsuitable
avoidable delays, rework, or replacement costs
Compare bund materials in simple terms
Material | Best for | Simple explanation | Keep in mind |
PVC 900 GSM | Many common fuels, oils, and general spill containment jobs | A practical general-purpose option for many everyday site liquids | Always check compatibility against the exact chemical |
PVC 1370 GSM | Similar applications to PVC where extra toughness is needed | A heavier-duty PVC option for more demanding physical conditions | Thicker does not automatically mean better chemical resistance |
XR-5 1020 GSM | Harsher chemicals and tougher containment applications | The more chemically resistant option when the application is more demanding | Best choice when chemical resistance is the bigger priority |
The three checks to make before choosing material
Check the chemical
Start with the exact chemical being stored. One material will not suit every fuel, oil, acid, solvent, or blended product. Compatibility guides rate chemicals individually for a reason.
Check the site conditions
Next, consider how and where the bund will be used. UV exposure, abrasion, uneven ground, repeated deployment, and project duration can all affect which material is the better fit. Chatoyer positions collapsible bunds for temporary or permanent use across mining, oil and gas, and industrial applications, so real operating conditions matter just as much as chemical type.
Check the SDS
Finally, review the SDS if compatibility is not obvious. The SDS helps confirm the chemical being stored and supports a more accurate material recommendation. Chatoyer’s configurator includes SDS upload for this reason.
Common mistakes to avoid
Choosing by price alone
A lower-cost material can still be the wrong choice if it is not suitable for the liquid being stored.
Assuming thicker means more chemical resistance
Thickness may improve durability, but it does not make PVC suitable for every chemical. The liquid itself still determines compatibility.
Skipping SDS review
If the liquid is aggressive, blended, or used in unusual conditions, skipping the SDS increases the risk of choosing the wrong material.
Treating material choice as the whole compliance answer
Material selection is only one part of the decision. Capacity, drainage, layout, maintenance, and the relevant standard also matter. NSW EPA expects bunds to contain the liquid stored, remain impermeable, and be properly maintained.
A helpful tool for choosing the right bund material
Choosing the right bund material can be difficult when you are weighing up chemical compatibility, site conditions, bund size, and operating requirements at the same time. A practical way to reduce that uncertainty is to use a bund configurator as a support tool during the decision process.
Once you have compared PVC 900 GSM, PVC 1370 GSM, and XR-5 1020 GSM, the next step is to apply that decision to the actual storage setup. The Chatoyer bund configurator helps by bringing the key inputs together in one place. It allows you to:
- select a material option
- review bund dimensions
- consider containment requirements
- upload an SDS for compatibility review
- request a quote based on the actual application
That makes it easier to move from a general material comparison to a more informed bund specification.
Cross check with our configurator for free.
