When considering the installation of a bunded oil tank, one important question often arises: do bunded oil tanks need a base? This question is crucial not only for homeowners but also for installers and compliance officers. A solid, level base is essential for supporting the tank’s weight and preventing potential shifting or damage over time.

In this blog, we’ll discuss why a base matters, the UK regulations around installation, and the consequences of neglecting this vital aspect.

Why a Solid, Level Base is Essential

The weight of a filled bunded oil tank can be substantial, which is why a firm and level base is necessary. Here are some reasons:

  • Support Weight – A proper base ensures the tank can withstand the pressure of stored oil.

  • Prevent Shifting – An unsteady base can cause tilting or movement, undermining the tank’s integrity.

  • Reduce Damage Risk – A stable base reduces the likelihood of structural damage and leaks.

UK Guidelines for Oil Tank Bases

For additional practical advice, many local councils publish detailed recommendations. One example is Breckland Council’s guide, which outlines risks, regulations, and best practices for domestic oil tank safety, including correct base preparation and leak prevention measures.

For more detailed guidelines, refer to our bunded oil tank guide.

Consequences of Not Using a Proper Base

Skipping a proper base can have serious outcomes:

  • Structural Failure – Without stability, tanks may crack or collapse.

  • Environmental Impact – Oil leaks can contaminate soil and water, leading to costly clean-up and potential fines.

  • Increased Maintenance Costs – Addressing problems caused by poor installation is far more expensive than doing the job correctly from the start.

  • For more information, check out what to do if your oil tank is leaking.

Choosing the Right Base Material

When selecting materials for your oil tank base, consider:

  • Durability – Materials should handle long-term outdoor exposure.

  • Levelling – A flat, stable platform reduces stress on the tank.

  • Accessibility – Choose a base that allows easy access for maintenance and inspection.

For those considering an upgrade, you can explore durable options in our bunded oil tanks collection.

Conclusion

Installing a bunded oil tank on a proper base is not just good practice—it’s essential for safety, compliance, and environmental protection. A solid, level base minimises the risk of leaks and damage, ensures long-term performance, and keeps you in line with UK regulations.

If you’re looking for a reliable oil storage solution, visit our bunded oil tank range to find high-quality options tailored to your needs. Taking the right steps now will secure your storage for years to come.

Visit our product category for high-quality options to fit your needs.

Posted on 29 August 2025 in Tips and Advice