3500 Litre Bunded Oil Tanks

Yes, but it is typically reserved for very large country estates, manor houses, or properties with multiple dwellings connected to a single heating system. Because it exceeds the 2,500-litre threshold, this tank must be bunded (double-skinned) by law for all domestic, commercial, and agricultural installations in the UK.

The primary benefit is the ability to purchase fuel in significant bulk, which often yields the lowest possible price per litre. It also provides exceptional energy security for remote properties that may be inaccessible to delivery tankers during long, harsh winters, ensuring a consistent supply for several months.

A 3500 litre tank filled with kerosene weighs approximately 3.2 to 3.5 tonnes. Due to this extreme weight, the installation must be on a professionally engineered, reinforced concrete base (minimum 150mm thick) to prevent the ground from subsiding and the tank from becoming unstable.

Tanks of this size are available in both vertical and horizontal formats. Horizontal models are often preferred for their stability and lower profile, which can be easier to screen with landscaping. You should expect a length of approximately 2.5 to 3 metres for a horizontal 3500L model.

Yes. Plastic 3500L tanks are popular for their corrosion resistance and lighter empty weight during installation. However, 3500L steel bunded tanks are frequently chosen for high-security sites or commercial yards where extra protection against impact and fuel theft is a priority.

At this capacity, the tank is subject to strict environmental regulations. It must be bunded to hold 110% of the inner tank's capacity. Additionally, for commercial sites, the installation may require an overfill prevention valve and a permanent leak detection system to comply with Oil Storage Regulations.

The Tank Shop stocks 3500 litre models from industry leaders such as Kingspan Titan, Tuffa, and Harlequin. These manufacturers specialize in high-capacity storage and provide the necessary certification and robust warranties required for large-scale fuel storage.

Because of the high value of the fuel stored, we recommend advanced remote monitoring. Most 3500L tanks are compatible with the Watchman Sonic or Apollo Ultrasonic gauges, and for commercial users, we offer telemetry systems that can send low-level alerts directly to your phone or office computer.