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Slimline Bunded Oil Tanks
Browse an extensive range of slimline bunded heating oil tanks from leading brands. Perfect for storing heating oil where space is at a premium, our range includes slimline tanks that range from 450-litre capacity to 2000-litre capacity in a variety of styles and designs.
Slimline Tanks For Efficient Heating Oil Storage
Looking to store oil and other liquids but struggling for space? Take a look at our collection of superior quality slimline bunded oil tanks. We carry all types of bunded oil tanks including neat, slimline options that are designed to fit into narrow spaces with ease.
Whether you’re after a standard oil tank or something specific, like a fire rated oil tank, we can help. Our range of slimline bunded oil tanks are perfectly suited for domestic and commercial use and are manufactured to strict industry standards.
Heating Oil Storage For Tight Spaces
Bunded oil tanks can sometimes be large and difficult to manoeuvre. They can take up valuable space at your property, particularly if your garden or outdoor area is on the smaller side. Our range of slimline bunded oil tanks help to address these issues with slimmer designs that can fit into narrower and awkward positions.
We offer bespoke design and manufacture of quality oil storage solutions, and we can work to your exact specifications to create what you need. All of our products are designed to be industry compliant and meet the applicable oil tank regulations and standards.
Slimline Oil Storage Solutions From Northern Tank Store
Whether you need a lightweight, slimline bunded oil tank that holds 650-litres, or a larger capacity tank for commercial use, our selection has you covered. As one of the UK’s leading manufacturers and suppliers of fuel storage, we can supply everything you need to store and use heating oil.
If you would like to know more about our bespoke manufacturing services, or if you require assistance with purchasing a product from our range, contact our experts and we’ll help you find exactly what you need.
FAQs About Slimline Bunded Oil Tanks
What makes a slimline bunded oil tank different from a standard bunded tank?
A slimline bunded oil tank has a narrower footprint than a conventional bunded model, making it suitable for tighter installations such as side passages, narrow gardens, or restricted outbuildings. It still carries the same double-wall construction with an inner tank inside an outer containment shell, meeting the same secondary containment requirements. The trade-off is typically a lower overall capacity for a given height compared with a wider tank.
Do slimline bunded oil tanks meet UK regulations?
Yes, the double-wall design satisfies the secondary containment requirements set out in the Control of Pollution (Oil Storage) Regulations for England, and equivalent rules in Scotland, Wales, and Northern Ireland. Single-skin tanks above 200 litres used for domestic heating oil must have secondary containment in most circumstances, so a bunded model keeps you compliant without the need for a separate drip tray or brick bund.
What capacity options are available for slimline bunded tanks?
Slimline bunded oil tanks are commonly available from around 450 litres up to 2,500 litres, though the exact range varies by manufacturer. If your annual oil consumption is between 1,500 and 3,000 litres, a mid-range slimline tank will typically hold enough for one or two full deliveries.
Where can I legally site a slimline bunded oil tank?
The tank must be at least 1.8 metres from any non-fire-rated building opening (such as a window or door) and at least 760 mm from a non-fire-rated boundary. Because the tank is already bunded, you do not need an additional 110% containment bund around it. Always check your local planning authority if the installation is close to a watercourse or in a flood-risk area.
Can a slimline bunded oil tank be installed indoors or inside an outbuilding?
Yes, provided the building has adequate ventilation and the installation complies with OFTEC standards, including appropriate fire separation from the boiler. A slimline profile is often chosen for internal or semi-enclosed installations where a full-width tank will not fit. An OFTEC-registered technician should carry out or inspect the installation to ensure siting meets current technical and insurance requirements.
How do I check the oil level in a slimline bunded tank?
Most slimline bunded tanks come fitted with a visual gauge or a float-operated contents indicator on the outer casing. Some models support an optional electronic or ultrasonic level monitor for remote readings. Check the gauge before ordering oil, as delivery drivers typically require a minimum void space to fill safely.
What should I do if the leak-detection alarm or indicator on the bunded tank activates?
Stop using oil from the tank and arrange an inspection as soon as possible. The alarm signals that liquid has entered the interstitial space between the inner and outer walls, meaning either the inner tank or an associated fitting is leaking. Do not attempt to drain the void yourself; an OFTEC-registered engineer can assess whether the inner tank can be repaired or needs replacing.
How long does a slimline bunded oil tank typically last?
A well-maintained polyethylene bunded tank generally has a manufacturer-stated design life of around 20 years, though actual service life depends on UV exposure, ground conditions, and how regularly fittings are inspected. Keeping the lid sealed, checking the outlet valve annually, and treating the oil with a biocide to prevent microbial contamination will all extend the working life.
Can I switch from an old single-skin tank to a slimline bunded model without changing my boiler pipework?
In most cases, yes. Slimline bunded tanks use standard outlet fittings and connection sizes, so an experienced installer can usually adapt existing copper or flexible oil-supply pipework to the new tank position. If the new tank sits lower than the old one, you may need a small pump or a gravity-feed check to maintain adequate oil flow.
