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Underground tanks

Out of sight, out of mind

Underground tanks 

Off-grid, but not as you know it. Underground tanks are an ideal way to store your domestic LPG without losing your garden space or spoiling your great view. We take care of the installation process and our Auto Ordering service delivers your LPG according to your usage levels.  

Our Flogas customer service team can help you to understand more about underground tanks, and when one of our energy specialists visits your home, they’ll use our checklist to see if your garden is best suited to an underground tank.

Take a look at our checklist to see if this is the solution for you

Our energy specialists can help advise you with a free no-obligation site survey

Due to crane and lifting equipment restrictions the Flogas vessel can’t be sited directly underneath electrical power cables. 

Other services, such as electricity, drains or water can’t pass through the area where your tank will be buried. 


In order to make deliveries safely the Flogas driver must be able to reach the tank and maintain a line of sight to the tanker.

The delivery hose cannot be taken through a building or enclosed passageway. Access to the property is required, gateways etc should be at least 3m wide to allow the tanker to pass. 


We have a minimum depth requirement for the LPG service pipe.

The LPG service pipe needs to be laid in a trench with a minimum depth of 600mm and minimum width 300mm, all other services must be separated by 250mm from the LPG pipework. 

The backfill immediately around the tank should be pea gravel, 6mm to dust, in order to allow correct drainage. Where a site has a high water table other, additional, precautions may be required in order to prevent water accumulating in the tank turret. 


There are a few requirements after your tank has been installed.

Once your LPG tank has been installed, the land above the tank may be covered with turf or gravel. The area immediately around the Flogas tank should be kept clear of debris and vegetation. Under no circumstances should vehicle parking be allowed on top of the tank. Continuous concrete or tarmac is not acceptable as a ground level finish, as this will impact on our ability to measure the readings from the cathodic protection system protecting the vessel, and this may affect your freedom to swap LPG supplier in the future. 


Underground tank solutions

Use our contact form and a member of the team will be in touch to discuss your options.