Method for creation of a multi-walled liquid storage vessel

A method for manufacturing a multiwalled container for containing a liquid comprising the steps of:

• a. providing a shell having an inner surface and an outer surface;
• b. cleaning said shell to create a suitable substrate for application of a primer layer;
• c. applying treatment to said inner surface of said shell to create an improved surface profile;
• d. applying a primer to said inner surface;
• e. applying a thermal insulation layer to said primer;
• f. applying a first polymer layer to said insulation layer to form a first outer wall;
• g. applying a first, permeable, non-absorbing material to said first, outer wall to form an interstitial space wherein said interstitial space is compartmentalized by leaving a gap between adjacent sections of said first, permeable, non-absorbing material to allow for quicker and easier detection of spills or leaks;
• h. applying a second polymer layer to said first, permeable, non-absorbing material which is in direct contact with the first polymer layer in gaps between the sections of the first, permeable, non-absorbing material, to form a first inner wall.