KHIA headerKnow-How in Action


Belzona® Tank Base Seal Still Giving Superb Protection



Petrochemical (PETR)



Gaskets, Seals and Shims (GSS)


Customer Location:

Petrochemical Plant, UK


Application Date:



Application Situation:

Carbon Steel Fuel Storage Tank



Over the years the bitumen and sand base under this 36m diameter tank had compressed, to such an extent that the annular rim was now at least 10mm below the surrounding concrete plinth. Water was actually being captured at the rim which had dramatically increased the risk of under base corrosion. Various mastics had been tried in the past, but all failed quickly.



Belzona 3131 (WG Membrane)

Belzona 6111 (Liquid Anode)

Belzona 4131 (Magma Screed)



Carbon Steel and Concrete


Application Method:

Application was carried out in line with Belzona Know-How System Leaflet GSS-03.


Belzona Facts:

For many years this customer had recognised the long-term benefits of using the Belzona Tank Base Sealing system. After reprofiling the plinth, the Belzona Tank Base Seal was installed around the full diameter, preventing any risk of water ingress to the base. The work was inspected again in 2017 and is still in perfect condition. To date this client has protected over 50 tanks with the Belzona Tank Base Seal solution.


Photographs Description

1. Initial condition of tank.

2. Annular rim creating channel for water.

3. Tank Base Seal application in 2010.

4. Tank revisited in 2017

Case study pic one


 Case study pic two


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 Case study pic four


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