Case Study

Case Study – Biofoul Protection for Energy Industry


Leading energy company, UK.

Application Date

November, 2021.

Scope of work

Refurbishment of two jetty intake screens which had been in service for approximately 12 years and had suffered mechanical damage. The client had also welded on new lifting points which required protection and coating repair. They had previously needed to take out the screens and manually remove the marine growth which restricted the water flow in to the cooling system, reducing the efficiency of the condenser, which could impact the power generated from the station.


Corroglass 600.

Biofoul: Non-toxic. 


Coating system

  • Screens flash blasted to reveal true extent of damage and in turn the repair required.
  • Surface preparation and cleaning of the carbon steel substrate and lifting lug area.
  • Corroglass 600 Series used to achieve a minimum DFT of 900 microns, with appropriate thickness and spark tests completed, following adequate cure.
  • Biofoul applied via airless spray, as a topcoat to achieve a minimum DFT of 300 microns.

Coating credentials

Corroglass Series: A two-pack cold cured vinyl ester glass flake coating. Provides excellent performance in immersed environments. Excellent flexibility, undercutting resistance and sliding abrasion resistance.

Biofoul: A three pack, cold-cured polyester containing metallic (inorganic) copper flakes. Selected due to its long term fouling resistance and will resist velocities of up to 25m/s. The coating contains metallic copper and no fillers which are classified as toxic, such as TBT and come copper salt materials.

It has been found to be non-toxic in salt and fresh water, and is certified as TBT free by Lloyds Register.


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